Solve for ttt.
2(t+1) = 102(t+1)=10

2(t+1) = 102(t+1)=10

distribuite 2t+2=10

-8 2t=8

t=4

t=4

Step-by-step explanation:

you can pick which equation you want to do, i am picking the first one. 2(t+1)=10. first we simply the equation, we do this by multiplying the number outside of the parenthesis, 2, by t and 1. 2*t=2t, and 2*1 = 2, so he equation we have to solve is 2t+2=10. we can subtract 2 from the 2, and subtract 2 from the ten, so our equation is no 2t=8, 2* what equals 8, we know that 2*4=8, so t=4

x + 4/7

step-by-step explanation:

use cymath

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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