a) The demand function is 134.33e^-0.693p
b) At P = $3, we have elasticity is 0.83, at P = $4, we have elasticity is 1.05, at P = $5, we have elasticity is 1.34.
c) We should sell the cheese at a price of $3.84 per pound to maximize monthly revenue.
d) We should sell the cheese at a price of $4.22 per pound to generate the highest revenue within the timeframe of one month.
a) To construct a demand function of the form q = Ae^-bp, we can use the sales figures for the prices $3 and $5 per pound. First, we calculate the values of A and b:
A = q/p = 403/3 ≈ 134.33
b = ln(q/Ap) / p = ln(403/134.33) / (3-5) ≈ 0.693
Using these values, the demand function becomes:
q = 134.33e^-0.693p
b) To find the price elasticity of demand at each of the prices listed, we can use the formula:
E = (dq/dp) * (p/q)
At P = $3, we have:
E = (dq/dp) * (p/q) = (-134.33 * -0.693 * 3) / 403 ≈ 0.83
At P = $4, we have:
E = (dq/dp) * (p/q) = (-134.33 * -0.693 * 4) / 284 ≈ 1.05
At P = $5, we have:
E = (dq/dp) * (p/q) = (-134.33 * -0.693 * 5) / 225 ≈ 1.34
c) To find the price that will maximize monthly revenue, we can use the formula:
p = (1/b) * ln(A/b)
Plugging in the values of A and b that we calculated earlier, we get:
p = (1/0.693) * ln(134.33/0.693) ≈ $3.84
d) If we only have 200 pounds of cheese and it will spoil in one month, we need to sell it at a price that will generate the highest revenue within that timeframe. To do this, we can use the formula:
R = pq
where R is the revenue, p is the price per pound, and q is the quantity sold. We can express q in terms of p using our demand function:
q = 134.33e^-0.693p
Substituting this into the revenue equation, we get:
R = p * 134.33e^-0.693p
To find the price that will maximize revenue, we can take the derivative of R with respect to p and set it equal to zero:
dR/dp = 134.33e^-0.693p - 93.13pe^-0.693p = 0
Solving this equation numerically, we get:
p ≈ $4.22
This price is different from the price calculated in part (c) because we have a limited quantity of cheese that will spoil, so we need to balance the price and quantity sold to maximize revenue within the given timeframe.
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Use the image to determine the type of transformation shown.
Image of polygon ABCD and a second polygon A prime B prime C prime D prime below.
The type of transformation shown is a vertical transformation
Determining the type of transformation shown.In mathematics, a vertical translation refers to a transformation of a function or graph that involves moving it up or down along the y-axis without changing its vertical transformation.
From the attached figure, we can see that the polygons are moved up or down to map them to one another
This means that the transformation is a vertical transformation
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Complete question
Use the image to determine the type of transformation shown.
Image of polygon ABCD and a second polygon A prime B prime C prime D prime below.
Vertical translation
Reflection across the x-axis
180° counterclockwise rotation
Horizontal translation
Can Someone Help me with this It is not easy
[ 40 POINTS]Ф
Answer:
4^9262144Step-by-step explanation:
You get 4 pennies for a first job, 16 pennies for the second job, 64 pennies for the 3rd job, and you want to know how many pennies you get for the 9th job, if each job quadruples the pay.
Exponential expressionWe can write the number of pennies as a power of 4:
job 1: 4^1 penniesjob 2: 4^2 penniesjob 3: 4^3 pennies...job 9: 4^9 penniesYou will get 4^9 pennies for the 9th job.
That is 262144 pennies.
<95141404393>
Are the events mutually exclusive?
event a: rational numbers
event b: irrational numbers
no - overlapping
yes - mutually exclusive
Answer:
Yes they are mutually exclusive
Step-by-step explanation:
You cannot both be a rational number and an irrational number
Light travels 9.45 \cdot 10^{15}9.45⋅10
15
9, point, 45, dot, 10, start superscript, 15, end superscript meters in a year. There are about 3.15 \cdot 10^73.15⋅10
7
3, point, 15, dot, 10, start superscript, 7, end superscript seconds in a year.
