Answer:
![\frac{13}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B13%7D%7B2%7D)
Step-by-step explanation:
We have that:
![a=\frac{9}{2} \\b=2](https://tex.z-dn.net/?f=a%3D%5Cfrac%7B9%7D%7B2%7D%20%5C%5Cb%3D2)
Now we can find a+b
![\frac{9}{2}+2=\frac{9+4}{2}=\frac{13}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B9%7D%7B2%7D%2B2%3D%5Cfrac%7B9%2B4%7D%7B2%7D%3D%5Cfrac%7B13%7D%7B2%7D)
Answer:
10. 16 cubic cm
11. 5 and 1/3 cubic cm
Step-by-step explanation:
4 · 4 · 2 = 32
32 times 1/2 = 16
2 · 2 · 4 = 16
16 times 1/3
16x^4-81y^4 difference of perfect squares...
(4x^2-9y^2)(4x^2+9y^2) that's one of the equivalents...
(2x+3y)(2x-3y)(4x^2+9y^2) that's another one of them...