2 years ago

WILL MARK BRAINLIEST!!! Can someone help me wit des two questions?

1 answer:

7 0

Answer:

The answer to the first question is B.) The student should have subtracted the 4 first, instead of adding, because it is positive originally. And the answer to the second one is D.) Distribute the -2.

Step-by-step explanation:

Hope this helps! :)

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What slope would make the lines parallel? y = 1/2x - 1 y = / x + 2

gizmo_the_mogwai [7]

If an equation has the same slope it will always be parallel so which y=1/2x-1 then y=1/2x+2

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2 years ago

Warm Up

katrin [286]

Given the slope m and a point (a,b) of a line, its equation is given by

$y-b=m(x-a)$

In your case, a = -4, b = 7 and m=1/2, so we have

$y-7=\dfrac{1}{2}(x+4) \iff y=\dfrac{x}{2}+2+7\iff y=\dfrac{x}{2}+9$

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3 years ago

What number must be added to the expression below to complete the square?

stiv31 [10]

D. 1/4

Explanation:

a perfect square is written in the form

$(x+a)^2 = x^2 + 2ax +a^2$ (1)

In our problem, we have this perfect square:

$x^2 - x + C$ (2)

with C being unknown. However, by comparing (1) and (2), we know that

$2a=-1$

So, we find

$a=-\frac{1}{2}$

and therefore, the missing term must be

$a^2 = \frac{1}{4}$

so the complete square is

$x^2 -x +\frac{1}{4}$

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2 years ago

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What is the sum of the first 10 terms in this geometric sequence? 3,-6,12,-24

lana [24]

3,-6,12,-24,48,-96,192,-384,768,-1536

sum:
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3 years ago

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Answer:

11 then Joann would have $2 left over.

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