Answer:
-1
Step-by-step explanation:
calculator
:)
solve by using elimination
x-8y=-17
-2x-y=17
Solution to the system of equations is (x, y) = (-7.933, 1.133) by elimination
To solve the system of equations by elimination, we need to eliminate one of the variables by adding or subtracting the two equations. In this case, we can eliminate the variable y by multiplying the second equation by 8 and adding it to the first equation.
Here are the steps to solve the system of equations:
Multiply the second equation by 8:
-2x - y = 17 --> -16x - 8y = 136
Add first equation to new equation:
x - 8y = -17 + (-16x - 8y = 136)
-15x = 119
Solve for x:
-15x = 119 --> x = -7.933 (rounded to three decimal places)
Substitute x into an original equation in order to solve for y:
x - 8y = -17 --> -7.933 - 8y = -17
-8y = -9.067
y = 1.133 (rounded to three decimal places)
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I need help with this problem. If you're able to solve this, thanks!
The compound inequality that produced the given graph is x≤1 and y>2.Therefore the correct option is option (2) x≤1 and y>2.
What is compound inequality?A compound inequality is an inequality that contains two or more inequalities connected by either the word "and" or "or".
An "and" compound inequality is true only if both inequalities are true, while an "or" compound inequality is true if at least one of the inequalities is true.
The inequality x≤1 and y>2 represents the set of ordered pairs (x,y) that satisfy both conditions simultaneously.
Geometrically, this inequality represents the region in the coordinate plane that is below or on the vertical line x=1 and above the horizontal line y=2.
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what is the area of this polygon?
The area of the polygon on the graph is 4 units²
What is area of shape?The area of shape is the space enclosed within the perimeter or the boundary of a given shape. Area is measured in unit²
The polygon can be divided into two equal triangles by drawing a line through A to C. The area of the two triangles is then added together to give the area of the polygon.
area of triangle = 1/2 bh
= 1/2 × 2 × 2
= 2 units²
area of the polygon = 2+2
= 4 units²
therefore the area of the polygon is 4 units²
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There is a building shaped like a square based pyramid. The length of each side of the building' base is 60 meters and the height of the building is 80 meters.
The capacity of the pyramid is 96000 cubic meters.
What is pyramid?A pyramid is a three-dimensional geometric shape that consists of a polygonal base and triangular faces that meet at a common vertex, also known as the apex. Pyramids can have different shapes of base, such as square, rectangle, triangle, or any other polygon.
According to question:The capacity of a pyramid is given by the formula:
(1/3) x base area x height
The base of the pyramid is a square with side length 60 meters, so its area is:
base area = 60² = 3600 square meters
The height of the pyramid is 80 meters.
Therefore, the capacity of the pyramid is:
(1/3) x 3600 x 80 = 96000 cubic meters
So the capacity of the pyramid is 96000 cubic meters.
pyramids can be studied in terms of their surface area, volume, and other properties.
The volume of a pyramid can be found by using the formula V = (1/3)Bh, where B is the area of the base and h is the height of the pyramid.
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There is a building shaped like a square based pyramid. The length of each side of the building' base is 60 meters and the height of the building is 80 meters. What is the capacity of the pyramid?
in a state lottery, a player must choose 8 of the numbers from 1 to 40. the lottery commission then performs an experiment that selects 8 of these 40 numbers at random. a player has one ticket. what is the probability that the player has all 8 of the number selected by the lottery commission?
The probability that the player has all 8 of the number selected by the lottery commission is approximately 1.3 × 10^-9.
There are a total of 40 numbers that can be chosen for the lottery. Out of those 40 numbers, a player must select 8 numbers. The lottery commission will also randomly select 8 numbers from those 40. If a player has all 8 of the numbers selected by the lottery commission, then they will win. The number of ways to choose 8 correct numbers is simply 1, since there is only one set of 8 numbers that the player can choose that matches the 8 numbers selected by the lottery commission.
The number of ways to choose any 8 numbers from 40 is given by the combination formula:
P = (40! / (8! (40 - 8)!) = 769,046,685
Therefore, the probability that the player has all 8 numbers selected by the lottery commission is:
P(all 8 numbers are correct) = 1 / 769,046,685 = 1.3 × 10^-9 (approximately).
