If y varies inversely as x and y = 18 when x = 4, what is y when x = 242

Answer:

Its A. on edge

Step-by-step explanation:

could that really be simplified anymore!!!!!

The simplified expression of (√12+6)(-√8-√2) is  -6(√6 + √2).

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

(√12 + 6) ( -√8 - √2)

√12 x -√8 - √12 x √2 + 6 x -√8 - 6 x -√2

-√96 - √24 - 6√8 + 6√2

-√(16x6) - √(4x6) - 6√(4x2) + 6√2

-4√6 - 2√6 - 12√2 + 6√2

-6√6 - 6√2

-6(√6 + √2)

Thus,

-6(√6 + √2) is our final expression.

Learn more about expressions here:

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Answer:

[tex]0.0134[/tex]

Step-by-step explanation:

we have

[tex]2(e^{-5})[/tex]

Using a calculator

[tex](e^{-5})=0.0067[/tex]

substitute

[tex]2(0.0067)=0.0134[/tex]

Answer:

Step-by-step explanation:

The point-slope equation of a line:

[tex]y-y_1=m(x-x_1)[/tex]

m - slope

(x₁, y₁) - point

We have the equation

[tex]y-4=3(x+2)\\\\y-4=3(x-(-2))[/tex]

Therefore

m = 3

(x₁, y₁) = (-2, 4)

Find the circumference of the full circle:

Circumference = 2 x PI x radius.

The radius is given as the length of chain 16 feet.

Circumference = 2 x 3.14 x 16 = 100.48 feet.

The dog can walk 130 degrees.

Multiply the circumference by the fraction of a complete circle ( 360 degrees)

Distance = 100.48 x (130/360) = 36.28 feet

Round to 36.3 feet.

The answer is (4) 36.3 feet.

Answer:

Step-by-step explanation:

hundred thousandths

In the number 587,096, the value of the digit 5 would be 500,000 because it is in the hundred thousands position. We can express this as 5*100,000.

In the number 587,096, the digit 5 is in the hundred thousands place. This means that the value of the digit 5 is not simply 5, but rather 500,000. To express this, we can write the number as 5*100,000. We multiply the actual digit (5) by its place value (100,000).

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Answer:

TRUE

Step-by-step explanation:

TRUE

a_1 = 2

a_n = 2*(an_1)

if we start with 2, we would get

a_2 = 2*(a_1) = 2*(2) = 4

a_3 = 2*(a_2) = 2*(4) = 8

a_4 = 2*(a_3) = 2*(8) = 16

a_5 = 2*(a_4) = 2*(16) = 32

.

.

.

and so on

Answer:

the answer is TRUE

Answer:

Correct.

Step-by-step explanation:

I am assuming you want to verify the above. If you enter this product into your calculator you'll get a result of 1.

Answer:

see explanation

Step-by-step explanation:

Using the double angle identity

sin2x = 2sinxcosx

Consider the left side

cos20. cos40. cos80

= [tex]\frac{1}{2sin20}[/tex] (2sin20cos20)cos40.cos80

= [tex]\frac{1}{2sin20}[/tex] (sin40cos40cos80

= [tex]\frac{1}{4sin20}[/tex] (2sin40cos40)cos80

= [tex]\frac{1}{4sin20}[/tex] (sin80cos80)

= [tex]\frac{1}{8sin20}[/tex] (2sin80cos80)

= [tex]\frac{1}{8sin20}[/tex] sin160

= [tex]\frac{1}{8sin20}[/tex] sin(180 - 20)

= [tex]\frac{1}{8sin20}[/tex] sin20

= [tex]\frac{1}{8}[/tex]

Hence

8(cos20cos40cos80) = 8 ×[tex]\frac{1}{8}[/tex] = 1 = right side

Answer:

Think simple.

angle 1 and the angle with the measurement of 110° are subplementary angles, therefore:

∠1 + 110° = 180°

∠1           = 180° - 110° = 70°

The approximate surface area of Arizona is calculated as 19.4% of Alaska's surface area, which is 588,000 square miles. By converting the percentage to a decimal and multiplying, we find that Arizona's surface area is approximately 114,072 square miles.

The question asks us to find the approximate surface area of the state of Arizona if it is 19.4% of the surface area of Alaska. To find this, we can use the known surface area of Alaska, which is approximately 588,000 square miles.

Here are the steps to calculate the surface area of Arizona:

So, the approximate surface area of the state of Arizona is 114,072 square miles.

The approximate surface area of the state of Arizona is 114,072 square miles, calculated as 19.4% of Alaska's surface area of 588,000 square miles.

To find the surface area of Arizona, we utilize the fact that it constitutes approximately 19.4% of Alaska's surface area.

This means that the surface area of Arizona is roughly 19.4% of the surface area of Alaska.

Given that the surface area of Alaska is approximately 588,000 square miles, we can calculate the surface area of Arizona by multiplying this value by 19.4%.

