Answer:
x=-1±4√31/3 ft is the height
Step-by-step explanation:
let the height be x ft.
then the length would be 3x+2
area = L*H= x(3x+2)
165=3x²+2x
0= 3x²+2x -165
dividing the whole equation by 3
0=x²+2x/3-55
(x)²+2(x)(1/3) +(1/3)² -55 -(1/9)=0
(x+1/3)²- 495-1/9=0
(x+1/3)²= 496/9
taking square root on both sides
(x+1/3)= ±4√31/3
x= ±4√31/3-1/3
x=-1±4√31/3 ft is the height
On graph c x= -3 I believe
Let h = weight of the hardcover book.
Let p = weight of the paperback book.
<span>"The hardcover version of a book weighs twice as much as its paperback version."
h = 2p
"</span><span>The hardcover book and the paperback together weigh 5.3 pounds.</span><span>"
h + p = 5.3
The equations are:
h = 2p
h + p = 5.3
</span>
Answer:
Below in bold
Step-by-step explanation:
b = 40.
d = 70
From the diagram:
a = c (because they are both opposite the equal angles), so:
2a + 2c + 2*40 + 2*70 = 360
But a = c so:
2a + 2a + 80 + 140 = 360
4a + 80 + 140 = 360
4a = 360 - 220 = 140
a = 35
so c = 35.
Answer:
-5/6
Step-by-step explanation:
Well that would be -1/6+(-4/6) which is actually -1/6-4/6 which -5/6
Hope this helps :D Please mark brainliest if correct
