B-(-7)= -1
First negative multiply by negative is POSITIVE.
So: B+7= -1
Subtract 7 from both sides
B= -7-1
B= -8.
Answer: -8.
To Check Answer: Plug in the variable of B in the original equation.
So: -8-(-7)= -1
-8+7= -1
-1= -1
If the Solution works out the answer is right.
Total number of possible outcomes of throwing two dice = 6×6 = 36
Number of outcomes of getting 9 i.e, (3+6),(4+5),(5+4),(6+3) = 4

Base x Height would be the formula of a rectangular prisim
Answer: Median 38 / Mean 24.5
Step-by-step explanation:
The median is 38
and
The mean is 24.5
To find the median just find the number in the middle of an odd set
but if it happens to be an even number add the 2 middle numbers together and divide them by 2
To find the Mean add all of the numbers and divide them by the number of sets ( in this instance its 4 )