A
given the 2 equations
2x + y = - 2 → (1)
x + y = 5 → (2)
subtract (2) from (1) term by term to eliminate y
(2x - x ) + (y - y ) = (- 2 - 5 )
x + 0 = - 7 ⇒ x = - 7
substitute x = - 7 in either of the 2 equations and solve for y
(2) : - 7 + y = 5 ( add 7 to both sides )
y = 5 + 7 = 12 → A
Answer:
The Answer is that Orchestra seats were $15 and Balcony seats were $9.
Step-by-step explanation:
400(x+6) + 250x = 8250
400x + 2400 + 250x = 8250
650x + 2400 = 8250
650x = 5850
x = 9
Proof:
400(15) + 250(9) = 8250
6000 + 2250 = $8,250
Keep your mom, you only have one. But anyway;
Use the Pythagorean Theorem: A^2 + B^2 = C^2
12^2 + 21^2 = C^2
144 + 441 = C^2
585 = C^2
square root of 585 = approximately 24.2
Cos (x) = adj/hyp
cos (x) = 13/25
x = cos⁻¹(13/25)
x= 58.7° (nearest tenth)
First you gotta do rise over run. then once you do that, you should get your answer. which is x=-4
