PLEASE I REALLY NEED HELP PLEASE HELP ME THANKS !

1 answer:

7 0

In order for every book to be the same price they would have to be $9. But his cost 13. So I would subtract. 27-13=14. So he has $14 left. He still has to buy 2 more books so each of his sisters have a book. So he would have $7 to spend on each of them. Your answer would be yes he can spend $5 on each additional book.

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Line n passes through the points (-3,-7.5) and (2,-5). Thalia determined that the equation of the line n is y=0.5x. Explain the

yKpoI14uk [10]

<h3>The error is -6 </h3>

Step-by-step explanation:

If a line passes through the points $(x_1,y_1)$ and $(x_2,y_2)$

Then the equation of line is

$\frac{x- x_1}{x_1-x_2} =\frac{y-y_1}{y_1-y_2}$

Here given points are (-3,-7.5) and (2,-5)

Then the equation of the line is

$\frac{x+3}{-3-2} =\frac{y+7.5}{-7.5+5}$

⇔ $\frac{x+3}{-5} =\frac{y+7.5}{-2.5}$

⇔2.5(x+3) = 5(y+7.5)

⇔(x+3)= 2(y+7.5)

⇔x+ 3 = 2y +15

⇔2y = x+3-15

⇔y = $\frac{x-12}{2}$

⇔y = 0.5 x -6

The error is -6

5 0

3 years ago

Factor 72y+108z to identify the equivalent expressions.<br><br> Choose 2 answers

Diano4ka-milaya [45]

Answer:

its either B,C, OR D, because if you add the numbers inside the parenthesis and times it by the number in front of the : ( ), then you get 180 and that's what the number is that you should get. From Jacob in middle school in Florida.

Step-by-step explanation:

Where (because) is, to the end of the whole sentence is the explanation. thank you for understanding if you do

just got it wrong and the answers turn out to be B,and D.

5 0

3 years ago

How can u tell if a ratio is proportional

kirza4 [7]

Answer:

Ratios are usually proportional if they are the same or have the same relationship.

Step-by-step explanation:

Like: you have 2 fractions that reduce and come out the same they are proportional.

Hope my answer has helped you!