Answer:
r =9
Step-by-step explanation:
7r-r=54
Combine like terms
6r = 54
6r/6 = 54/6
r =9
Answer:
x ≈ 8.1 units
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan72° = = ( multiply both sides by x )
x × tan72° = 25 ( divide both sides by tan72° )
x = ≈ 8.1 ( to the nearest tenth )
Answer:
28364.67
Step-by-step explanation:
28364.67 Is twenty eight thousand compared to two thousand
The number 108 as a fraction can be written 108/1.
Answer:
Grant's weekly allowance is $20.
Step-by-step explanation:
We know that Grant ended with $15. We can say that Grant's weekly allowance is x.
x/2 + 5 = 15
Now to solve:
x/2 + 5 - 5 = 15 - 5 (subtract 5 from both sides to isolate the x/2)
x/2 = 10
x/2 * 2 = 10 * 2 (multiply both sides by 2 to isolate the x)
x = 20
Grant's weekly allowance is $20.