Answer:
![=13.6](https://tex.z-dn.net/?f=%3D13.6)
Step-by-step explanation:
![\mathrm{Remove\:parentheses}:\quad \left(a\right)=a](https://tex.z-dn.net/?f=%5Cmathrm%7BRemove%5C%3Aparentheses%7D%3A%5Cquad%20%5Cleft%28a%5Cright%29%3Da)
![=4\left(3.4+2\right)-\frac{56}{7}](https://tex.z-dn.net/?f=%3D4%5Cleft%283.4%2B2%5Cright%29-%5Cfrac%7B56%7D%7B7%7D)
![=21.6-8](https://tex.z-dn.net/?f=%3D21.6-8)
![\mathrm{Subtract\:the\:numbers:}\:21.6-8=13.6](https://tex.z-dn.net/?f=%5Cmathrm%7BSubtract%5C%3Athe%5C%3Anumbers%3A%7D%5C%3A21.6-8%3D13.6)
![=13.6](https://tex.z-dn.net/?f=%3D13.6)
Use photomath it will help you
Answer:
20+2x
Step-by-step explanation:
If you're just looking for an expression, then it would be 20+2x considering there's no way to solve for x, and there's 2 widths and 2 lengths of a rectangle
Answer:
you can use equations to find out how much tip you should give
Answer:
(n + 1) (2n - 7)
Step-by-step explanation:
2n^2 - 5n - 7
AC= 2 * -7 = -14
-7 + 2 = -5
2n^2 - 7n + 2n - 7
1n(2n - 7) 1(2n - 7)
(n + 1) (2n - 7)