The distance which this light travel per second is equal to 3 × 10⁸ meters per seconds.
What is speed?In Mathematics and Science, speed is the distance covered by a physical object per unit of time.
How to calculate the speed?In Mathematics and Science, the speed of any a physical object can be calculated by using this formula;
Speed = distance/time
By making distance the subject of formula, we have:
Distance, d(t) = speed × time
Distance = (9.45 × 10¹⁵ meters per year) × (1 year/ 3.15 × 10⁷ seconds)
Distance = 3 × 10⁸ meters per seconds.
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Complete Question:
Light travels 9.45 × 10¹⁵ meters in a year. There are about 3.15 × 10⁷ seconds in a year. How far does light travel per second?
What is a good percentage (in decimal form) to multiply your earning to estimate your paycheck?
To estimate your paycheck, a good percentage to multiply your earning by would be 0.75 or 75%. When calculating your paycheck, it's important to account for taxes, deductions, and other withholdings that may be taken out of your gross pay.
This accounts for taxes, deductions, and other withholdings that are typically taken out of your paycheck before you receive your net pay. For example, if you earn $1,000 per pay period, multiplying by 0.75 would give you an estimated net pay of $750. However, keep in mind that this is just an estimate and your actual net pay may vary depending on your specific tax situation and other factors.
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a Open garbage attracts rodents. Suppose that the number of mice in a neighbourhood, I weeks after a strike by garbage collectors, can be approximated by the function P(t) = 2002. 10) a. How many mice are in the neighbourhood initially? b. How long does it take for the population of mice to quadruple? c. How many mice are in the neighbourhood after 5 weeks? d. How long does it take until there are 1000 mice? e. Find P' (5) and interpret the result.
a. There are 1000 mice in the neighborhood initially.
b. The population of mice never quadruple
c. After 5 weeks there are 18 mice in the neighborhood.
d. It takes 0 weeks for there to be 1000 mice.
e. The P' (5) is -96.86, indicates that after 5 weeks, the number of mice is declining at a pace of about 96.86 mice per week.
a. The initial number of mice in the neighborhood can be found by evaluating P(0):
P(0) = 2000/(1 + 10⁰/₁₀) = 2000/(1+1) = 1000
b. To find how long it takes for the population of mice to quadruple, we need to solve the equation:
P(t) = 4P(0)
2000/(1 + 10^(t/10)) = 4*1000
1 + 10^(t/10) = 1/4
10^(t/10) = -3/4
This equation has no real solutions, so the population of mice never quadruples.
c. To find how many mice are in the neighborhood after 5 weeks, we simply evaluate P(5):
P(5) = 2000/(1 + 10^(5/10)) = 2000/(1+100) = 18.18 (rounded to two decimal places)
Therefore, there are approximately 18 mice in the neighborhood after 5 weeks.
d. To find how long it takes until there are 1000 mice, we need to solve the equation:
P(t) = 1000
2000/(1 + 10^(t/10)) = 1000
1 + 10^(t/10) = 2
10^(t/10) = 1
t = 0
Therefore, there are 1000 mice in the neighborhood initially, so it takes 0 weeks for there to be 1000 mice.
e. To find P'(5), we first find the derivative of P(t):
P'(t) = -2000ln(10)/10 * 10^(t/10) / (1 + 10^(t/10))^2
Then we evaluate P'(5):
P'(5) = -2000ln(10)/10 * 10^(1/2) / (1 + 10^(1/2))^2 ≈ -96.86
This means that the population of mice is decreasing at a rate of approximately 96.86 mice per week after 5 weeks.
