What is the value of 4x 3+4x when x=4

the answer is 64

Step-by-step explanation:

The answer would be 64 because you can use the process of PEMDAS.

Parenthesis

Exponents

Multiplication

Division

Addition

Subtraction

using PEMDAS with this equation means you do 4 times x ( x=4) for the first part which equals 16. Then do that process again because that equation comes up twice once at the front of the equation once at the end. then you multiply 16 times 3 which equals 48. Then you add the 16 from the end that you saved earlier.

false

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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