The quadratic equation in factored form: f(x) = 0. 5(x+3)(x-7) have a minimum point. The minimum value of the function is -11.
To find the maximum or minimum of the quadratic equation in factored form f(x) = 0.5(x+3)(x-7), we need to convert it to standard form by expanding the terms:
f(x) = 0.5(x² - 4x - 21)
f(x) = 0.5x² - 2x - 10.5
The coefficient of x² is positive, so the parabola opens upwards and we have a minimum point.
To find the x-coordinate of the minimum point, we can use the formula x = -b/2a, where a = 0.5 and b = -2:
x = -(-2)/2(0.5) = 2
So the minimum point is at x = 2. To find the y-coordinate, we can substitute x = 2 into the equation:
f(2) = 0.5(2)^2 - 2(2) - 10.5 = -11
Therefore, the minimum value of the function is -11.
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two cards are drawn from a deck of 52 playing cards. the first card is not replace before the 2nd card is drawn. what is the probabilty of drawing a king and another king?
A. 3/676
B. 1/221
C. 1/169
D. 2/169
Answer:
1/221.
Step-by-step explanation:
Probability(first card is a King) = 4/52 = 1/13 (as there are 4 kings in the pack).
Now there are 51 cards left in the pack, 3 of which are Kings, so:
Probability(second card is a King) = 3/51 = 1/17.
These 2 events are independent so we multiply the probabilities:
Required probability =
1/13 * 1/17
= 1/221.
what’s the inverse of f(x) for f(x)=4x-3/7
Answer:
x/4 + 3/28 = y
Step-by-step explanation:
To find the inverse, switch the x's and y's (note that f(x) is y) and solve for y:
x = 4y - 3/7
x + 3/7 = 4y
x/4 + 3/28 = y
Answer:
−1(x) = 3√2(x+7) 2 f - 1 (x) = 2 (x + 7) 3 2 is the inverse of f (x) = 4x3 − 7 f (x) = 4 x 3 - 7.
A method for determining whether a critical point is a relative minimum or maximum using concavity.
To determine whether a critical point is a relative minimum or maximum using concavity, we need to examine the second derivative of the function at the critical point.
If the second derivative is positive, then the function is concave up, meaning it is shaped like a bowl opening upwards. At a critical point where the first derivative is zero, this indicates a relative minimum, as the function is increasing on either side of the critical point.
On the other hand, if the second derivative is negative, then the function is concave down, meaning it is shaped like a bowl opening downwards. At a critical point where the first derivative is zero, this indicates a relative maximum, as the function is decreasing on either side of the critical point.
If the second derivative is zero, then the test is inconclusive and further analysis is needed, such as examining higher order derivatives or using other methods such as the first derivative test.
Therefore, the concavity test is a useful method for determining the nature of critical points and whether they represent a relative minimum or maximum.
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Complete question is:
What we need to examine for a method for determining whether a critical point is a relative minimum or maximum using concavity.
Austin spends a winter day recording the temperature once every three hours for science class. At 9 am, the temperature was -1.9°F. Between 9am and noon, the temperature rose 11.3°F. Between noon and 3pm, the temperature dropped 7.9°F. Between 3pm and 6pm, the temperature dropped 12.7°F. What was the temperature at 6pm?
To find the temperature at 6pm, we need to start with the temperature at 9am and then add or subtract the changes in temperature that occurred during the day.
We know that the temperature at 9am was -1.9°F. Between 9am and noon, the temperature rose 11.3°F, so at noon the temperature was:
-1.9 + 11.3 = 9.4°F
Between noon and 3pm, the temperature dropped 7.9°F, so at 3pm the temperature was:
9.4 - 7.9 = 1.5°F
Between 3pm and 6pm, the temperature dropped 12.7°F, so at 6pm the temperature was:
1.5 - 12.7 = -11.2°F
Therefore, the temperature at 6pm was -11.2°F.
