Answer:
B
Step-by-step explanation:
Given the 2 equations
y = 2x - 3 → (1)
y - 9 = - x → (2)
Substitute y = 2x - 3 into (2)
2x - 3 - 9 = - x
2x - 12 = - x ( add x to both sides )
3x - 12 = 0 ( add 12 to both sides )
3x = 12 ( divide both sides by 3 )
x = 4
Substitute x = 4 into either of the 2 equations and evaluate for y
Substituting into (1)
y = 2(4) - 3 = 8 - 3 = 5
Solution is (4, 5 ) → B
Answer:
<h2><u><em>
y = 3</em></u></h2>
Step-by-step explanation:
2 over 6 = Y over 9 Fraction equation is required
2/6 = y/9
y = 2/6 * 9
y = 3
check
2/6 = 3/9
1/3 = 1/3
the answer is good
Answer:
D
Step-by-step explanation:
6x7x4= 168
1. 30x-2=1x+1
28x=2x
14=x
Answer:
20
Step-by-step explanation: