Answer:
(b) as marked
Step-by-step explanation:
Subtract r, multiply by u^2/(-k-y-r), and take the square root.
![\dfrac{m}{u^2}+r=-k-y\qquad\text{given}\\\\\dfrac{m}{u^2}=-k-y-r\qquad\text{subtract $r$}\\\\\dfrac{m}{-k-y-r}=u^2\qquad\text{multiply by $\dfrac{u^2}{-k-y-r}$}\\\\u=\pm\sqrt{\dfrac{m}{-k-y-r}}\qquad\text{take the square root}](https://tex.z-dn.net/?f=%5Cdfrac%7Bm%7D%7Bu%5E2%7D%2Br%3D-k-y%5Cqquad%5Ctext%7Bgiven%7D%5C%5C%5C%5C%5Cdfrac%7Bm%7D%7Bu%5E2%7D%3D-k-y-r%5Cqquad%5Ctext%7Bsubtract%20%24r%24%7D%5C%5C%5C%5C%5Cdfrac%7Bm%7D%7B-k-y-r%7D%3Du%5E2%5Cqquad%5Ctext%7Bmultiply%20by%20%24%5Cdfrac%7Bu%5E2%7D%7B-k-y-r%7D%24%7D%5C%5C%5C%5Cu%3D%5Cpm%5Csqrt%7B%5Cdfrac%7Bm%7D%7B-k-y-r%7D%7D%5Cqquad%5Ctext%7Btake%20the%20square%20root%7D)
Answer: I got -2
I plugged -6 in for y and then simplified. -6 x -6 = 36. 7 x -6 = -42. So 36 - 42 = -6. -6 + 4 = -2
Answer:
21/3, 25/9, 2.3, 23.5%
Step-by-step explanation:
21/3 is 7.
2.3
23.5% is .235
25/9 is 2.7777...
He added incorrectly , meaning he would have to do 8 times 24
Step 2 is put the x's together and then the y's step 3 is add the like terms
step 4 is just simplify
step 5 is multiply all terms together
and step 6 is take the answer u got and that should be the radius of the circle.