To sew a garment, a seamstress uses 5.7 centimeters of thread for every 7.6 centimeters of fabric. a) if the seamstress uses 4.2 centimeters of thread, how much fabric is involved? b) if the seamstress is working with 21.2 centimeters of fabric, how many centimeters of thread is needed? c) explain how you found your answers and show your work.

Part a) of fabric

Part b) of thread

Step-by-step explanation:

we know that

A seamstress uses centimeters of thread for every centimeters of fabric

Part a)

by proportion

Find how much fabric is involved if the seamstress uses centimeters of thread

Part b)

by proportion

Find how many centimeters of thread is needed if the seamstress is working with centimeters of fabric

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:

step-by-step explanation: