Answer:
He washed 4 cars.
Step-by-step explanation:
1. The variable that was unknown x amount of cars washed.
2.The equation I used was 110-50=15x
3. To solve this you subtract the 50$ from 110$ you get sixty dollars you do that to take out what he earned for his allowance. Then your equation is 60=15x so you divide each side by 15 and when you do that x=4
Answer:
b
Step-by-step explanation:
Answer:
The simplified form is,
![\boxed{\boxed{6\sqrt{5}+9\sqrt{7}}}](https://tex.z-dn.net/?f=%5Cboxed%7B%5Cboxed%7B6%5Csqrt%7B5%7D%2B9%5Csqrt%7B7%7D%7D%7D)
Step-by-step explanation:
The given expression is,
![=2\sqrt{20}-3\sqrt{7}+2\sqrt{5}+4\sqrt{63}](https://tex.z-dn.net/?f=%3D2%5Csqrt%7B20%7D-3%5Csqrt%7B7%7D%2B2%5Csqrt%7B5%7D%2B4%5Csqrt%7B63%7D)
![=2\sqrt{4\times 5}-3\sqrt{7}+2\sqrt{5}+4\sqrt{9\times 7}](https://tex.z-dn.net/?f=%3D2%5Csqrt%7B4%5Ctimes%205%7D-3%5Csqrt%7B7%7D%2B2%5Csqrt%7B5%7D%2B4%5Csqrt%7B9%5Ctimes%207%7D)
![=2(\sqrt{4}\times \sqrt{5})-3\sqrt{7}+2\sqrt{5}+4(\sqrt{9}\times \sqrt{7})](https://tex.z-dn.net/?f=%3D2%28%5Csqrt%7B4%7D%5Ctimes%20%5Csqrt%7B5%7D%29-3%5Csqrt%7B7%7D%2B2%5Csqrt%7B5%7D%2B4%28%5Csqrt%7B9%7D%5Ctimes%20%5Csqrt%7B7%7D%29)
![=2(2\times \sqrt{5})-3\sqrt{7}+2\sqrt{5}+4(3\times \sqrt{7})](https://tex.z-dn.net/?f=%3D2%282%5Ctimes%20%5Csqrt%7B5%7D%29-3%5Csqrt%7B7%7D%2B2%5Csqrt%7B5%7D%2B4%283%5Ctimes%20%5Csqrt%7B7%7D%29)
![=4\sqrt{5}-3\sqrt{7}+2\sqrt{5}+12\sqrt{7}](https://tex.z-dn.net/?f=%3D4%5Csqrt%7B5%7D-3%5Csqrt%7B7%7D%2B2%5Csqrt%7B5%7D%2B12%5Csqrt%7B7%7D)
![=4\sqrt{5}+2\sqrt{5}+12\sqrt{7}-3\sqrt{7}](https://tex.z-dn.net/?f=%3D4%5Csqrt%7B5%7D%2B2%5Csqrt%7B5%7D%2B12%5Csqrt%7B7%7D-3%5Csqrt%7B7%7D)
![=6\sqrt{5}+9\sqrt{7}](https://tex.z-dn.net/?f=%3D6%5Csqrt%7B5%7D%2B9%5Csqrt%7B7%7D)
Answer:Divide both sides by the numeric factor on the left side, then solve.
m
=
−
4
Step-by-step explanation:
You can draw the 3 rectangles with these measurements then divide one horizontally one vertically and one slanted from one top corner to one bottom corner