Answer:
Fred is 28 yrs old. Nathalie is 12yrs old
Step-by-step explanation:
Let Nathalie's age be x
Let Fred's age be a
x+a=40 yrs•••••1
4x+a=76yrs•••••2
a=40-x
Substitute a for 40-x in equation (2)
4x+40-x=76
3x=76-40
3x=36
x=12
a=40-12
a=28
Answer:
108 dollars
Step-by-step explanation:
First, let's convert 6% to a decimal.
We get 0.06 because we multiplied (or divided by 100) it by 1/100.
Now, let's do 0.06 * 300 to get interest on one year. This equals to 18$
Let's now do 18 * 6 to get
108 dollars
The answer to 6 is C)
The answer to 7 is A)
When you divide, you multiply by the other fraction’s reciprocal
= 3/7 * 3/2 = 9/14
Answer: 9/14
Answer:
10.5 seconds.
Step-by-step explanation:
Remember that this is an estimate. It is meant for you to do in your head. It is not meant for Google or a calculator.
100 meters is 1/2 of 200 meters.
100 meters time is roughly 1/2 that for 200 meters.
21 seconds * 1/2 = 10.5 seconds.