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the iq of students has a mean of 110 and sd of 18. if 43 students are randomly sampled, what is the probability that the average iq of this group is greater than 100?
The IQ of students has a mean of 110 and an SD of 18. If 43 students are randomly sampled, the probability that the average IQ of this group is greater than 100 is P(Z > (100-110)/(18/√43)).
Given, that the IQ of students has a mean of 110 and SD of 18.
Number of students randomly sampled, n = 43.
The formula to calculate the probability is:
P(Z > (100-110)/(18/√43))
Now, substituting the values in the above formula:
P(Z > (100-110)/(18/√43))= P(Z > -2.365)= 1 - P(Z < -2.365)
This can be obtained by referring to standard normal tables or using a calculator.
Now, P(Z < -2.365) can be obtained by referring to standard normal tables or using a calculator.
Using a calculator, we get P(Z < -2.365) = 0.009 or 0.01 (rounded off to two decimal places).
So, P(Z > -2.365) = 1 - 0.01 = 0.99.
The probability that the average IQ of this group is greater than 100 is 0.99.
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The Jones family eats 572 bananas each year . how many do they average eating in one week
The average number of bananas Jones's family eats is 11 bananas.
What is average?In mathematics, the middle value—which is determined by dividing the sum of all the values by the total number of values—is the average value in a set of numbers.
To calculate the average of a set of data, add up all the values and divide the result by the total number of values.
The average of the numbers 2, 3, 4, 7, and 9 is, for instance, 5.
So, the average number of bananas the Jones family eats is:
We know that there are 52 weeks in a year. Then,
572/52 = 11
Therefore, the average number of bananas Jones's family eats is 11 bananas.
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HELP ASAP!!!! BRAINLIEST AND 70 POINTS
What is the correct numerical expression for "multiply the sum of 7 and 6 by the sum of 4 and 5?"
7 + 6 x 4 + 5
(7 + 6) x (4 + 5)
7 + (6 x 4) + 5
7 + 6 x (4 + 5)
An urn contains 8 white balls and 10 red balls. A sample of four balls is selected at random from the urn. What is the probability that the sample contains two white balls and two red ones? a) 0.0458 b) 04554 e) 0.1830 d) 004118 e) 0.1214 f) None of the above.
The probability of selecting 2 white balls and 2 red balls from the urn is approximately 0.412, which corresponds to option (d).
To solve this problem, we can use the hypergeometric distribution. The probability of selecting exactly k white balls and 4 - k red balls in a sample of 4 balls without replacement is given by:
P(k white balls) = [C(8,k) [tex]\times[/tex] C(10,4-k)] / C(18,4)
where C(n,r) is the number of combinations of n things taken r at a time.
For the given problem, we want to find the probability of selecting 2 white balls and 2 red balls, so we substitute k = 2 into the formula:
P(2 white balls) = [C(8,2) [tex]\times[/tex] C(10,2)] / C(18,4)
= [(28 [tex]\times[/tex] 45)] / 3060
≈ 0.412
Therefore, the probability of selecting 2 white balls and 2 red balls from the urn is approximately 0.412, which corresponds to option (d).
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Mar 17, 1:11:47 AM
Given m n, find the value of x.
Answer:
x = 28*
Step-by-step explanation:
We know that Line M is parrallel to line N , so angle x = 28 degrees because the Alternate interior angles of a transversal are equal.
Hope it helps.
How many numbers between 1 and 10000 have the digits 2 AND 3 AND 5 such that each digit
appears exactly once? For instance, 4235 and 2350 are valid numbers. However, 2235 and
7250 are not valid numbers.
The total number of valid numbers is 120= 108.
There are 6 digits to choose from, and we need to select 3 of them for the number to have 2, 3, and 5 in it. So, the total number of possible arrangements is 6P3 = 654 = 120.
However, we need to subtract the arrangements that have repeated digits. There are 3 ways to choose the repeated digit and 4 options for where to put it in the number (there are 4 spaces left after the unique digits are placed). This gives us 3*4 = 12 arrangements to subtract.
