Answer:
The answer to your question is
x = -2 and y = 10 or x = 10 and y = -2
Step-by-step explanation:
x + y = 8 (1) from (1) x = 8 - y
xy = - 20 (2)
Solve them by substitution
(8 - y) y = - 20
8y - y² = -20
y² - 8y - 20 = 0
( y - 10) (y + 2) = 0
y - 10 = 0 and y + 2 = 0
<u> y1 = 10 </u> <u>y2 = -2</u>
x1 = 8 - 10 x2 = 8 - -2
<u>x1 = -2</u> <u> x2 = 10</u>
15(17+y) <300
15*17 = 255
255 + 15y < 300
15y < 300-255
15Y < 45
y = 45/15
y = 3
so most you can spend is $3 per pair of socks
Answer:
-30
Step-by-step explanation:
24 - 54 = -30.
This is the simpliest way to do.
First: 54 - 24 is 30.
Second: see if the first number is bigger than the second number, if it is add a negative to it.
Third: You got the answer! -30!
Answer: 22.360679775
Step-by-step explanation: thats the answer
6. B
7. C
8. B
9. D
10. C
11. B
12. 7
Hope I could help! You got numbers 6,8, and 9 wrong, but everything else correct so not bad!