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3 years ago

FIRST-PERSON BRAINLIEST Which algebraic expression represents “the sum of a number and 9”?

Mathematics

1 answer:

Dahasolnce [82]3 years ago

7 0

Answer:

Step-by-step explanation:

The sum of a number and 9 is adding of any variable to 9.

E.g the sum of 8 and 7

8+7=15

We can also have the sum of two unknown numbers, we can let the first number be x and the second number be y, then the sum of the two unknown will be (x+y).

So, let apply this to the question

The sum of a number and 9, since we don't the number, let the number be n, then the sum of the number and 9 will be (n+9)

Then the correct option is B which is n+9

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I need help to solve this please -6 - 8x = -2(4x + 3)

OverLord2011 [107]

Answer:

infinite solutions, true for all x

Step-by-step explanation:

-6 - 8x = -2(4x + 3)

Distribute

-6-8x =-8x-6

Add 8x to each side

-6-8x+8x = -8x-6+8x

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bekas [8.4K]

Look at the picture.

Angles KJL and SRT are Corresponding angles. JK is parallel to RS. Therefore

m∠KJL = m∠SRT

<h3>A. The slope of JL is equal to the slope of RT.</h3><h3 />

Other method.

Calculate the slope.

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

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