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prove the value of the expression
Step-by-step explanation:
Expressions are collection of algebric equetion and equal sighn and used for expresion of mankind problems like items, money and other mankind problem.
to know length by using degree but most of the time for the archtechture. soon
E Homework: Week 10 Homework Question 18, 6.6.77 Part 1 of 2 a. Find the magnitude of the force required to keep a 3100-pound car from sliding down a hill inclined at 5.6° from the horizontal b. Find the magnitude of the force of the car against the hill, a. The magnitude of the force required to keep the car from sliding down the hil is approximately pounds. (Round to the nearest whole number as needed.)
The magnitude of the force of the car against the hill is approximately 13690 pounds.
How to find the magnitude of the force required?
a. To find the magnitude of the force required to keep the car from sliding down the hill, we need to calculate the force component perpendicular to the hill (the normal force) and the force component parallel to the hill (the force of friction). The force of friction must be equal and opposite to the component of the weight of the car parallel to the hill to keep the car from sliding.
First, we need to calculate the weight of the car in Newtons:
3100 pounds = 1406.13 kg
Weight = mg = 1406.13 kg * 9.81 m/s^2 = 13791.68 N
The force component perpendicular to the hill is equal to the weight of the car multiplied by the cosine of the angle of inclination:
F_perpendicular = Weight * cos(5.6°) = 13791.68 N * cos(5.6°) = 13689.55 N
The force component parallel to the hill is equal to the weight of the car multiplied by the sine of the angle of inclination:
F_parallel = Weight * sin(5.6°) = 13791.68 N * sin(5.6°) = 1275.02 N
The force of friction is equal to the force parallel to the hill, so:
F_friction = F_parallel = 1275.02 N
Therefore, the magnitude of the force required to keep the car from sliding down the hill is equal to the force component perpendicular to the hill plus the force of friction:
F_required = F_perpendicular + F_friction = 13689.55 N + 1275.02 N = 14964.57 N
Rounded to the nearest whole number, the magnitude of the force required to keep the car from sliding down the hill is approximately 14965 pounds.
b. To find the magnitude of the force of the car against the hill, we just need to calculate the force component perpendicular to the hill (the normal force):
F_normal = F_perpendicular = 13689.55 N
Rounded to the nearest whole number, the magnitude of the force of the car against the hill is approximately 13690 pounds.
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Given the measure of an acute angle in a right triangle, we can tell the ratios of the lengths of the triangle's sides relative to that acute angle.
Here are the approximate ratios for angle measures
55
°
55°55, degree,
65
°
65°65, degree, and
75
°
75°75, degree.
Angle
55
°
55°55, degree
65
°
65°65, degree
75
°
75°75, degree
adjacent leg length
hypotenuse length
hypotenuse length
adjacent leg length
start fraction, start text, a, d, j, a, c, e, n, t, space, l, e, g, space, l, e, n, g, t, h, end text, divided by, start text, h, y, p, o, t, e, n, u, s, e, space, l, e, n, g, t, h, end text, end fraction
0.57
0.570, point, 57
0.42
0.420, point, 42
0.26
0.260, point, 26
opposite leg length
hypotenuse length
hypotenuse length
opposite leg length
start fraction, start text, o, p, p, o, s, i, t, e, space, l, e, g, space, l, e, n, g, t, h, end text, divided by, start text, h, y, p, o, t, e, n, u, s, e, space, l, e, n, g, t, h, end text, end fraction
0.82
0.820, point, 82
0.91
0.910, point, 91
0.97
0.970, point, 97
opposite leg length
adjacent leg length
adjacent leg length
opposite leg length
start fraction, start text, o, p, p, o, s, i, t, e, space, l, e, g, space, l, e, n, g, t, h, end text, divided by, start text, a, d, j, a, c, e, n, t, space, l, e, g, space, l, e, n, g, t, h, end text, end fraction
1.43
1.431, point, 43
2.14
2.142, point, 14
3.73
3.733, point, 73
Use the table to approximate
m
∠
L
m∠Lm, angle, L in the triangle below.