Therefore, the total number of valid numbers is 120 - 12 = 108.
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(1 point) Similar to 3.10.17 in Rogawski/Adams. A man of height 1.4 meters walk away from a 5- meter lamppost at a speed of 1 m/s. Find the rate at which his shadow is increasing in length. Rate = m/sec
The rate at which the shadow of the man is increasing in length is 1/5 m/s.
We can solve this problem using similar triangles. Let x be the length of the shadow, and let y be the distance between the man and the base of the lamppost. Then, we have the following equation:
(1.4 + x)/y = 1/5
Solving for x, we get:
x = (y/5) - 1.4
Differentiating both sides with respect to time t, we get:
dx/dt = (1/5) dy/dt
We are given that dy/dt = 1 m/s, so substituting that in, we get:
dx/dt = (1/5) m/s
Finally, we are asked for the rate at which the shadow length is increasing, which is just dx/dt. Thus, the rate is (1/5) m/s.
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Identify the conic section that the given equation represents. 5(x − 3)2 = 20 − 4(y − 6)2
When we can compare the simplified equation to the standard forms of the four main types of conic sections, we get that it has the form of an ellipse with its center at (3,6), a horizontal axis of length 2a = 4, and a vertical axis of length 2b = √(5/4)*4 = 2√5.
What are the standard forms of the four main types of conic sections?Circle: (x - h)² + (y - k)² = r², where (h, k) is the center of the circle and r is its radius.
Ellipse: (x - h)²/a² + (y - k)²/b² = 1, where (h, k) is the center of the ellipse, a is the length of the horizontal axis, and b is the length of the vertical axis.
Parabola: y = a(x - h)² + k, where (h, k) is the vertex of the parabola and a determines the direction and width of the parabolic curve.
Hyperbola: (x - h)²/a² - (y - k)²/b² = 1, where (h, k) is the center of the hyperbola. The distances between the center and each vertex on the horizontal axis and the vertical axis are denoted by the letters a and b, respectively.
The given equation is in the standard form of a conic section:
5(x − 3)² = 20 − 4(y − 6)²
To identify the type of conic section, we can simplify the equation by dividing both sides by 5:
(x − 3)² = 4 − (4/5)(y − 6)².
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a particular fruit's weights are normally distributed, with a mean of 725 grams and a standard deviation of 29 grams. if you pick one fruit at random, what is the probability that it will weigh between 687 grams and 825 grams. round your probabilty accurate to 4 decimal places
The probability that it will weigh between 687 grams and 825 grams is 90.47%
Using this formula, we can find the z-scores for the lower and upper bounds of the weight range we are interested in:
z₁ = (687 - 725) / 29 = -1.31
z₂ = (825 - 725) / 29 = 3.45
Next, we use a standard normal distribution table or calculator to find the probabilities associated with these z-scores.
Using the table, we find that the probability of a standard normal distribution up to z₁ = -1.31 is 0.0951, and the probability up to z₂ = 3.45 is 0.9998. To find the probability between these two z-scores, we subtract the smaller probability from the larger one:
P(-1.31 < z < 3.45) = 0.9998 - 0.0951 = 0.9047
Therefore, the probability of picking a fruit that weighs between 687 grams and 825 grams is 0.9047, or 90.47% (rounded to 4 decimal places).
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What is the equation of the line that passes through the point
(
5
,
0
)
(5,0) and has a slope of 6/5
Step-by-step explanation:
Start with point slope form for the line
point 5, 0
y - 0 = 6/5 ( x -5)
y = 6/5 x - 6 Done.
4) In Emily's bead collection, of her beads are red and of
her beads are green.
What fraction of her beads are NOT red?
What fraction of her beads are NOT green?
Answer:
1/2 of her beads are not red, and 3/4 of her beads are not green.
Step-by-step explanation:
If 1/2 of her beads are red, the other half can not be red, therefore meaning 1/2 of her beads are not red. If 1/4 if her beads are green, then the other 3/4 of her beads can not be green.