Mathematically, this can be expressed as:

[tex]\[ \text{Surface area of Arizona} = 0.194 \times \text{Surface area of Alaska} \][/tex]

Substituting the known value for the surface area of Alaska:

[tex]\[ \text{Surface area of Arizona} = 0.194 \times 588,000 \][/tex]

Calculating this yields:

[tex]\[ \text{Surface area of Arizona} \approx 0.194 \times 588,000 \][/tex]

[tex]\[ \text{Surface area of Arizona} \approx 114,072 \][/tex]

Therefore, the approximate surface area of the state of Arizona is 114,072 square miles, calculated as 19.4% of Alaska's surface area of 588,000 square miles.

This demonstrates the relative size of Arizona compared to Alaska.

Answer:

the solution set consists of {x < -2 ∪ x > 10/3}

Step-by-step explanation:

|3x - 2| > 8 is equivalent to the following set of inequalities:

1) 3x - 2 > 8

and

2) -(3x - 2) > 8

In case 1, above, add 2 to both sides, obtaining 3x > 10, or x > 10/3.

In case 2, above, carry out the indicated multiplication first:

-3x + 2 > 8.  Next, subtract 2 from both sides:  -3x > 6.

Next, divide both sides by -3, remembering to reverse the direction of the inequality sign:  x < -2.

Thus, the solution set consists of {x < -2 ∪ x > 10/3}

Answer:

x < -2 or x > 10/3

Step-by-step explanation:

3x - 2 > 8

3x > 10

x > 10/3

-3x + 2 > 8

-3x > 6

x < -2

x < -2 or x > 10/3

Answer:

7x² - 40x - 12 = 0

Step-by-step explanation:

Solve the rational equation by combining expressions and isolating the variable. After doing that, then apply the Quadratic Formula to the listed answer choices to see if they give you the exact same x-intercepts, EXCEPT for this one, where you can easily factor this one. It is "process of elimination". Sometimes you have to try it.

Answer:

-9x^3(x - 7)(x + 3)

Step-by-step explanation:

The probability that a sample chosen at random has a proportion of registered voters who vote between 0.37 and 0.39, is 96.18%

To find the probability that a sample chosen at random has a proportion of registered voters who vote between 0.37 and 0.39, we need to standardize the values using the z-score formula. The z-score is calculated as (x - mean) / standard deviation. In this case, the mean proportion of registered voters who vote is 0.38 and the standard deviation is 0.0485. So, for 0.37:

z = (0.37 - 0.38) / 0.0485 = -2.0619

Using the standard normal table, we can find the area to the left of -2.0619, which is approximately 0.0191. For 0.39:

z = (0.39 - 0.38) / 0.0485 = 2.0619

Again, using the standard normal table, we can find the area to the left of 2.0619, which is approximately 0.9809.

To find the probability between 0.37 and 0.39, we subtract the smaller area from the larger area: 0.9809 - 0.0191 = 0.9618, or 96.18%.

Answer:

3

Step-by-step explanation:

You add the total number of pets, and get 15. Then divide it by the number of people and get 3.

Answer: The mean is 3

Step-by-step explanation: In order to find the mean, you must add all the numbers (4+2+5+1+3) and then in this problem, you have to divide it by five since Spencer surveyed only five of his friends.

4+2+5+1+3=15

15 divided by 5 equals 3

Answer:

radius = 30 yd , cost of cement = $7065

Step-by-step explanation:

First we will find the area of the circular sectors. From that we can find the cost of cement and their radius.

The area of the playground is ...

playground area = (109 yd)^2 = 11,881 yd^2

Then the area of the skating rinks is:

rink area = playground area - remaining field

rink area = 11,881 yd^2 - 9,055 yd^2 = 2,826 yd^2

Then the cost of cement for the rink area is ...

(2826 yd^2)($2.50 yd^2) = $7065

The four quarter-circle skating rinks add to a total area of a full circle. That area is given by ...

A = πr^2

Put the values in the formula:

2826 = 3.14r^2

Divide both sides by 3.14

900 = r^2

By taking square root at both sides we get,

30 = r

The radius of each quadrant is 30 yards....

Final answer:

To find out how much Julia's movie ticket cost, we subtracted the cost of the popcorn ($7) from the total amount spent ($15) to get the movie ticket price of $8.

Explanation:

The student's question asks how much Julia's movie ticket cost if she spent a total of $15 on a movie ticket and popcorn combined, given that the popcorn cost $7. To solve this, we subtract the cost of the popcorn from the total amount spent.

Here's the calculation step by step:

Start with the total amount spent: $15.

Subtract the cost of the popcorn: $15 - $7.

The result gives us the cost of the movie ticket: $8.

Therefore, Julia's movie ticket cost $8.