In △def, d = 20, e = 25, and f = 30. find m∠f to the nearest degree.
m∠f to the nearest degree is 83°.
The Law of Cosines is used to find an angle when all triangle sides are known.
f² = d² +e² -2de cos(F)
To find angle ∠F, we need to find the value of cos(∠F), which we can do by rearranging the Law of Cosines as follows:
cos(F) = (d² +e² -f²) / (2de)
cos(F) = (20² + 25² - 30²) / (2 × 20 × 25)
cos(F) = (400 + 625 - 900) / (1000)
cos(F) = 125/1000
∠F = arccos(1/8)
∠F = 82.8°
Rounding to the nearest degree
∠F = 83°
Hence, m∠f to the nearest degree is 83°.
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Select all the tables that show quadratic functions.
(select all that apply.)
To select all the tables that show quadratic functions, look for tables with a second-degree polynomial equation in the form of "y = ax² + bx + c".
Which of the following tables display a quadratic function in the form of "y = ax² + bx + c"?Tables that show quadratic functions:
(a).
x y
-2 8
-1 3
0 0
1 1
2 4
This table shows a quadratic function in the form of y = x² - 2x.
(b)
x y
-3 0
-2 1
-1 4
0 9
1 16
2 25
3 36
This table shows a quadratic function in the form of y = x².
A quadratic function is a second-degree polynomial function that can be expressed in the general form of "y = ax² + bx + c", where a, b, and c are constants.
In this form, the variable "x" is squared, and the coefficient "a" determines whether the parabola opens upward or downward.
To identify tables that show quadratic functions, we need to look for tables that display data points that follow a quadratic pattern.
That is, the dependent variable (y) changes in a way that corresponds to a quadratic equation.
In the first table, the values of y correspond to the quadratic equation y = x² - 2x. The second table shows a set of data points that corresponds to the quadratic function y = x².
Therefore, these two tables show quadratic functions.
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Find f(a) if y = f(a) satisfies
dy/dx = 24yx³
and the y-intercept of the curve y = f(2) is 5. f(x) = ...
The solution to the differential equation is f(a) = 1/√(12a⁴/125 - 769/5000).
How to find the derivative of given equation?To find f(a), we need to solve the differential equation:
dy/dx = 24yx³
Separating variables, we get:
dy/y³ = 24x³ dx
Integrating both sides, we get:
-1/(2y²) = 6x⁴ + C
where C is the constant of integration.
To find the value of C, we use the fact that the y-intercept of the curve y = f(2) is 5. This means that when x = 2, y = 5. Substituting these values into the equation above, we get:
-1/(2(5)²) = 6(2)⁴ + C
Simplifying and solving for C, we get:
C = -1/(2(5)²) - 6(2)⁴
C = -769/125
So the solution to the differential equation is:
-1/(2y²) = 6x⁴ - 769/125
Solving for y, we get:
y = 1/√(12x⁴/125 - 769/5000)
Therefore, f(a) = 1/√(12a⁴/125 - 769/5000).
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Patricia bought 4 apples and 9 bananas for $12. 70. Jose bought 8 apples and 11 bananas for $17. 70 at the same grocery store. What's the price of one apple?
The price of one apple is $0.70, obtained by solving the system of equations 4x + 9y = 12.70 and 8x + 11y = 17.70 using elimination.
How much would Patricia pay for each apples?Let's use a system of equations caculation the problem.
Let x be the price of one apple and y be the price of one banana.
From the first sentence, we know that:
4x + 9y = 12.70
From the second sentence, we know that:
8x + 11y = 17.70
Now we can solve for x by using either substitution or elimination.
Let's use elimination.
We can multiply the first equation by 11 and the second equation by -9, then add them together:
44x + 99y = 139.70
-72x - 99y = -159.30
-28x = -19.60
Dividing both sides by -28, we get:
x = 0.70
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1. Jason draws a rectangle in the coordinate plane at the right to represent his yard. To get from one corner of his yard to another, Jason travels 4 units down and then 6 units right. Draw arrows on the coordinate plane to show Jason’s path. Write the coordinates for his start and end points.