3.2
3.2
11.9
11.9
L
L
K
K
J
J
Choose 1 answer:
The angle measure of L in the triangle is approximately 75°.
Based on the given table, we can see that the ratio of the opposite leg length to the adjacent leg length for an angle measure of 75° is approximately 3.73. Looking at the triangle in the question, we can see that the side opposite to angle L is the hypotenuse and the adjacent leg is LK.
Therefore, the ratio of the opposite leg length to the adjacent leg length for angle L is equal to the ratio of the hypotenuse length to the length of segment LK.
From the figure, we can see that the length of segment LK is approximately 3.2 units. Therefore, the length of the hypotenuse is approximately 3.73 times the length of segment LK, or:
hypotenuse length ≈ 3.73 × 3.2 ≈ 11.9
Therefore, the angle measure of L is approximately 75°.
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Calculate the derivatives of all orders: f'(x), F"(x), F"(x), f(4)(x), ..., f(n)(x), ... f(x) = (-2x + 1)3 f'(x) f''(x) = f''(x) = f(4)(x) = f(n) (x) for all n 25
The first derivative of f(x) is f'(x) = -12(-2x + 1)2. The second derivative is f''(x) =48(-2x + 1), and all higher derivatives have the form f^(n)(x) = (-1)n * 6 * n! * (-2x + 1)^(3-n).
To calculate the derivatives of all orders for f(x) = (-2x + 1)3, we first need to find the first derivative:
f(x) = (-2x + 1)³
f'(x) = 3(-2x + 1)²(-2)
f'(x) = 3(-2x + 1)²(-2)
f'(x) = -12(-2x + 1)2
Next, we find the second derivative:
f''(x) = d/dx(-12(-2x + 1)²)
f''(x) = 2(-2)(-12)(-2x + 1)
f''(x) = -12[2(-2x + 1)(-2)]
f''(x)= 48(-2x + 1)
We can continue this process to find the third and fourth derivatives:
f'''(x) = d/dx(96(-2x + 1))
f'''(x) = -384
f''''(x) = d/dx(-384)
f''''(x) = 0
Notice that the fourth derivative is 0, meaning that all higher derivatives will also be 0.
This is because the original function is a polynomial of degree 3, so its fourth derivative will be the derivative of a constant, which is 0.
Therefore, we can conclude that:
f(4)(x) = 0
f(n)(x) = 0 for all n ≥ 4.
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pls hep
Simplify: |x+3| if x>5
we can simplify |x + 3| to x + 3 when x is greater than 5.
How to deal with mode?The absolute value function |x| is defined as the distance of x from zero on the number line. This means that |x| is always non-negative, so it can be expressed as a non-negative number.
In this case, we are given that x > 5, which means that x is greater than 5. If we add 3 to both sides of this inequality, we get:
x + 3 > 5 + 3
x + 3 > 8
This tells us that x + 3 is also greater than 8. Therefore, when x is greater than 5, the expression |x + 3| represents the distance of x + 3 from zero, which is equal to x + 3 itself because x + 3 is positive.
As a result, we can simplify |x + 3| to x + 3 when x is greater than 5.
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Twice the difference of a number and 3 is at most -24
Answer:
2(x - 3) < -24
x - 3 < -12
x < -9
The inequality that represents the given statement is 2(x-3) ≤ -24, where x is the unknown number.
The given statement can be translated into an inequality as "twice the difference of a number (x) and 3 is at most -24". Mathematically, this can be represented as 2(x-3) ≤ -24. Simplifying this inequality, we get 2x - 6 ≤ -24, or 2x ≤ -18, which gives x ≤ -9. Therefore, any number less than or equal to -9 satisfies the given statement.
For example, x = -10 satisfies 2(-10-3) = -26, which is less than or equal to -24. However, any number greater than -9 does not satisfy the given statement. For example, x = -8 gives 2(-8-3) = -22, which is greater than -24. Therefore, the solution set for the given inequality is x ≤ -9.
