Put the diameter of the moon (2,149 miles) into scientific notation.* Format:_.
I 10
10^_miles (example: 5.147 x 10^7)

2.149 * 10^3

Step-by-step explanation:

The standard form of writing a scientific notation is expressed as;

A * 10*n

A is any integer between 1 and 10

n is any integer

Given the diameter of the moon = 2.149miles

Expressing in scientific notation;

2,149 = 2.149 * 10^3

Note that we shifted the decimal point 3 times to the back That's why the power is positive 3

22

step-by-step explanation:

22

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.