Answer:
5. 4.2
6. 100.7
7. 14.8
8. 0.1
9. 24.192
10. 0.0996
11. 213
12. 0.156
Step-by-step explanation:
Rise=+3
Run=+2
Slope=rise/run=3/2
equation:
y=3/2 x
Width -
x ft.
Length -
(x+6)ft.
x(x+6)=315
x²+6x-315=0
a=1, b=6, c=-315
D=b²-4ac=36+4*1*315=1296, √D=√1296=36
![x = \frac{-b+/- \sqrt{D} }{2a} \\ \\ x= \frac{-6+/-36}{2} \\ \\ x=15, x=-21](https://tex.z-dn.net/?f=%20%20x%20%3D%20%20%20%5Cfrac%7B-b%2B%2F-%20%5Csqrt%7BD%7D%20%7D%7B2a%7D%20%0A%5C%5C%20%5C%5C%20x%3D%20%5Cfrac%7B-6%2B%2F-36%7D%7B2%7D%20%0A%5C%5C%20%5C%5C%20x%3D15%2C%20x%3D-21)
For the width we can use only positive number.
The width =
15 ft.
The length =15+6=
21 ft.
Check :
Area =15*21=315 ft²
The answer would be -10 if you want me to explain tell me to <span />
1) 2m - 16 = 2m + 4
2m - 2m = 4 + 16
0 = 20 (no solution)
2) -4(r + 2) = 4(2 - 2r)
-(r + 2) = 2 - 2r
-r - 2 = 2 - 2r
-r + 2r = 2 + 2
r = 4
3) 12(5 + 2y) = 4y - (6 - 9y)
60 + 24y = 4y - 6 + 9y
60 + 24y = 13y - 6
24y - 13y = -6 - 60
11y = -66
y = -6