Answer:
x = -4; y = -3
Step-by-step explanation:
2x - 5y = 7
3x - y = -9
Rewrite top equation. Multiply both sides of bottom equation by -5. Add equations. This eliminates y, and we solve for x.
2x - 5y = 7
(+) -15x + 5y = 45
----------------------------
-13x = 52
Divide both sides by -13.
x = -4
Substitute -4 for x in the first original equation and solve for y.
2x - 5y = 7
2(-4) - 5y = 7
-8 - 5y = 7
-5y = 15
y = -3
Answer: x = -4; y = -3
-5 =
Step-by-step explanation:
Perimeter of a square = 4 × L
L = Length of a side of the pond = 30m
Perimeter = 4 × L = 4 × 30 = 120m = 12,000 cm
Pace = 60cm
Number of paces = 12,000/60 = 200 paces
9.6 is less than the square root of 96. The square root of 96 is roughly 9.8
7 & 8/10 or 78/10 ( which is the same thing)