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vaieri [72.5K]
3 years ago
15

Is a compass is an unmarked ruler?

Mathematics
1 answer:
zvonat [6]3 years ago
7 0
I'm gonna say that's a false accusation

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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
WILL GIVE BRAINEST <br>you invest 300$ in an account....
Lapatulllka [165]
It will be B. <span>(300 * 0.075 * 10) + 300 = 225 + 300 = $525</span>
5 0
3 years ago
Read 2 more answers
A rectangle has an area of 90 square centimeters and a height of 12.5 centimeters. What is the length of the base?
Sergio [31]

Answer:

A. 7.2 centimeters

Step-by-step explanation:

The length of the base is 7.2 centimeters. The area of a rectangle is length*width

The length is unknown but the area is known. To find the length, all we have to do is divide the area from the height.

The working is as follows :

Area = 90 cm²

Height = 12.5 cm

Length = ?

<em>Length</em><em> </em><em>=</em><em> </em><em>Area</em><em> </em><em>÷</em><em> </em><em>Height</em>

<em>=</em><em> </em><em>90</em><em> </em><em>÷</em><em> </em><em>12</em><em>.</em><em>5</em>

<em>=</em><em> </em><em>7.2cm</em>

4 0
2 years ago
-7 2/3 + (-5 1/ ) +8 3/4
sertanlavr [38]

Answer:

Step-by-step explanation:

yes its good

8 0
2 years ago
A climber is on a hike.after 2 hours he is at an altitude of 400 feet. After 6 hours, he is at an altitude of 700 feet. What is
aniked [119]
75 ft


Hope that helps, Good luck! (:
8 0
3 years ago
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