Answer:18.4
Step-by-step explanation:
Answer:$590
Step-by-step explanation:
500*6%=30
30*3=90
500+90=590
Answer:
No Solution.
Step-by-step explanation:
2x-4y=14
x=2y-2
----------------
2(2y-2)-4y=14
4y-4-4y=14
-4=14
no solution
Answer:
They can make 10 different groups of three.
Step-by-step explanation:
The order in which the people are in the car is not important, so we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

How many different groups of three can the five of them make?
Combinations of 3 from a set of 5. So

They can make 10 different groups of three.
Since

Is a perfect square, we can think of the "-6" at the end as a "+4-10" and we have

Which is the required form