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Mai  Drew does design shown below each rectangle in the design have the same area each rectangle is a what fraction of the area of the complete design 
Answer:
1/3
Step-by-step explanation:
There are 3 rectangles, so 1 rectangle is 1 out of 3 rectangles. So the fraction would be 1/3.
Each rectangle is 1/3 fraction of the complete design.
What are Fractions?Fractions are type of numbers which are written in the form p/q, which implies that p parts in a whole of q.
Here p, called the numerator and q, called the denominator, are real numbers.
Given is a design drawn by Mai.
The design consists of three rectangles.
Also, given that each of the rectangle has the same area.
This means that if we find one of the rectangle's area, multiply it by 3 and we will get the whole area.
Or in other words, if we find the whole area, then divide it by 3 to get each of the rectangle's area.
So the required fraction is 1/3.
Hence the fraction is 1/3.
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The lateral area of a cone is 614cm squared. The radius is 16.2 cm. What is the slant height to the nearest tenth of a cm?
The slant height of the given cone is 16.36 cm.
What is the slant height?The length from the base to the peak along the "center" of a lateral face of an object (like a frustum or pyramid) is its slant height.
It is, in other words, the height of the triangle that a lateral face is a part of (Kern and Bland 1948, p.
So, calculate the slant height as follows:
614π = πr√h²+r²
614 = 16.2√h²+16.2²
614 = 262.44√h²
614/262.44 = h
2.33
Height = 2.33 cm
Then, slant height formula:
s=√(r² + h²)
s=√(16.2² + 2.33²)
s=√267.8689
s=16.36 cm
Therefore, the slant height of the given cone is 16.36 cm.
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Which TWO statements represent the relationship between y = 5x and y = log5 x The are the exponential and logarithmic form of the same equation They are symmetrix over the line y=0 They are symmetric over the line y=x They are inverses of one another
The TWO statements that represent the relationship between y = 5x and y = log5 x are:
1. They are the exponential and logarithmic form of the same equation.
2. They are inverses of one another.
The two equations are related because they represent the same relationship between x and y, but in different forms. The first equation is an exponential equation, where y is a power of 5 raised to the x power. The second equation is a logarithmic equation, where y is the exponent to which 5 must be raised to get x.
Because the two equations represent the same relationship, they are inverses of one another. If we take the logarithm of both sides of the exponential equation, we get the logarithmic equation. If we raise 5 to both sides of the logarithmic equation, we get the exponential equation. Therefore, the two equations are inverses of one another.
Which statement is true about the relationship between the diameter and circumference of a circle?
A. The diameter and circumference of a circle have a proportional relationship.
B. The diameter is a product of the circumference and pi.
C. The constant of proportionality between the diameter and circumference of a circle is a rational number.
D. The circumference of a circle is the quotient of the diameter and pi.
Option A The diameter and circumference of a circle have a proportional relationship is True .
What is diameter and circumference?Diameter
The diameter is the length acrοss the circle at its widest pοint, measured frοm center tο center . The radius, a related measurement, is a line that extends frοm the circle's centre tο its edge. The diameter is equivalent tο twice the radius. (A chοrd is a line that crοsses the circle but is nοt at the widest pοint.)
Circumference
The circle's perimeter, οr the distance arοund it, is knοwn as its circumference. Imagine encircling a circle with a string. Imagine taking the string οut and extending it in a straight line. This string's length, if measured, wοuld represent yοur circle's circumference.
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Q=1/6p^2
p= 13. 6 correct to 3 significant figures.
By considering bounds, work out the value of q to a suitable degree of accuracy.
Give a reason for your answer.
+
The value of Q, taking into account the significant figures is 30.8.
To work out the value of Q given the value of p, we can substitute the value of p into the equation Q = (1/6) × p².
Given p = 13.6, we can calculate Q as follows:
Q = (1/6) × (13.6)²
Q = (1/6) × 184.96
Q = 30.826666...
Now, let's consider the significant figures of the given value of p, which is 13.6 (3 significant figures).
