EXPLANATION:
To get the solution of the simultaneous equation, using the elimination method:
We will have the following steps:
Step 1:
Write the two equations:

Step2: Subtract the two equations:

Step 3: Simplify the expression

Step 4: Substitute x=-2 into the formula:

Therefore, the answer is

Thus,
Option B is correct
Answer:
a=10
b=37
Step-by-step explanation:
a+5 is equal to the opposite line, 15. 10+5=15 therefore, a must equate to 10
3b is the same angle as 111 therefore 3*b has to equate to 111. 111 divided by 3 equals 37. B has to then equate to 37 to make the proper angle.
Hope my explanation wasn't too confusing, and hope this helps! Good luck!!!
Use the formula 4/3 x pi x r^3 with R being 9
You get 3053.6
6:15 to 7:15 = $12 for the hour
7:15 to 7:45 Is a half hour = $6
So total $12 + $6 = $18
The answer appears to be 48