Find the perimeter of a rectangle with a length of 10m + 2 and a width of 5m. (A) 25m+7

(B) 50m+10

(C) 30m+4

(D) 25m+8

step-by-step explanation:

i am not sure sorry : c

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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step-by-step explanation:

what chart am i supposed to follow?