First one simplifies to 2x + 6 = 2x + 7 which can't be true so this one has No Solution.
Same applies to the second equation ( 5x + 15 = 5x - 15) No solution
also the last one has no solution because it simplifies to 4x + 20 = 4x + 19
Answer:
120 inches
Step-by-step explanation:
8 times 15 is 120
Answer:
325.26
Step-by-step explanation:
that's the answer because you have to multiply the top
I have question do we have to do something to the bottom?
Answer:
![\large\boxed{3\sqrt7}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B3%5Csqrt7%7D)
Step-by-step explanation:
![\text{Geometric mean:}\\\\\underbrace{\sqrt[n]{a_1\cdot a_2\cdot a_3\cdot...\cdot a_n}}_n\\\\\sqrt{7\cdot9}=\sqrt{9}\cdot\sqty7=3\sqrt7](https://tex.z-dn.net/?f=%5Ctext%7BGeometric%20mean%3A%7D%5C%5C%5C%5C%5Cunderbrace%7B%5Csqrt%5Bn%5D%7Ba_1%5Ccdot%20a_2%5Ccdot%20a_3%5Ccdot...%5Ccdot%20a_n%7D%7D_n%5C%5C%5C%5C%5Csqrt%7B7%5Ccdot9%7D%3D%5Csqrt%7B9%7D%5Ccdot%5Csqty7%3D3%5Csqrt7)
Answer:
11 inches
Step-by-step explanation:
The area of a circle can be found using:
![a=\pi r^{2}](https://tex.z-dn.net/?f=a%3D%5Cpi%20r%5E%7B2%7D)
We already know that the area is 380, so we can substitute 380 in for a.
380=![\pi r^2](https://tex.z-dn.net/?f=%5Cpi%20r%5E2)
Now, we need to find the radius. To do this, we need to get r by itself
First, divide both sides by pi
![380/\pi =\pi r^2/\pi](https://tex.z-dn.net/?f=380%2F%5Cpi%20%3D%5Cpi%20r%5E2%2F%5Cpi)
120.95775675=r^2
Since r is being squared, we need to take the square root of both sides
![\sqrt{120.95775675}=\sqrt{r^2}](https://tex.z-dn.net/?f=%5Csqrt%7B120.95775675%7D%3D%5Csqrt%7Br%5E2%7D)
10.9980796846=r
If we round to nearest whole number, our radius is 11 inches