Gina can trade empty bottles for money at the grocery store. She returned a few bottles worth $0.10 each and 6 bottles worth $0.05 each. The clerk paid Gina $0.80 for all of the bottles.
How many bottles worth $0.10 did Gina return?
A. 4
B. 5
c. 6
D. 8

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i don't have the answer rn but go to math papa. it shows the steps and the answer. hope this : )

step-by-step explanation:

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

60: 45 =12: 9 =4: 3 so the answer is 4: 3