Question

please answer me correct please friends​

Answer 1

as much as I know I can say

1st 18a

2nd 1000cm³

9th x(a+b)

10th x =35

I hope it helps you

Answer 2

1) 4a + 12a = 16a

2) cube

3) 1000 cm^3

$4)\pi {r}^{2} h$

r = radius. h = height

$5)2\pi \: r \: = \pi {r}^{2} \\ \pi \: and \: r \: cancel \\ \\ r = 2$

6) any no . raised to the power 0 is 1

7) dependent variables since change in one affects the other.

8) no

$9) \: {x}^{2} + (a + b)x + ab$

$\frac{14}{10} = \frac{x}{15} \\ x = \frac{14 \times 15}{10} \\ x = 21$

there you go :)