Answer:
x=-5
Step-by-step explanation:
Combine like terms:
2x+4=-2x-16
4x=-20
Solve
x=-5
divide 187.50 by 12.5 to find hourly rate
187.50/12.50 = 15 dollars per hour
now divide 465 by 15 for number of hours
465/15 = 31 hours
double check by multiplying 31 by 15 ( 31 x 15 = 465)
She didn’t multiply -1/4 by 12 in order to get -1/4x + 3 = -1
which would change her answer, because then you have to subtract 3 from -1 and get -4. Then divide -1/4 & get 16. It changed to positive because of the division & multiplication rule with two negative numbers.
Hope this helps.
The two triangles with the given perimeter is attached .
Perimeter is the sum of all sides.
For the first triangle , sies are 2a,2a and b.
So the perimeter is
For the second triangle, sides are a,a, and 2a+b. Therefore perimeter is
So for both triangles, perimeter is
Hello!
First you find out the amount of balloons by adding them up
10 + 12 + 15 + 8 = 45
Then you add all the balloons that are not green
10 + 12 + 15 = 37
Then you put the amount of balloons that are not green over the total amount of balloons
The answer is 37/45
Hope this helps!