START:___ END:___
2. Use the coordinate plane in problem 1. What is the perimeter of rectangle YARD?
units
3. Mary models her rectangular room in the coordinate plane at the right. She plans to hang strings of lights on two perpendicular walls. What are the lengths of and ?
units units
4. Use the coordinate plane in problem 3. What is the area of Mary’s room?
square units
5. The coordinate plane at the right models the streets
of a city. The points A(3, 8), B(6, 3), and C(3, 3) are connected to form a park in the shape of a triangle. Connect the points to form the triangle. Which two sides of the park form a right angle?
and
6. Use the coordinate plane in problem 5. Tyler walks along the two sides of the park that form the right angle. How many blocks does he walk in all?
blocks
7. How can you find distances between points in a coordinate plane?
1. The coordinates are: START: (0,0) END: (6,-4), 2. The perimeter of rectangle YARD is 20 units,3. The lengths of YX and YZ are 4 units and 6 units, respectively, 4. The area of Mary's room is 24 square units,
1-To get from one corner of his yard to another, Jason travels 4 units down and then 6 units right. Starting from the origin, his starting point is (0,0). From there, he moves 4 units down to the point (0,-4), and then 6 units right to reach his endpoint, which is at (6,-4).
2-The rectangle has two sides of length 4 and two sides of length 6. The perimeter is the sum of the lengths of all sides, so it is equal to 2(4) + 2(6) = 8 + 12 = 20 units.
3-The coordinates of points Y, X, and Z are not given, so we cannot calculate the lengths directly. However, we know that the sides of a rectangle are perpendicular, so we can use the Pythagorean theorem to find the lengths. Let Y be the origin (0,0), and let X be the point (0, -4). Then YX has length 4 units. Similarly, let Z be the point (6, 0), so YZ has length 6 units.
4.To find the area of a rectangle, we can multiply the lengths of its sides. From problem 3, we know that the lengths of the sides are 4 and 6 units, so the area is 4 x 6 = 24 square units.
5. The sides AB and AC form a right angle.
To determine which sides of the triangle form a right angle, we need to find the slope of each side. The slope of AB is (3-8)/(6-3) = -5/3, and the slope of AC is (3-3)/(6-3) = 0. Since the product of the slopes of two perpendicular lines is -1, we can see that AB is perpendicular to AC. Therefore, sides AB and AC form a right angle.
6. Tyler walks 9 blocks in all.
To find the distance Tyler walks, we need to calculate the length of sides AB and AC. Using the distance formula, we can find that the length of AB is sqrt[(6-3)² + (3-8)²] =√[(34) units, and the length of AC is 3 units. Therefore, Tyler walks 3 + √[34 units along the two sides that form the right angle. This is approximately 9.4 blocks, so he walks 9 blocks in all.
7. The distance between two points in a coordinate plane can be found using the distance formula:
d = √[(x₂-x₁)² + (y₂-y₁)²]
where (x₁, y₁) and (x₂, y₂) are the coordinates of the two points, and d is the distance between them. The formula is derived from the Pythagorean theorem, which relates the sides of a right triangle.
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Carla, the baker, worked for 5 hours to make cookies..
She ended with 380 cookies altogether. Write an
equation to express how many cookies Carla made
each hour.
Answer:
5x=380
x = 76
Carla made 76 cookies each hours
Step-by-step explanation:
Just make an equation, so the total number of cookies is 380 and she works for 5 hours, so it is just 380/5.
Dina has a mass of 50 kilograms and is waiting at the top of a ski slope that’s 5 meters high. the maximum kinetic energy she can reach when she skis to the bottom of the slope is joules. use pe = m × g × h and g = 9.8 m/s2. ignore air resistance and friction.
Dina can reach a maximum kinetic energy of 2450 Joules when she skis to the bottom of the slope.
