Question

Please help me asap 10 points.

Answer 1

Explanation:

1).

`(x)/(8) = (9)/(24)`

Cross multiply

We have

24x = 72

Divide both sides by 24

That's

`(24x)/(24) = (72)/(24)`

We have the answer as

x = 3

2).

3x² + 2x - 10

when x = - 1

Substitute the value of x into the expression

That's

3(-1)² + 2(-1) - 10

= 3 - 2 - 10

We have the answer as

- 9

When x = 0

That's

3(0) + 2(0) - 10

= - 10

When x = 1

That's

3(1)² + 2(1) - 10

= 3 + 2 - 10

= 5 - 10

= - 5

3).

`√(( - 9))`

First of all apply the radical rule

That's

`√( - a) = √( - 1) * √(a)`

So we have

`√( - 9) = √( - 1) * √(9)`

Using the imaginary rule

That's

`√( - 1) = i`

We have

`√(9) * i`

We have the final answer as

3i

4).

`(1)/(x)`

when x = 0

We have

`(1)/(0) = 0`

when x = 1

`(1)/(1) = 1`

when x = 2

We have

`(1)/(2)`

Hope this helps you