2.8 is the andwer because when you divide 8.40 divide 3 it is equal to 2.8
Answer: 60
Step-by-step explanation: if you count the length and the width and multiply them you will get your answer, i did 15 (amount of units going down) and 8 (amount of unites going sideways) and multiplied them, 15 x 8 = 120 then half of that is 60
Answer:
Step-by-step explanation:
Make sure they have a common denominator. To do so, you must find a number the both have in come. Here, the number they have in common is 20.
What times 4 equals 20? 5. Whatever you do to the denominator you must do to the numerator.
× 
= 
Now you have 
= 
Then you can simplify to by dividing it by 
Answer:
455.
Step-by-step explanation:
Yes. You require the number of combinations of 3 from 15.
15C3
The formula for this is 15! / 12! 3! or you can do itr as follows
15C3 = 15*14*13/3*2*1
= 5*7*13
= 35*13
= 455.
Let M = #miles driven
Plan 1: .50M + 70 = total cost
Plan 2 .70M = total cost
To know how far she would drive to have an equal cost for either plan just set the equations equal to each other
.70M = .50M + 70
subtract .50M from both sides
.20M = 70
M = 70/.20 = 350 miles
Check the answser:
Plan 1: .50(350) + 70 = 175 + 70 = $245
Plan 2: .7(350) = $245
they are equal so our answer checks as correct
