Answer:
the first one and the third one
Step-by-step explanation:
5(3)-(-3)
15- (-3)
15+3 = 18
Answer:
-33
Step-by-step explanation:



· 
(-33)
Step-by-step explanation:
0.6x- 1.2x = 6
-0.6x = 6
x = 6/0.6
x = -10
x = 6
Explanation:
use the pythagorean theorem which is <u>a^2 + b^2 = c^2</u>. 8 goes in either the a or b position and 10 is the longest side so it will go in the c position.