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2 years ago

-6x+6y=9 (1/2,2) please helppppp

Mathematics

1 answer:

morpeh [17]2 years ago

7 0

Answer:

Not a solution.

Step-by-step explanation:

$-6x + 6y = - 9\\\rule{150}{0.5}\\-6(\frac{1}{2}) + 6(2) = -9\\\\-3 + 12 = -9\\\\9 =-9$

The final result is a contradiction. It is not a solution to the equation, and therefore, will not be on the line.

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If f(x) = 5x + 4, which of the following is the inverse of Ax)?

Levart [38]

Answer:

$f^{-1}$ (x) = $\frac{x-4}{5}$

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = 5x + 4 ( subtract 4 from both sides )

y - 4 = 5x ( divide both sides by 5 )

$\frac{y-4}{5}$ = x

change x to $f^{-1}$ (x) and y back to x, thus

$f^{-1}$ (x) = $\frac{x-4}{5}$

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3 years ago

A driveway has an area of 96 square feet. The width of the driveway is 8 feet.

Mrrafil [7]

Answer:

12 feet

Step-by-step explanation:

A driveway is rectangular in shape.

Therefore we can calculate the area using the formula;

$A = L \times W$

From the question;

The area,A=96 feet square

The width, W=8 feet

We substitute this values into the formula to find the length, L.

This implies that

$96 =L \times 8$

Dividing through by 8.

$\implies \frac{96}{8}= \frac{L \times 8}{8}$

$\implies L = 12$

Hence,the length of the driveway is 12 feet.

4 0

3 years ago

If the diagonal path is 750 feet long and the width of the park is 450 feet, what is the length, in feet, of the park?

jarptica [38.1K]

This problem can be looked at like a right triangle, where the hypotenuse is 750 and one leg is 450. Thus 450^2 + the length of the park^2 = 750 ^2.

202500 + the length of the park^2 = 562500

the length of the park^2 = 360000

the length of the park = 600

Hope it helps <3

8 0

3 years ago

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the weight of a person of average build varies directly with the cube of that person's height. use a person 6 feet tall who weig

malfutka [58]

Answer:

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Step-by-step explanation:

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3 years ago

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snow_lady [41]

Answer:

IT'S D

Step-by-step explanation:

LOOK AT THE PATTERN AND YOU WILL UNDERSTAND.

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3 years ago

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