Please help me thanks

The answer to your question is SA = 117.5 in²

Step-by-step explanation:

Data

s = 4 in

l = 9 in

n = 5

B = Pa/2

a= 2.75

Process

1.- Calculate B

P = 5 x 4

P = 20 in

-Substitution

B = 20 x 2.75/2

-Result

B = 27.5 in²

2.- Calculate 1/2sln

-Substitution

1/2(4)(9)5)

-Simplification

1/2(180)

-Result

90 in²

3.- Calculate SA

SA = 27.5 + 90

-Result

SA = 117.5 in²

idk

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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