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bonufazy [111]
2 years ago
5

Step 1 5x- y= 4

Mathematics
1 answer:
valkas [14]2 years ago
5 0

Answer: C, In Step 2 the expression for y should be subsituted in the other equation.

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3 years ago
Mr. Williams trains a group of student athletes. He wants to know how they are improving in the number of push-ups they can do.
Dima020 [189]

Answer:

7.5 more push-ups

Step-by-step explanation:

From the dot plot attached :

Last month mean :

Σfx/Σf

Σfx = [(10*2)+(15*2)+(25*3)+(35*1)] = 160

Σf = (2 + 2 + 3 + 1) = 8

Mean = 160 / 8 = 20

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2 years ago
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