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Vladimir79 [104]
2 years ago
11

How do you solve this

Mathematics
1 answer:
MrRa [10]2 years ago
7 0
Download photo math on App Store easy plz but number one is a=8
You might be interested in
A square has an area of 81x square cm. What is the perimeter of the square ?
Fudgin [204]

Answer:

The perimeter of the square is 36\sqrt{x}\ cm

Step-by-step explanation:

step 1

Find the length side of the square

we know that

The area of a square is equal to

A=b^{2}

where

b is the length side of the square

we have

A=81x\ cm^{2}

substitute and solve for b

81x=b^{2}

square root both sides

b=9\sqrt{x}\ cm

step 2

Find the perimeter of the square

we know that

The perimeter of the square is equal to

P=4b

we have

b=9\sqrt{x}\ cm

substitute

P=(4)9\sqrt{x}

P=36\sqrt{x}\ cm

6 0
3 years ago
What are four kinds of parabolas
patriot [66]
Solutions 

<span>A right handed parabola: </span>y^2=4ax<span><span>

</span></span>A left handed parabola: y^2=-4ax<span>

</span>An up facing parabola: x^2=4ay<span>

</span>A down facing parabola: x^2=-4ay
3 0
3 years ago
Batman slings a 320 ft. climbing cable from a helicopter to his batmobile below. If the cable tightens up
Leokris [45]

Answer:

188 ft

Step-by-step explanation:

         helicopter

___________________________________________

               |\   54°

               |    \

               |       \    320 ft

               |          \

               |      54°  \

-------------+--------------+-------------------------------

                        x

cos 54° = x/(320 ft)

x = 320 ft × cos 54°

x = 188 ft

Answer: 188 ft

5 0
2 years ago
The critical value t* gets larger as the confidence level increases. True or false?
posledela

Answer:

We can find the critical value t_{\alpha/2}

And for this case if the confidence increase the critical value increase so then this statement is True

Step-by-step explanation:

For a confidence level given c, we can find the significance level like this:

\alpha=1 -c

And with the degrees of freedom given by:

df=n-1

We can find the critical value t_{\alpha/2}

And for this case if the confidence increase the critical value increase so then this statement is True

5 0
3 years ago
1/2 (4r+6) what dose (4r+6) mean
Alisiya [41]
Answer: 5

This is because (4r + 6) means you take r and multiply that number by 4.

Because there is no number, r would equal one in this case.

4 • 1 is 4

4 + 6 is 10

This would give us 1/2(10)

Half of 10 is 5.

Therefore, the answer is 5.
5 0
3 years ago
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