How much kinetic energy can Dina reach?Potential energy (PE) = m x g x h
where m = mass, g = acceleration due to gravity, and h = height
Here, Dina's mass (m) = 50 kg, height (h) = 5 m, and acceleration due to gravity (g) = 9.8 m/s².
So, PE = 50 x 9.8 x 5
PE = 2450 Joules
When Dina skis down the slope, all of her potential energy will be converted into kinetic energy (KE) at the bottom of the slope, neglecting any losses due to friction and air resistance.
Thus, the maximum kinetic energy (KE) Dina can reach at the bottom of the slope is also 2450 Joules.
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The maximum kinetic energy she can reach when she skis to the bottom of the slope is 2452 joules
To find the maximum kinetic energy that Dina can reach when she skis to the bottom of the slope, we need to use the principle of conservation of energy, which states that the total energy of a system remains constant.
At the top of the slope, Dina has potential energy due to her position relative to the ground. This potential energy is given by:
PE = m × g × h
where m is Dina's mass (50 kg), g is the acceleration due to gravity (9.8 m/s^2), and h is the height of the slope (5 m).
PE = 50 kg × 9.8 m/s^2 × 5 m = 2450 J
When Dina skis to the bottom of the slope, all of her potential energy is converted into kinetic energy, which is given by:
KE = 1/2 × m × v^2
where v is her velocity at the bottom of the slope.
To find the maximum velocity, we can use the fact that the total energy of the system remains constant:
PE = KE
2450 J = 1/2 × 50 kg × v^2
v^2 = 98 m^2/s^2
v = sqrt(98) = 9.90 m/s
Finally, we can substitute this velocity into the kinetic energy equation to find the maximum kinetic energy that Dina can reach:
KE = 1/2 × 50 kg × (9.90 m/s)^2 = 2452 J
Therefore, Dina can reach a maximum kinetic energy of 2452 Joules when she skis to the bottom of the slope.
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Find the indicated length
Answer:
y = 32/3 or 10.67 units------------------------------
The two smaller right triangles are similar by AA property.
Use ratios of corresponding sides to get:
8/y = 6/8Simplify and solve for y:
8/y = 3/4y = 8*4/3y = 32/3 ≈ 10.67HELP FAST PLEASEEEEEE I NEED HELPPPPP
The median means that as many as friends have less than A. 1. 5 pets as those that have more than A. 1. 5 pets.
What does the median mean ?The median is a measure of central tendency in statistics that represents the middle value of a dataset when it is ordered from smallest to largest. The median is often used as a more robust measure of central tendency than the mean, because it is less affected by extreme values in the dataset.
From the box plot, the data set of friends with pets would be:
0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 2, ,2 ,2, 2, 2, 2, 3, 4, 4, 7.
The median here is:
= ( 10 th position + 11 th position ) / 2
= ( 1 + 2 ) / 3
= 1. 5
This therefore means that as many friends have more than 1. 5 pets as those with less than 1. 5 pets because the median shows the number which had the same number above, and the number below.
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The housing market has been very intense since 2020 when the pandemic began. People in Southern California as well as across the USA wanted to buy homes away from cities with a prefence towards the suburbs and rural areas. Southern California homes experienced a 12. 6 % year over year increase in price gains since 2020 and this is still going on. Inventory is too low, that is the supply of homes is low. Home builders aren't able to build fast enough to keep up with demand, or won't. A: If a modest 2 bedroom 2 bathroom house in Santa Barbara county used to cost $567,000 in 2020, give the exponential formula that models the price of this house over time, assuming the percent appreciation sustains currently and into the future. Let P(t) be the "asking price" of the house. Let "r" be the rate of the appreciation value. Let t be time in years. Use decimals only. B: What would be the price of such a house in 2022? ( Round your answer to two places after the decimal, also known as the hundredths place).
