Answer:
<h2>20</h2>
Step-by-step explanation:
Well here : 5 times 9 = 45 and 7 times 7 = 49 so it would be 45/49!
1.no should b 8x + 20
2.no should be 21x + 14
3.yes
3.yes
Answer:
First image: (6, -1)
2nd image: y = 63
Explanation:
1)
2x + y = 11
1/2x - 5y = 8
y = -2x + 11
1/2x - 5(-2x + 11) = 8
1/2x + 10x - 55 = 8
10.5x - 55 = 8
10.5x = 63
x = 6
2x + y = 11
2(6) + y = 11
12 + y = 11
y = -1
(x , y) = (6, -1)
2)
1/4(8y - 4.8) = 2 (0.9y + 5.4) + 3/5
2y - 1.2 = 1.8y + 10.8 + 0.6
0.2y - 1.2 = 11.4
0.2y = 12.6
y = 63
Answer:
A
Step-by-step explanation:
7 and -7 are the opposite on the number line