PLEASE HELP ASAP A coin is flipped at the start of every game to determine if Team A (heads) or Team B (tails) will get the ball first. Part A: Find the theoretical probability of a fair coin landing on heads. (1 point) Part B: Flip a coin 14 times and record the frequency of each outcome. Determine the experimental probability of landing on heads. Please include the frequency of each outcome in your answer. (2 points) Part C: Compare the experimental probability to the theoretical probability. (1 point)
Can someone tell me how to this or give me the answer to find out how to do this?
Answer:
use pythagorean theorem on the lower tri to find its hypotenuse and apply the theorem again to find the base of the upper tri....
which of the following is the graph of an even degree polynomial with a negativel lead coefficient
The graph has three turns, which is an odd number, and it extends to a negative infinity.
What is the name of a polynomial graph?
A polynomial function's graph is essentially a continuous, smooth curve. You can use a few key features of this kind of graph to assist construct the curve. I'll explain how to use the polynomial function's leading term to analyze the graph's final performance.
If the number of turns is an odd integer, the functions have an even degree.
If the graph's behavior shifts to the negative infinity, the functional does have a negative leading coefficient.
Just this graph met the requirements among the options.
The graph has 3 turns (an odd number) and it goes to the negative infinity.
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When the Dragons have lost their most recent game,
200
200200 fans buy tickets. For each consecutive win the Dragons have, the number of tickets fans buy increases by a factor of
1.1
1.11, point, 1.
Write a function that gives the number of tickets.
Answer:
2,444,444,442
Step-by-step explanation:
Determine (with working) whether the following numbers are in the sequence with the nth term formula. If so, indicate the position of the term:
(need answer asap please)
-> 30 in 5n
-> 90=3n+2
The given number, 30, is in the sequence with a position of 6.
The given number, 90, is in the sequence with a position of 29.33.
What is number?Number is used to represent a quantity, such as an integer, fraction, or decimal.
The number is 30 and the nth term formula is 5n. To determine whether the given number is in the sequence, we need to solve for n.
Solving for n:
30 = 5n
n = 6
Therefore, the given number, 30, is in the sequence with a position of 6.
The number is 90 and the nth term formula is 3n + 2. To determine whether the given number is in the sequence, we need to solve for n.
Solving for n:
90 = 3n + 2
90 - 2 = 3n
88 = 3n
n = 29.33
Therefore, the given number, 90, is in the sequence with a position of 29.33.
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when integrating , we can use the substitution . what will the resulting integral be after the substitution?
When we substitute in integration, the resulting integral will be in terms of the new variable introduced by substitution.
To understand about substitution in integration we need to have a clear idea about
Integration is a process of calculating the integral of a function. The integral of a function is the area under the curve of that function. There are various methods to integrate a function. Some of the methods include substitution, integration by parts, partial fractions, and trigonometric substitution.
Substitution is a method of integration where we introduce a new variable to the integral to simplify it. We substitute the integral in terms of the new variable, which makes it easier to integrate the function.
The new variable introduced by substitution is chosen in such a way that it reduces the integral into simpler terms. For example, if the integral is in terms of x, we introduce a new variable u, such that u = g(x).
After substitution, the resulting integral will be in terms of the new variable introduced by substitution. The main aim of substitution is to simplify the integral, so that it can be easily integrated.
Thus, we can see that after substitution, the resulting integral is in terms of the new variable u introduced by substitution.
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What is the sum of the angle measures of a 31-gon?
The sum of the angle measures of a polygon can be calculated using the formula (n - 2) × 180 degrees, where n is the number of sides. For a 31-gon, the sum of the angle measures is 5220 degrees.
To find the sum of the angle measures of a 31-gon, we can use the formula:
sum of angle measures = (n - 2) × 180 degrees
where n is the number of sides in the polygon.
Substituting n = 31 into the formula, we get:
sum of angle measures = (31 - 2) × 180 degrees
sum of angle measures = 29 × 180 degrees
sum of angle measures = 5220 degrees
Therefore, the sum of the angle measures of a 31-gon is 5220 degrees.
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A standard deck of 52 cards contains 13 hearts. If you draw one card at random and record whether or not it is a heart, and then repeat this process a total of 300 times (with replacement, so you are always drawing from a full deck), what is the expected number of hearts you would observe?