Since the value of p has 3 significant figures, we should round our final answer for Q to 3 significant figures as well.
Considering the value of Q to a suitable degree of accuracy, we can round our answer to three significant figures, which gives us:
Q = 30.8
Therefore, the value of Q, taking into account the significant figures, is 30.8.
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Given the following triangle, If Sin F = 3/5 , then find the Cos D: A) 4/5 B) 4/3 C) 3/4 D) 3/5
If Sin F = 3/5 , then the value of Cos D is 4/5 (option a)
Let us consider the triangle in the given question. Since we are given that Sin F = 3/5, we know that the side opposite angle F is 3 and the hypotenuse is 5. Using Pythagoras theorem, we can find the length of the adjacent side as follows:
Opposite² + Adjacent² = Hypotenuse²
3² + Adjacent² = 5²
9 + Adjacent² = 25
Adjacent² = 16
Adjacent = 4
So we have found that the length of the adjacent side is 4. Now we can use the definition of cosine to find Cos D.
Cosine is defined as the ratio of the adjacent side to the hypotenuse. Therefore,
Cos D = Adjacent/Hypotenuse = 4/5
Hence, the answer is option A) 4/5.
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A business invests $25,000 in an account that earns 5.1% simple interest annually.
What is the value of the account after 4 years?
[tex]~~~~~~ \textit{Simple Interest Earned Amount} \\\\ A=P(1+rt)\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$25000\\ r=rate\to 5.1\%\to \frac{5.1}{100}\dotfill &0.051\\ t=years\dotfill &4 \end{cases} \\\\\\ A = 25000[1+(0.051)(4)] \implies A=25000(1.204)\implies A = 30100[/tex]
Find the product. Assume that no denominator has a value of 0.
64e^2/5e • 3e/8e
Answer:
12.8
Step-by-step explanation:
First, we can simplify each fraction separately:
64e^2/5e = 64/5e^(1-1) = 64/5
3e/8e = 3/8
Now we can multiply:
(64/5) * (3/8) = 12.8
Therefore, the product is 12.8.
The joint density function for a pair of random variables X and Y is given. (Round your answers to four decimal places.) f(x, y) = Cx(1 + y) if 0 <= x <= 2, 0 <= y <= 4 otherwise f(x,y) = 0
(a) Find the value of the constant C. I already have 1/24.
(b) Find P(X <= 1, Y <= 1)
(c) Find P(X + Y <= 1).
(a) The value of the constant is 1/24, (b) P(X<=1,Y<=1) is 5/48 and (c) P(X + Y <= 1) is also 5/48
(a) The constant C can be found by using the fact that the total probability of the joint density function over the entire space is equal to 1. Therefore, we integrate the joint density function over the region where it is defined and set it equal to 1:
∫∫f(x,y) dA = 1
∫[0,2]∫[0,4] Cx(1+y) dy dx = 1
C∫[0,2]x[(y+(y²)/2)] [0,4] dx = 1
C(24/5) = 1
C = 5/24
(b) To find P(X <= 1, Y <= 1), we integrate the joint density function over the region where X <= 1 and Y <= 1:
P(X<=1,Y<=1) = ∫[0,1]∫[0,1] (5/24) x(1+y) dy dx
= (5/24) ∫[0,1] x(1+(1/2)) dx
= (5/24) [(1/2) + (1/6)]
= 5/48
(c) To find P(X + Y <= 1), we integrate the joint density function over the region where X + Y <= 1:
P(X+Y<=1) = ∫[0,1]∫[0,1-x] (5/24) x(1+y) dy dx
= (5/24) ∫[0,1] x(1+(1-x)/2) dx
= (5/24) [(1/2) - (1/12)]
= 5/48
Therefore, P(X + Y <= 1) = 5/48.
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Boris's backyard has cement and grass. Find the area of the part with cement.
(Sides meet at right angles. )
4 m
1 m
2 m
grass
5 m
3 m
cement
5 m
The constant of proportionality between the number of yards Jackson can mow and the number of hours is 3/4.
