The linear equation was solved using these steps. Linear equation: 1
3
(12x + 15) = 7

Step 1: 4x + 5 = 7

Step 2: 4x = 2

Step 3: x = 1
2

The property that was used in step 1 was the

The property that was used in step 2 was the

The property that was used in step 3 was the

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:

14

step-by-step explanation:

to find the perimeter, you add up all the lengths of the sides. in this case you would have to add up 18+22+40+80 which equals 160.