Answer:
D. 13 1/2
Step-by-step explanation:
2/3 x -2 = 7
2/3 x -2 + 2 = 7 + 2
2/3 x = 9
x = 9 (3/2)
x = 27/2
x = 13 1/2
Answer: 
which is choice C
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Explanation:
This is a 30-60-90 triangle. The short leg is 5, as it's opposite the smallest angle. The long leg is 
times that of the short leg.
Start at 5 on the y axis then go down four and over 1
Let the first number be x and decide number be y
therefore x+y = -42
also. x-y = 52 using the process of elimination
we get: 2x = 10
we divide both sides by 2, which gives us x=5
then we substitute the value of x in the first equation
that gives us. 5+y = -42
thus. y = -47