Answer:

-1 1/2

Step-by-step explanation:

9/10 ÷ -3/5

Copy dot flip

9/10 * -5/3

-45/30

Divide the top and bottom by 15

-3/2

Change this to a mixed number

-1 1/2

Step-by-step explanation:

The probability of getting tails is 0.5.  The probability of getting tails 335 times is:

P = (0.5)^335

P = 1.43×10^-101

P ≈ 0

Answer:

5x2 - x + 6

Step-by-step explanation:

(6x2-x+8)-(x2+2)

We gonna use KCC which is Keep Change Change and distributing property

multiple (6x2-x+8) by 1 and (x2+2) by -1

6x2-x+8 -x2 - 2

combine the like terms

6x2 - x2 + 8 - 2 - x

5x2 + 6 - x

arrange in order

5x2 - x + 6

[tex]\bf (\stackrel{x_1}{-2}~,~\stackrel{y_1}{-\frac{9}{2}})~\hspace{10em} slope = m\implies -\cfrac{1}{4} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\left( -\cfrac{9}{2} \right)=-\cfrac{1}{4}[x-(-2)] \\\\\\ y+\cfrac{9}{2}=-\cfrac{1}{4}(x+2)\implies y+\cfrac{9}{2}=-\cfrac{1}{4}x-\cfrac{1}{2}\implies y=-\cfrac{1}{4}x-\cfrac{1}{2}-\cfrac{9}{2}[/tex]

[tex]\bf y=-\cfrac{1}{4}x-\cfrac{10}{2}\implies y=-\cfrac{1}{4}x\stackrel{\stackrel{b}{\downarrow }}{\boxed{-5}}\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array}[/tex]

Answer:

B. y = 2/3x + 4

Step-by-step explanation:

the equation is Y = mx + b

m = slope

b = y-intercept

your answer is B. y = 2/3x + 4

Answer:

Step-by-step explanation:

It's B

The general equation of a slope intercept line is

y = mx + b

m = the slope

m = 2/3

b = the y intercept

b = (0,4)

So the equation is

y = 2/3 x + 4

ANSWER

[tex]y = - 4x + 8[/tex]

EXPLANATION

The given line passes through (1,4) and (3,-4).

The slope of this line is calculated using the formula:

[tex]m =\frac{y_2-y_1}{x_2-x_1} [/tex]

We substitute the points into the slope formula to get:

[tex]m = \frac{ - 4 - 4}{3 - 1} [/tex]

[tex] \implies \: m = \frac{ - 8}{2} [/tex]

[tex]m = - 4[/tex]

We substitute the first point and slope into the point-slope formula

[tex]y-y_1=m(x-x_1)[/tex]

This implies that

[tex]y - 4 = - 4(x - 1)[/tex]

We expand to get

[tex]y - 4 = - 4x + 4[/tex]

[tex]y = - 4x + 2/4+ 4[/tex]

[tex]y = - 4x + 8[/tex]

Answer:This is approximately 3.2 gallons. So the coordinate on this line would be (3.2, 12).

Step-by-step explanation: If gas costs $3.75 per gallon and Berto has $12, then he can purchase 12/3.75 gallons. This is approximately 3.2 gallons. So the coordinate on this line would be (3.2, 12).

Basically what this assignment sais is to write a function, input the data and write input and output as an ordered pair.

[tex]f(x)=3.75x[/tex]

Where f(x) equals y and 3.75 times x is cost of number of gallons x.

So we have:

[tex]

f(x)=12\Longrightarrow 12=3.75x \\

12=3.75x\Longrightarrow x=\dfrac{12}{3.75}=3.2

[/tex]

So the ordered pair is in a form of:

[tex](x, f(x))\Longleftrightarrow(x,y)[/tex]

We have x is 3.2 and y is 12. So the ordered pair is:

[tex]\boxed{(3.2, 12)}[/tex]

Hope this helps.

r3t40

Answer:15%

Step-by-step explanation:

Divide 20 by 4 then 3/4th are boys so take the answer and add it 3 times.

Given that 50% of the class are boys and 20% are blonde-haired, if there are three times as many blonde boys, the percentage of blonde boys in the class is 60%.

The question can be interpreted as looking for the percentage of boys with blonde hair in the entire class. We know that 50% of the class are boys and that there are three times as many boys that are blonde as the 20% that are generally blonde-haired. This means that 60% of the class are boys who have blonde hair.

We can calculate this by multiplying the total percent of blondes (20%) by 3, as we are told there are three times as many blonde boys. Hence, the percentage of blonde boys in the entire class is 60%.

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Answer:

225

Step-by-step explanation:

We can model this question with:

9 = 0.04x

x represents "what number."

0.04x = 9.

Divide 0.04 from both sides

0.04x ÷ 0.04 = 9 ÷ 0.04

9 ÷ 0.04 = 225.

Therefore, 9 is 4% of 225.

Answer:

225

Step-by-step explanation:

Is means equals and of means multiply

9 = 4% * W

Change to decimal form

9 = .04 * W

Divide each side by .04

9/.04 = .04W/.04

225 = W

[tex]4-2x \cdot 4x = 64\\-8x^2=60\\x^2=-\dfrac{15}{2}\\x\in\emptyset[/tex]

Answer:

y-2=4/3(x-2)

Step-by-step explanation:

Pick one coordinate and then plug the x value and the by value into the formula and then to find the slope and count up 4 and to the right 3.