A: P(t) [tex]= $567,000 * (1 + 0.126)^t[/tex]
B: [tex]567,000 * (1 + 0.126)^2 = $671,448.14[/tex]
How can we calculate the price of a 2 bedroom 2 bathroom house in Santa Barbara county in 2022, assuming the current rate of appreciation continues?A: To model the price of the house over time, we can use the exponential formula: P(t) = P₀ * (1 + r)^t, where P₀ is the initial price, r is the rate of appreciation, and t is the time in years.
In this case, the initial price (P₀) of the house is $567,000 and the rate of appreciation (r) is 12.6% expressed as a decimal, which is 0.126. Therefore, the exponential formula to model the price of the house over time would be: P(t) = 567,000 * (1 + 0.126)^t.
B: To find the price of the house in 2022, we substitute t = 2022 - 2020 = 2 into the exponential formula.
P(2) = 567,000 * (1 + 0.126)^2
P(2) = 567,000 * (1.126)^2
P(2) ≈ 567,000 * 1.268
P(2) ≈ $719,976.00
Therefore, the price of such a house in 2022 would be approximately $719,976.00
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The box plot represents the distribution of speeds, in miles per hour, of 100 cars as they passed through a busy intersection. 4 8 12 16 20 24 28 32 36 40 44 48 speed of cars (miles per hour) a. What is the smallest value in the data set? 4 b. What is the largest value in the data set? 48 c. What is the median?â
a. The smallest value in the data set is 4 miles per hour. b. The largest value in the data set is 48 miles per hour. c. The median is 26 miles per hour.
a. The smallest value in the data set is 4 miles per hour.
b. The largest value in the data set is 48 miles per hour.
c. To find the median, we need to arrange the values in order from smallest to largest:
4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48
The median is the middle value in this list. Since there are an even number of values, we take the average of the two middle values:
Median = (24 + 28) / 2 = 26
Therefore, the median speed of the 100 cars as they passed through the busy intersection is 26 miles per hour.
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Find the measure of ZB 75° b
Answer: ∠b = 105°
Step-by-step explanation:
We know that a straight line is equal to 180 degrees. We will create an equation and solve for ∠b.
180° = ∠b + 75°
∠b = 180° - 75°
∠b = 105°
Question 4 of 15
Cryshel is mailing pillows with a total volume of 9. 5 ft3. She needs a mailing
box that has a volume greater than 9. 5 ft.
• Box A: length = 3 ft, width = 2 ft, height = 1. 5 ft
• Box B: length = 2. 5 ft, width = 2 ft, height = 2 ft
Which box is large enough to hold all of her pillows?
O
A. Neither box
B. Both box A and box B
ОО
C. Box B
D. Box A
Answer:
C. Box B
Step-by-step explanation:
You want to know which of these two boxes has a volume greater than 9.5 ft³:
Box A: 3 ft by 2 ft by 1.5 ftBox B: 2.5 ft by 2 ft by 2 ftVolumeThe volume of each box is found by multiplying its dimensions:
Box A: (3 ft)(2 ft)(1.5 ft) = 9 ft³
Box B: (2.5 ft)(2 ft)(2 ft) = 10 ft³
Only box B is large enough, choice C.
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Evaluate JJ ) Ry0 +52, 15y52. (y + xy-2) dA; R= {(x,y): 0 < x
the evaluated double integral is approximately 14.25.
To evaluate the given double integral, we need to first understand the problem properly. We have the function f(x, y) = y + xy, and the region R is described by the inequalities: 0 < x < y^2, and 1 < y < 2.
Now we can set up the double integral:
∬(y + xy) dA over the region R.
Since we are given that 0 < x < y^2 and 1 < y < 2, we can set up the integral using the given limits of integration:
∫(from y = 1 to 2) ∫(from x = 0 to y^2) (y + xy) dx dy.
Now, we can start by integrating the inner integral with respect to x:
∫(from y = 1 to 2) [(yx + (1/2)x^2*y) evaluated from x = 0 to x = y^2] dy.
