Answer:
.
Step-by-step explanation:
.
Hi there!
First we need to work out the parenthesis, which can for instance be done using rainbow technique.
Now subtract 3 from both sides.
And finally add 3x to both sides.
The 4th answer choice is correct.
The interior angles of a triangle add up to 180 degrees, meaning we can make an equation.
Hope this helps.
頑張って!
Answer:
11 nickels, 15 dimes, 22 quarters
Step-by-step explanation:
number of nickels = x
number of dimes = x+4
number of quarters = 2x
- - - - - -
total of nickels = 5x cents
total of dimes = 10x + 40 cents
total of quarters = 50x cents
- - - - - -
755 = 5x + 10x + 40 + 50x
755 = 65x + 40
715 = 65x
x = 11
x+4 = 15
2x = 22