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shtirl [24]
3 years ago
5

1. f(x) = x2 - 21 f(5)

Mathematics
1 answer:
matrenka [14]3 years ago
8 0

Answer:

x=13

Step-by-step explanation:

if you will substitute the value of f(x) with 5, you will get the following equation:

5=2x-21

2x=26/÷2

x=13

(I didn't know what you ment when you wrote x2, is it x square or 2X)

I really hope it was the second one, cause that's how I solved it.

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Step-by-step explanation:

3 0
3 years ago
Can you help me please.........................
andrew11 [14]

area of shaded figure = l x w = 24 *18 = 432

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Answer is A

8 0
3 years ago
The three sides of a triangular lot are represented by x , 2 x , and 3 x + 2. Find each side if the perimeter of the triangular
Leona [35]

Answer:

60 ft, 120 ft, 182 ft

Step-by-step explanation:

Hi there,

To find the perimiter of a polygon, you need to add of all of the sides.

So, let's do that:

x + 2x + 3x+2

Since we are given the perimeter, we make what we just did above, equal to the perimeter

x + 2x + 3x +2 = 362

Combine lke terms...

6x + 2 = 362

Subtract 2 from both sides to start to isolate the variable...

6x = 360

Divide both sides by 6 to isolate x...

x = 60

But we're not done yet...

The length of the first side is 60 ft, the length of the second side is 2*60 which is 120 ft, and the length of the third side is 3*60 + 2 which is 182 ft.

Let's check...

Does 60 + 120 + 182 = 362?

362 = 362

Our answers are right

Hope this helps! Stay safe!

- Emily

5 0
4 years ago
Please help me and if you do thx!
ad-work [718]

Answer:

430.59

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which sentence uses punctuation correctly?
lukranit [14]
It would probably be A because it makes more sence
3 0
3 years ago
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