X=7.
9x-7y=63
9x-7 x 0=63
9x - 0=63
9x=63
X=7.
Y=-9
9 x 0 -7y=63
Answer:
Step-by-step explanation:
- A. 36 × 6 × 6 × 6 = 6²⁺¹⁺¹⁺¹ = 6⁵ incorrect
- B. 125 × 125 = 5³ × 5³ = 5³⁺³= 5⁶ correct
- C. 6 × 5 incorrect
- D. 25 × 5 × 5 × 5 = 5² × 5 × 5 × 5 = 5²⁺¹⁺¹⁺¹ = 5⁵ incorrect
1 pound of coffee costs 6.95
3.4 pounds will cost 6.95 x 3.4 = 23.63
2 * 5 = 10
10 * .20 = 2
10 - 2 = 8
$8
