Answer:

Step-by-step explanation:
All we have to do is use the addition property of equality to isolate x.

Answer: x = -7
Step-by-step explanation:
2.5x+10=x-0.5
Collect like terms
2.5x-x= -0.5 -10
1.5x= -10.5
X= -10.5/1.5
X= -7
The answer is D) Marty gets ten dollars for his allowance and then spends ten dollars at the movies
because $10-$10=0
Answer:

Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle ABC of the figure, the tangent of angle C is equal to divide the opposite side to angle C (side AB) by the adjacent side to angle C (side BC)
so

substitute the given values

simplify
