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natka813 [3]
3 years ago
11

sally and martha had the same number postcards. after sally sold 18 of her postcards, martha had 4 times as many postcards as sa

lly. how many postcards did each girl have to begin with?
Mathematics
1 answer:
Lyrx [107]3 years ago
8 0
18 times 4 = 72 Both started with 72 Martha sold more
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X = 5; 2(5) - 1 = 9. 4(9) = 36
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Write a point slope equation for -5/7 using the coordinates (6,2)
sleet_krkn [62]

Answer:

(13, -3)

Step-by-step explanation:

slope = -5/7

(6,2)  

m = ( y2 - y1) / ( x2 - x1 )

-5/7 = ( y2 - 2) / ( x2 - 6 )

   

    -5 = y2 -2

        +2        +2

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Check answer again by log them in:

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m = ( -3 - 2 ) / ( 13 - 6 )

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I hope this helps!

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What is 4 5/13 as a decimal rounded to the nearest tenth
MAXImum [283]

Answer:

4.4

Step-by-step explanation:

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5 0
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balandron [24]

Given:

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Therefore, the earning per hour is $12.50.

8 0
3 years ago
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