2 years ago

How many solutions does 15x+12y=18 have

Mathematics

1 answer:

dangina [55]2 years ago

8 0

Answer: 2 or more.

X and Y could be anything, so there are at least two answers

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A road rises 50 feet over a horizontal distance of 600 feet. What is the slope of the road?

Hatshy [7]

Answer:

1/12 (or 0.833)

Step-by-step explanation:

Recall that the definition of "slope" is the change in vertical distance divided by the change in the horizontal distance. (aka. rise ÷ run)

it is given that rise = 50 feet and the horizontal distance (i.,e "run") = 600feet

hence slope = rise / run = 50 / 600 = 1/12 (or 0.833)

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2 years ago

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What is the sum of (8y+2) + (7y+6) ?

MA_775_DIABLO [31]

Answer:

combine like terms

15y+ 8

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2 years ago

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Evaluate the following expression will give branliest 256 to the power of 5/8

Nana76 [90]

Answer:

Step-by-step explanation:

The formula needed to solve this question by hand is:

$x^{\frac{m}{n}} =\sqrt[n]{x^{m}}$

256^(5/8) = 8th root of 256^5

256^(5/8) = 8th root of 1280

256^(5/8) = 32

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2 years ago

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Which equation is the inverse of y = 2x^2 - 8?

evablogger [386]

Answer: A

Step-by-step explanation:

$y=2x^2-8$

1. Swap x and y.

$x=2y^2-8$

2. Solve for the new y.

Add 8

$x+8=2y^2$

Divide by 2.

$\frac{x+8}{2}=y^2$

Extract the square root.

$\sqrt{\frac{x+8}{2} }=y$

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3 years ago

Math Help PLZ!!!!!!!!!

VMariaS [17]

Answer: C

Step-by-step explanation:

f(x) = 2x + 1 ⇒ 2x + 1

- g(x) = -(x² - 7) ⇒ -x² + 7

(f-g)(x) = -x² + 2x + 8

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2 years ago