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soldier1979 [14.2K]

2 years ago

6

What is the value of X in the equation 8x-2y=48, when y=4

2 answers:

sineoko [7]2 years ago

8 0

What is the value of X in the equation 8x-2y=48, when y=4

the answer in your equation is x=7

Verdich [7]2 years ago

5 0

Answer:

7

Step-by-step explanation:

to find the value of of x. you have to substitute 4 into y and solve the equation for x. 8x minus 2 times 4 = 48. 2 times 4 is 8. your left with 8x-8=48. next you add 8 to both sides and are left with 8x=56. next 8x divided by 8 is x. and 56 divided by 8 is 7. So x=7.

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Write a slope intercept equation for a line that passes through (-2,5) and (2,-7)

wlad13 [49]

Slope-intercept form: y = mx + b, where m is the slope and b is the y-intercept.

First, find slope using the given coordinates. Formula for slope: y₁ - y₂ / x₁ - x₂.

Our coordinates are (-2, 5) and (2, -7). Plug them in and simplify.

5 - (-7) / -2 - 2

5 + 7 / -4

12/-4

-3

The slope is -3. The equation becomes y = -3x + b.

To find b, plug an (x, y) coordinate on the line in for x and y in the equation and solve. I'll use (-2, 5)

y = -3x + b

5 = -3(-2) + b

5 = 6 + b

-1 = b

The y-intercept is (0, -1). The equation can now be completed!

<h3>Answer:</h3>

y = -3x - 1

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3 years ago

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Fittoniya [83]

Your answer is correct

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3 years ago

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just olya [345]

Answer:

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Step-by-step explanation:

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3 years ago

A camera has a listed price of $722.99 before tax. If the sales tax rate is 9.75%, find the total cost of the camera with sales

marusya05 [52]

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3 years ago

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If y is a positive integer, for how many different values of y is RootIndex 3 StartRoot StartFraction 144 Over y EndFraction End

loris [4]

Answer:

2 possible values

Step-by-step explanation:

The given expression is:

$\sqrt[3]{\frac{144}{y} }$

In order for this to result in a whole number, 144/y must be a perfect cube, the possible perfect cubes (under 144) are:

1, 8, 27, 64, 125

The values of y that would result in those numbers are:

$y=\frac{144}{1}=144 \\y=\frac{144}{8}=18 \\y=\frac{144}{27}=5.333\\y=\frac{144}{64}=2.25\\y=\frac{144}{125}=1.152$

Only two values of y are integers, therefore, there are only two possible values of y for which the given expression results in a whole number.

7 0

3 years ago

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