After evaluating the inner integral, we have:
∫(from y = 1 to 2) (y^3 + (1/2)(y^2)^2*y) dy.
Now, we can integrate the outer integral with respect to y:
[((1/4)y^4 + (1/6)y^6) evaluated from y = 1 to y = 2].
After evaluating the outer integral, we get:
[(1/4)(2^4) + (1/6)(2^6)] - [(1/4)(1^4) + (1/6)(1^6)].
Calculating the final result:
(4 + 10.6667) - (0.25 + 0.1667) = 14.6667 - 0.4167 ≈ 14.25.
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Garden plots in the Portland Community Garden are rectangles limited to 45 square meters. Christopher and his friends want a plot that has a width of 7.5 meters. What length will give a plot that has the maximum area allowed?
The length that will give a plot with the maximum area allowed is 6 meters.
To find the length that will give a plot with the maximum area, we need to use the formula for the area of a rectangle, which is A = lw, where A is the area, l is the length, and w is the width. In this case, we are given that the area is 45 square meters, and the width is 7.5 meters.
Substituting these values into the formula, we get:
45 = l(7.5)
To solve for l, we divide both sides by 7.5:
l = 45/7.5
Simplifying, we get:
l = 6
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plunk and ms. q run a $100$-meter race. plunk runs at $8$ meters per second, and ms. q runs at $5$ meters per second. because ms. q runs slower, she is given a $3$-second head start. plunk wins the race. how much time, in seconds, is it between the time plunk passes ms. q and the time that plunk finishes the race?
The seconds, is it between the time plunk passes Ms. q and the time that plunk finishes the race is 7.5 seconds..
Flow Distance In the Mathematics or Quants part of any competitive test, time is one of the most well-liked and significant topics. For inquiries about a variety of subjects, including motion in a straight line, circular motion, boats and streams, races, clocks, etc.
The notion of Speed, Time, and Distance is frequently employed. Candidates should make an effort to comprehend how the variables of speed, distance, and time interact.
Ms. q being slow will get a head start for the race so,
3 second head start = 3 x 5 = 15 meters
There difference in speed is 8- 5 = 3 m/s
Time required for the Plunk to catch up to Ms. q is:
15 / 3 = 5 seconds when P catches Q
(this is 8 seconds after Q starts the race)
In 5 seconds Plunk runs 5 x 8 = 40 meters this is when they are at the same point that is at time 8 seconds.
60 meters left in the race will take Plunk :
60 m / 8 m/s = 7.5 seconds to finish the race.
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Evaluate the following indefinite integral si 3x^2 – 3x +1/ x^3 + 2
To evaluate the indefinite integral of 3x^2 – 3x +1/ x^3 + 2, we can use partial fraction decomposition.
First, we factor the denominator: x^3 + 2 = (x + ∛2)(x^2 – ∛2x + 2).
Next, we can write the fraction as:
3x^2 – 3x +1/ x^3 + 2 = A/x + B(x^2 – ∛2x + 2) + C(x + ∛2)
Multiplying both sides by the denominator, we get:
3x^2 – 3x + 1 = A(x^2 – ∛2x + 2)(x + ∛2) + Bx(x + ∛2) + C(x^2 – ∛2x + 2)
To solve for A, B, and C, we can plug in specific values of x. For example, if we plug in x = -∛2, we get:
-2√2 + 1 = A(4√2) + C(0)
Therefore, A = (2 – √2)/8.
If we plug in x = 0, we get:
1 = A(2√2) + B(0) + C(√2)
Therefore, C = 1/√2.
Finally, if we plug in x = 1, we get:
1 = A(3√2) + B(1 – √2) + C(1 + √2)
Therefore, B = (-1 + √2)/4.
Now that we have A, B, and C, we can write the original fraction as:
3x^2 – 3x +1/ x^3 + 2 = (2 – √2)/8 * 1/x + (-1 + √2)/4 * (x^2 – ∛2x + 2) + 1/√2 * (x + ∛2)
Using this partial fraction decomposition, we can now integrate each term separately.
