Answer:
The rate is 47.5 miles per hour :D
Step-by-step explanation:
Surface area = 2(12*12+15*12+15*12) = 1008
1008 * 4 = 4032
Answer:
Amount invested at 8% is $9000 and amount invested at 18% is $21000.
Step-by-step explanation:
Let amount invested at 8% be x.
Let amount invested at 18% be y.
We get the 1st equation as:
........(1)
We get the second equation as:

=> 
or getting rid of the decimal by multiplying by 100 on both sides.
........(2)
Multiplying (1) by 8 and subtracting from (2) we get
So, y = 21000
And 

So, x = 9000
Therefore, amount invested at 8% is $9000 and amount invested at 18% is $21000.
5. There’s your answer buddy
Answer:
Whole Number : 6
Integers: -6 and 6
Rational Number: -6.0 and -6/1
Irrational Number: -Infinity or -0