Answer:
87.9
Step-by-step explanation:
Use a calculator or table to find the z-score that corresponds to 25%.
P(Z < z) = 0.25
z = -0.675
Now find the value that corresponds to that z score.
z = (x − μ) / σ
-0.675 = (x − 101.3) / 19.9
x = 87.9
Solve the radical equation. sqrt 25 – 40x = X – 10
1 answer:
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Number of stickers in a bad Number of stickers to be collected
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We need to buy 10 bags of crisps to have 30 stickers
Let p represent the number of bags to be bought
We need to collect 30 stickers and each bag has 3 stickers
3p = 30
↑ ↑
Number of stickers in a bad Number of stickers to be collected
p = 10
We need to buy 10 bags of crisps to have 30 stickers