There are 3 forks in the silverware drawer. there are 4 more knives than forks, and there are twice as many spoons as knives. how many pieces of silverware are there in all?

There are 24 pieces of silverware in all.

Step-by-step explanation:

3+ 7 + 14 = 24

3 forks

There are 4 more knives than forks - 7 knives

There are twice as many spoons as knives - 7.2 = 14

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:

the first option is the answer.