Integrating the first term, we get:
∫(2 – √2)/8 * 1/x dx = (1/8)(2ln|x| – √2 ln|x^2 + 2|) + C
Integrating the second term, we can complete the square to get:
∫(-1 + √2)/4 * (x^2 – ∛2x + 2) dx = (-1 + √2)/4 * ∫(x – ∛1/2)^2 + 3/2 dx = (-1 + √2)/4 * ((x – ∛1/2)^2 + 3/2) + C
Integrating the third term, we get:
∫1/√2 * (x + ∛2) dx = (1/2√2) * (x^2/2 + ∛2x) + C
Putting it all together, we have:
∫(3x^2 – 3x +1)/ (x^3 + 2) dx = (1/8)(2ln|x| – √2 ln|x^2 + 2|) + (-1 + √2)/4 * ((x – ∛1/2)^2 + 3/2) + (1/2√2) * (x^2/2 + ∛2x) + C
where C is the constant of integration.
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Find
(Round your answer to the nearest hundredth)
The missing side length is 5√3 centimeters.
We can use the Pythagorean theorem to find the missing side length. The Pythagorean theorem states that in a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse. In equation form, this looks like:
a² + b² = c²
where a and b are the lengths of the legs, and c is the length of the hypotenuse.
To use this formula to solve for the missing side length, we can plug in the values we know:
5² + b² = 10²
We can simplify this equation by squaring 5 and 10:
25 + b² = 100
Next, we can isolate the variable (b) on one side of the equation by subtracting 25 from both sides:
b² = 75
Finally, we can solve for b by taking the square root of both sides:
b = √(75)
This simplifies to:
b = 5*√(3)
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Complete Question:
By using the Pythagoras theorem, Find the value of the Other side when the value of hypotenuse is 10 cm and the value of the side is 5 cm.
Select the expressions that are equivalent to 3v+2v. A. V*5
B. V+5
C. V+5v
D. V+v+v+v+v
The expression that is equivalent to 3v+2v is:
D. v+v+v+v+v
How to write equivalent expressions?Equivalent expressions are expressions that work the same even though they look different. If two algebraic expressions are equivalent, then the two expressions have the same value when we substitute the same value(s) for the variable(s).
To find the expressions that are equivalent to 3v+2v, we need to find the expression which when simplified will give the same expression as 3v+2v. That is: 3v + 2v = 5v
v*5 = 5v
v+5 = v + 5
v+5v = 6v
v+v+v+v+v = 5v
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. let u = <4,8>, v = <-2, 6>. find u + v. (1 point)
how to find find u+v?
The sum of vectors u = <4,8>,and v = <-2, 6> i.e. (u+v) is <2, 14>
To find the sum of vectors u and v (u+v), you need to perform the following steps:
1. Identify the components of vectors u and v: u = <4, 8> and v = <-2, 6>.
2. Add the corresponding components of both vectors: To find the sum (u+v), add the x-components (4 and -2) and the y-components (8 and 6) separately.
3. Calculate the sum of the x-components: 4 + (-2) = 2.
4. Calculate the sum of the y-components: 8 + 6 = 14.
5. Combine the results to form the new vector (u+v): <2, 14>.
So, the sum of vectors u and v (u+v) is <2, 14>.
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For f(x)=1/x^2 show there is no c such that f(1)-f(-1)=f'(c)(2).
Explain why the mean value theorem doesnt apply over the interval
[-1,1]"
Prerequisites for the MVT are not met due to the discontinuity and non-differentiability of f(x) at x = 0 within the interval [-1, 1].
