Answer:
26
Step-by-step explanation:
22*0.2=4.4
22+4.4=26.4
when you round you will get 26
(you should probably ask your teacher which way to round.)
<em><u>The number 0.000000016 is expressed in scientific notation is:</u></em>

<em><u>Solution:</u></em>
Given that,
Charlie learns that a computer processor can perform one command in approximately 0.000000016 nanoseconds
We have to express in scientific notation
<em><u>Step 1:</u></em>
Given number is:
0.000000016
Move the decimal point in 0.000000016 until there is only one non-zero digit to the left of the decimal point
Here,
Move the decimal 8 places to the right to get 1.6
We have moved the decimal to left, therefore, exponent is negative

Thus the given number is expressed in scientific notation
Answer:
2.50
Step-by-step explanation:
30% of 25 is 7.50 take that away from 25 gives you 17.50 take that away from 20 gives you 2.50
The answer is 126 because you multiply 6 times 4 which equals 24 and subtract that from 150 so 150-24 = 126