21x-9+63=180
21x+54=180
21x=126
x=6
The answer is C) y=-5/2x-3
Use the Pythagorean Theorem to solve for the third side. The third side must be the hypotenuse since the height (vertical leg) is 9, and the length (horizontal leg) is 5.
a² + b² = c², where a and b are the legs and c is the hypotenuse. Plug in 5 and 9 for a and b; solve for c.
5² + 9² = c² ⇒ 25 + 81 = c²
106 = c²
Square root both sides.
c = 10.3
Third side: 10.3
15% * 375 = 0.15*375 = 15*375/100=56.25
Answer:
B
Step-by-step explanation:
5.7 is five and 7 tenths and you keep moving up
