Elimination means you’re adding/subtracting the equations such that one of the variables is cancelled out. You’re left with one equation and one variable which can then be solved.
In this case you can add the two equations so that the terms with x cancel:
3x + 9y = -42
-3x + 2y = -2
———————
0 + 11y = -44
y = -4
Then plug y back into either original equation to solve for x. I’ll use the first:
3x + 9(-4) = -42
3x - 36 = -42
3x = -6
x = -2
We just have to group the like terms together. So there are 4 nines and 2 sevens.
That would make it; 9^4 x 7^2
9 to the power of 4 multiplied by 7 to the power of 2(the second power).
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Answer:
180
Step-by-step explanation:
2ft=24in
24 x 15=360
360÷2=180
Answer:
D
Step-by-step explanation:
D is the correct answer