To find the area of the part with cement, we need to find the area of the entire rectangle and then subtract the area of the part with grass.
The area of the rectangle is: length x width = 5 m x 4 m = 20 m²
The area of the part with grass is: length x width = 3 m x 2 m = 6 m²
So the area of the part with cement is:
20 m² - 6 m² = 14 m²
Therefore, the area of the part with cement is 14 square meters.
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< ABC ≈ < DEF
False
True
Answer:
True (I think)
Step-by-step explanation:
Same pattern.
A -> B -> C.
D -> E -> F.
Would be false if either one didn't share the same pattern.
Determine all of the values of that satisfy the condition cos =0 where 0 ≤ 0 <360°
All the value of of that satisfy the condition cos θ = - 1/2 ,
where 0 ≤ θ <360° are,
⇒ 120°, 240°
Given that;
Expression is,
cos θ = - 1/2
where 0 ≤ θ <360°
Since, cos θ = - 1/2
Hence, It belong in second and third quadrant.
So, cos θ = - 1/2
cos θ = 120°
cos θ = 240°
Thus, All the value of of that satisfy the condition cos θ = - 1/2 ,
where 0 ≤ θ <360° are,
⇒ 120°, 240°
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Find the slope of the points (-10, -52)
and (-70, -32)
Answer:
Slope= -1/3
Step-by-step explanation:
The slope is found using (y₂ - y₁) / (x₂ - x₁)
(y₂ - y₁)
So let's do the numerator first with the y. -52-(-32). The two negative signs make 32 positive so -52 + 32= -20
(x₂ - x₁)
Now the denominator, x. -10-(-70). Same thing here, the two negative signs make 70 positive so -10 + 70 = 60
(y₂ - y₁) / (x₂ - x₁)
Now put them together so -20/60 which equals -1/3 which the slope
Yellowstone national park is a popular field trip destination. this year the
senior class at high school a and the senior class at high school b both
planned trips there. the senior class at high school a rented and filled 2
vans and 8 buses with 254 students. high school b rented and filled 6
vans and 11 buses with 398 students. every van had the same number of
students in it as did the buses. find the number of students in each van and
in each bus
let x represent high school a let y represent high school b
The number of students in each bus is 15, and the number of students in each van is 28.
To find the number of students in each van and bus for the field trip to Yellowstone National Park, we can set up a system of equations using the given information. Let x represent the number of students in each van and y represent the number of students in each bus.
For high school A, we have:
2x + 8y = 254
For high school B, we have:
6x + 11y = 398
Now, we can solve this system of equations using the substitution or elimination method. We will use the elimination method:
Step 1: Multiply the first equation by 3 to make the coefficients of x the same in both equations:
6x + 24y = 762
Step 2: Subtract the second equation from the new first equation:
(6x + 24y) - (6x + 11y) = 762 - 398
13y = 364
Step 3: Divide both sides by 13 to find the value of y:
y = 364 / 13
y = 28
Now that we have the number of students in each bus, we can find the number of students in each van:
Step 4: Substitute y back into the first equation:
2x + 8(28) = 254
2x + 224 = 254
Step 5: Subtract 224 from both sides to find the value of x:
2x = 30
Step 6: Divide both sides by 2 to find x:
x = 15
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The first term of a pattern is 509. The pattern follows the "subtract 7" rule. Which number is a term in the pattern?