Let's first understand the Mean Value Theorem (MVT). The MVT states that if a function is continuous on the closed interval [a, b] and differentiable on the open interval (a, b), then there exists a number c in (a, b) such that:
f'(c) = (f(b) - f(a)) / (b - a)
Now, consider the function f(x) = 1/x^2. This function is continuous and differentiable for all x ≠ 0. However, in the interval [-1, 1], the function is not continuous nor differentiable at x = 0. Therefore, the Mean Value Theorem does not apply to this interval.
Since the MVT does not apply, we cannot say there exists a c in the interval (-1, 1) such that f'(c) = (f(1) - f(-1)) / (1 - (-1)). This is because the prerequisites for the MVT are not met due to the discontinuity and non-differentiability of f(x) at x = 0 within the interval [-1, 1].
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The graph shows the salaries of 23 employees at a small company. Each bar spans a width of $50,000 and the height shows the number of people whose salaries fall into that interval.
The owner is looking to hire one more person and when interviewing candidates says that on average an employee makes at least $175,000.
How does the owner justify this claim?
Answer:
Based on the given graph, we can see that the bars representing salaries above $175,000 span a total of 7 employee salaries. Since each bar spans a width of $50,000, we can estimate that the total number of employees making at least $175,000 is approximately 7 multiplied by 50,000 divided by 10,000, which equals 35%. Therefore, the owner can justify the claim that on average an employee makes at least $175,000 by stating that approximately 35% of the current employees already make at least that amount. However, it's important to note that this calculation is based on estimates and assumptions and should not be used as a definitive answer.
Identify the line of symmetry for the function below:
g(x) = |x +9|- 11
Answer:
x = -9
Step-by-step explanation:
As this is an absolute value function, the line of symmetry is the x-value of the maximum/minimum point. An absolute value function can be denoted as y = |x - h| + k, where (h, k) is the maximum/minimum point. We only need the x-value of the maximum/minimum point, so we only have to look at "h". Now, we can use y = |x - h| + k and turn it into g(x):
y = |x - h| + k
g(x) = |x - -9| + -11 --> this means h = -9, and the line of symmetry is at x = -9
g(x) = |x + 9| - 11
Answer:
I think x equals --9
What is 30 players for 10 sports expressed as a rate
The rate can be expressed as "3 players per sport"
What is rate?A rate is a ratio that compares two quantities with different units. In this case, we have 30 players and 10 sports. To express this as a rate, we want to compare the number of players to the number of sports. We can write this as:
30 players / 10 sports
To simplify this ratio, we can divide both the numerator (30 players) and denominator (10 sports) by the same factor to get an equivalent ratio. In this case, we can divide both by 10:
(30 players / 10) / (10 sports / 10)
This simplifies to:
3 players / 1 sport
So the rate can be expressed as "3 players per sport" or "3:1" (read as "three to one"). This means that for every one sport, there are three players.
Alternatively, we can express the rate as a fraction or decimal by dividing the number of players by the number of sports:
30 players / 10 sports = 3 players/sport = 3/1 = 3 or 3.0 (as a decimal)
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Mike has some candies. he gave some to his friend. then, his mom gave him twice as much as he had in the beginning. how much did he have in the beginning if he has a total of 60 candies now?
According to given question Mike has 25 candies in the beginning.
Let's assume that Mike had "x" candies in the beginning.
After giving 15 candies to his friend, he would have had (x - 15) candies left.
His mom then bought him twice as many candies as he had in the beginning, which would be 2x candies.
So, the total number of candies Mike has now is (x - 15) + 2x = 60.
Combining like terms, we get 3x - 15 = 60.
Adding 15 to both sides, we have 3x = 75.
Finally, dividing both sides by 3, we find that x = 25.
Therefore, Mike had 25 candies in the beginning.
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The complete question is Mike had some candies. He gave 15 of them to his friend. After that, his mom bought him twice as many candies as he had in the beginning. How many candies did Mike have in the beginning if he now has a total of 60 candies?
Every morning Jim runs for 15 minutes. If Jim runs 4 miles per hour, how far does Jim travel? Use the equation d=rt, where d is distance, r is rate, and t is time.