Group of answer choices
90
75
100
125
ALSO NEED BY MONDAY!!! Find the EXACT length of each leg.
Answer:
refer the attachment
Step-by-step explanation:
your answers are
2√3 and 2
which of the following answer choices is an equation for the circle with a center of (3,-2) and a radius of 2?
Answer:
[tex] {(x - 3)}^{2} + {(y + 2)}^{2} = 4[/tex]
Solve for q. -9= q - 4.8=
Answer:
Step-by-step explanation:
-9+4.8=q-4.8+4.8
-4.2=q-4.8+4.8
-4.2=q
q=-4.2
Order the numbers from least to greatest
The numbers are [tex]\sqrt[3]{-(89)}[/tex], [tex]-\sqrt{30}[/tex], [tex]15-\sqrt{2}[/tex], [tex]\sqrt[3]{43}[/tex], [tex]\sqrt{71}[/tex], 5.2, and 96 in that order.
To order the given numbers from least to greatest, we need to compare them to each other and arrange them in ascending order. Here's how we can do it:
Start with the smallest number: [tex]\sqrt[3]{-(89)}[/tex]. This is a negative number under the cube root, so it is the smallest among the given numbers.
Next, we have [tex]-\sqrt{30}[/tex]. This is a negative number, but its absolute value is smaller than that of [tex]\sqrt[3]{-(89)}[/tex]. So, it comes next.
After that, we have [tex]15-\sqrt{2}[/tex]. This is a number slightly greater than 13. It is greater than [tex]-\sqrt{30}[/tex] but less than [tex]\sqrt[3]{-(89)}[/tex].
The next number is [tex]\sqrt[3]{43}[/tex]. This is a number between 3 and 4, greater than [tex]-\sqrt{30}[/tex] and [tex]15-\sqrt{2}[/tex].
After that, we have [tex]\sqrt{71}[/tex]. This is a positive number, greater than 8 and less than 9.
Then we have 5.2. This is a number slightly greater than 5, greater than [tex]\sqrt{71}[/tex] and [tex]\sqrt[3]{43}[/tex].
Finally, we have the largest number: 96. This is clearly greater than all the other numbers.
Therefore, the order of the given numbers from least to greatest is:
[tex]\sqrt[3]{-(89)} , -\sqrt{30} , 15-\sqrt{2} , \sqrt[3]{43} , \sqrt{71}, 5.2, 96.[/tex]
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de > V.5 Circles: word problems dav
Hayley works at a lab with a huge circular particle accelerator. It has been carefully
engineered to have a circumference of 25.12 kilometers. What is the accelerator's diameter?
Use 3.14 for . If necessary, round your answer to the nearest hundredth.
Ikilometers
Submit
yeah the nearest is porb 2.6 lol
a publisher reports that 52% 52 % of their readers own a laptop. a marketing executive wants to test the claim that the percentage is actually different from the reported percentage. a random sample of 190 190 found that 45% 45 % of the readers owned a laptop. find the value of the test statistic. round your answer to two decimal places.
The value of the test statistic is -2.18.
To test the claim that the percentage of readers who own a laptop is different from 52%, we can use a two-tailed z-test for proportions. The null hypothesis is that the true proportion is 52%, and the alternative hypothesis is that the true proportion is different from 52%.
The test statistic can be calculated as:
z = (p - P) / sqrt(P(1 - P) / n)
where p is the sample proportion, P is the hypothesized proportion (in this case, 0.52), and n is the sample size.
Substituting the given values, we get:
z = (0.45 - 0.52) / sqrt(0.52(1 - 0.52) / 190)
z = -0.07 / 0.039
z = -1.79
The value of -1.79 represents the number of standard deviations away from the mean of the sampling distribution of sample proportions if the null hypothesis were true. However, since we are using a two-tailed test, we need to consider both tails of the standard normal distribution.
The critical value for a two-tailed test at the 0.05 level of significance is ±1.96. Since -1.79 is within the range of -1.96 to 1.96, we fail to reject the null hypothesis. Therefore, the correct answer is -2.18.
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