A:516
B:500
C:495
D:464
Answer:
C
Step-by-step explanation:
first fine the nth term
a+(n-1)d
509+7n+7
516-7n
then equate the ans to the nth term
495=516-7n
7n=516-495
7n= -21
n= -3
1. Find the first derivative of x2/3 + y2/3 = k1 2. Find the first derivative of x cos(k1 x + k2 y) = y sen x.
We get:
[tex]y' = [x k_1 sin(k_1 x + k_2 y) - cos(k_1 x + k_2 y)] / [cos x - y sin x][/tex]
How to find the first derivative?To find the first derivative of [tex]x^{(2/3)} + y^{(2/3)} = k_1^2[/tex], we can use implicit differentiation with respect to x. Taking the derivative of both sides, we get:
[tex](2/3)x^{(-1/3)} dx/dx + (2/3)y^{(-1/3)} dy/dx = 0[/tex]
Simplifying and solving for [tex]dy/dx[/tex], we get:
[tex]dy/dx = - (x/y)(y/x)^{(-2/3)} = - (x/y) (y/x)^{(2/3)}[/tex]
which can also be written as:
[tex]dy/dx = - (y/x)^{(1/3)}[/tex]
To find the first derivative of [tex]x cos(k_1 x + k_2 y) = y sin x[/tex], we can also use implicit differentiation with respect to x. Taking the derivative of both sides, we get:
[tex]cos(k_1 x + k_2 y) - x k_1 sin(k_1 x + k_2 y) = y \cos x[/tex]
Solving for y' (i.e., [tex]dy/dx[/tex]), we get:
[tex]y' = [x k_1 sin(k_1 x + k_2 y) - cos(k_1 x + k_2 y)] / [cos x - y sin x][/tex]
Note that we could have also solved for x' (i.e., [tex]dx/dy[/tex]) if we had chosen to differentiate with respect to y instead of x
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The derivative of the function ds/dt of the function s = (tan² t - sec² t)⁵ is ...
The derivative of s with respect to t is:
ds/dt = 10(sec² t - tan t) * (tan² t - sec² t)⁴
How to find the derivative of the function?To find the derivative of s with respect to t, we will use the chain rule and the power rule of differentiation.
Let u = (tan² t - sec² t). Then, s = u⁵.
Using the chain rule, we have:
ds/dt = (du/dt) * (ds/du)
Now, we need to find du/dt and ds/du.
Using the chain rule again, we have:
du/dt = d/dt(tan² t - sec² t) = 2tan t * sec² t - 2sec t * tan t * sec t = 2sec² t * (tan t - sec t)
To find ds/du, we can simply apply the power rule:
ds/du = 5u⁴
Substituting these into the original equation for ds/dt, we get:
ds/dt = (2sec² t * (tan t - sec t)) * (5(tan² t - sec² t)⁴)
Therefore, the derivative of s with respect to t is:
ds/dt = 10(sec² t - tan t) * (tan² t - sec² t)⁴
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For a science experiment Corrine is adding hydrochloric acid to distilled
water. The relationship between the amount of hydrochloric acid, x, and the
amount of distilled water, y, is graphed below. Which inequality best
represents this graph?
The best inequality that represents the relationship between the amount of hydrochloric acid (x) and the amount of distilled water (y) in the given graph is 3y - 2x > 0, option D is correct.
The graph shows a straight line with a negative slope passing through the origin. As the amount of hydrochloric acid, x, increases, the amount of distilled water, y, decreases
To see why, let's use a point on the line, such as (2, 3), and plug it into the inequality. We get:
3(3) - 2(2) > 0
9 - 4 > 0
This is true, so the point (2, 3) is a solution to the inequality. Any point on the line will also satisfy this inequality since it represents all possible combinations of x and y that Corrine can use in her experiment.
Alternatively, we can rewrite the inequality in slope-intercept form:
y < (2/3)x
This means that the y-values on the line are less than the corresponding values of (2/3)x. So as x increases, y must decrease to stay below the line. This confirms that 3y - 2x > 0 is the correct inequality.
Hence, option D is correct.
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The correct question is:
For a science experiment, Corrine is adding hydrochloric acid to distilled water. The relationship between the amount of hydrochloric acid, x, and the amount of distilled water, y, is graphed below. Which inequality best represents this graph?
A. 2y - 3x < 0
B. 3y - 2x < 0
C. 2y - 3x > 0
D. 3y - 2x > 0