Answer:
A. (-7 -2)
Step-by-step explanation:
You can eliminate y by multiplying the first equation by 7 and subtracting 6 times the second equation:
7(-3x +6y) -6(5x +7y) = 7(9) -6(-49)
-21x +42y -30x -42y = 63 +294 . . . . eliminate parentheses
-51x = 357 . . . . . . . . collect terms
x = -7 . . . . . . . divide by -51. This matches answer choice A.
Answer:
question 13 = D
Step-by-step explanation:
because you do some math, open a calculator and boom, you have that.
3 tens is 3 * 10 = 30
9 ones is 9 * 1 = 9
30 + 9 = 39
Answer: 39
The answer is 6 because if the total length is 10 and part of the total length is 4, 10-4 is 6
Answer:
X <u>></u> 7
Step-by-step explanation:
X <u>></u> 7