(x-9)(x+7)=0
x-9=0 or x+7=0
x=9 or x=-7
:)
Answer:
222.7 cm³ of paper to wrap this.
Step-by-step explanation:
The rectangular prism is SA=2(wl+hl+hw)
Where:
w=5 l=5 h=4
SA= 2((5*5)+(4*5)+(4*5))
SA=2(25+20+20)
SA=2(65)=130cm³
The square base pyramid is ![A= lw+l\sqrt{x} (w/2)^2+h^2+w +w\sqrt{x} (1/w)^2+h^2](https://tex.z-dn.net/?f=A%3D%20lw%2Bl%5Csqrt%7Bx%7D%20%28w%2F2%29%5E2%2Bh%5E2%2Bw%20%2Bw%5Csqrt%7Bx%7D%20%281%2Fw%29%5E2%2Bh%5E2)
![SA= 6*5+6*\sqrt{x} (5/2)^2+5^2+5*\sqrt{x} (6/2)^2](https://tex.z-dn.net/?f=SA%3D%206%2A5%2B6%2A%5Csqrt%7Bx%7D%20%285%2F2%29%5E2%2B5%5E2%2B5%2A%5Csqrt%7Bx%7D%20%286%2F2%29%5E2)
≈92.69578 cm³
Add the two together 130+92.70 =222.7 cm³
Answer:
(-3)^2
Step-by-step explanation:
You add 7 on both sides, giving you x^2 - 6x = 7
Then, take half of b, and square it. Giving you x^2 - 6x +(-3)^2 = 7
The answer will be (-3)^2 for this question, but this is not the full solution.
Hope this helped. Good luck on the rest!
For this question you can say:
-8 -11q = -9q +6
so now you can add +9q on both sides and +8 on both sides of the equation:
-11q + 9q = 8 + 6
-2q = 14
q = 14/-2
q = -7 :)))
I hope this is helpful
have a nice day