So firstly, what two terms have a product of 8x^2 and a sum of 9x? That would be x and 8x. Replace 9x with x + 8x: ![x^2+x+8x+8=0](https://tex.z-dn.net/?f=%20x%5E2%2Bx%2B8x%2B8%3D0%20)
Next, factor x^2 + x and 8x + 8 separately. Make sure that they have the same quantity on the inside: ![x(x+1)+8(x+1)=0](https://tex.z-dn.net/?f=%20x%28x%2B1%29%2B8%28x%2B1%29%3D0%20)
Now you can rewrite the equation as ![(x+8)(x+1)=0](https://tex.z-dn.net/?f=%20%28x%2B8%29%28x%2B1%29%3D0%20)
Now using zero product property, solve for x:
![x+8=0\\ x=-8\\ \\ x+1=0\\ x=-1](https://tex.z-dn.net/?f=%20x%2B8%3D0%5C%5C%20x%3D-8%5C%5C%20%5C%5C%20x%2B1%3D0%5C%5C%20x%3D-1%20)
<u>In short, the solutions are {-1,-8}, or C.</u>
Answer: 27 feet per second
Step-by-step explanation:
A submarine dives 378 in 14 seconds.
So to find the number of feet a submarine dives per second, divide 378 by 14.
So your answer is 27 feet per second.
The answer is 7x-3 if you add like terms which are 4x, 2x, and x then take 2, 3, -2 and subtract from each other
Answer:
the answer is 12.7333333
Step-by-step explanation:
Since the third power of ten is
![10^{3}](https://tex.z-dn.net/?f=%2010%5E%7B3%7D%20)
, then to solve this, you will need to write,
![8* 10^{3} =8000](https://tex.z-dn.net/?f=8%2A%2010%5E%7B3%7D%20%3D8000)
It equals 8000, because there are three 10 multiplied to 8, so three 0's are added to the tail of 8.