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Lera25 [3.4K]
4 years ago
13

PLEASE I REALLY NEED HELP PLEASE HELP ME THANKS !

Mathematics
1 answer:
QveST [7]4 years ago
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!

4 0
3 years ago
Read 2 more answers
Which point is on the line y = -2x + 3?<br><br> (-2, -1)<br> (3, 3)<br> (3, -3)<br> (-3, -9)
xenn [34]
I think the answer is (3,3)

5 0
3 years ago
"Last week you sold 30, 45, 50, 75, and 80 units each day of the week, in that order. On average, how many units did you sell pe
Ainat [17]

Answer:

56

Step-by-step explanation:

Average = sum/count

sum = 30 + 45 + 50 + 75 + 80

sum = 280

Count = 5

Average = 280/5

Average = 56

4 0
3 years ago
Read 2 more answers
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