Solve the given system of equations.
1 answer:
The given equations are:
1) 2y = -x + 9
⇒ x = 9-2y
2) 3x - 6y = -15
⇒3x = 6y - 15
x = 2y - 5
Equating the values of x, we get:
9 - 2y = 2y - 5
9 + 5 = 4y
14 = 4y
y = 3.5
Using this value of y in equation 1 we get:
x = 9 - 2(3.5) = 2
So, the solution set is (2, 3.5)
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153 ways.
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The answer is the number of combinations of 2 from 18
= 18! / 2! (18-2)!
= 18! / 2! 16!
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A because it is 3 out of 4
3a - 5(a - 2) = 34
Distribute -5 inside the parentheses
3a - 5a + 10 = 34
Combine like terms
-2a + 10 = 34
Subtract 10 from both sides
-2a = 24
Divide both sides by -2
a = -12
Answer:
Answer is D
Step-by-step explanation:
