Yao Xin puts 3/10 liters of potting soil in each pot for planting flowers. She has 5 2/3 liters of potting soil. How many pots can Yao Xin fill?

18 8/9 pots

Step-by-step explanation:

Total potting soil = 5 2/3 liters

Potting soil per pot = 3/10 liters

How many pots can Yao Xin fill?

Number of pots Yao Xin can fill = Total potting soil / Potting soil per pot

= 5 2/3 liters ÷ 3/10 liters

= 17/3 ÷ 3/10

= 17/3 × 10/3

= (17*10) / (3*3)

= 170/9

= 18 8/9

Number of pots Yao Xin can fill = 18 8/9 pots

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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