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balu736 [363]
3 years ago
12

The perimeter of an equilateral triangle is 3 (+ 5). The perimeter of a rectangle is 2 (2x - 3) + 2(2). If the perimeters of the

two figures are equal, then what is the value of r?​
Mathematics
1 answer:
TiliK225 [7]3 years ago
5 0

Answer:

3.25

Step-by-step explanation:

Perimeter of triangle = 3(5) = 15 cm

Perimeter of rectangle = 2(2x - 3 + 4)

Perimeter = 2(2x + 1)

Perimeter = 4x + 2

4x + 2 = 15

4x = 15 - 2

4x = 13

x = 13/4

x = 3.25

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Subtract
kirza4 [7]

Answer:

Option D: 3x2 +  2x - 1

Step-by-step explanation:

Given that:

=(5x2 - 5x + 3 )- (2x2 +7x- 4)

As we have to subtract them so by simplifying:

"-" sign will alter all signs in the bracket

= 5x2 - 5x + 3 - 2x2 + 7x - 4

Now by adding same terms

= 5x2 - 2x2 - 5x + 7x + 3 -4

= 3x2 +  2x - 1

i hope it will help you!

5 0
3 years ago
A large drum in the shape of a cylinder is used to store used oil. The drum is 4 feet tall with a radius of 2 feet.
katrin [286]
<h3>Answer:  75.36 square feet</h3>

Your teacher may want you to type the number only.

==========================================================

Work Shown:

SA = surface area of a cylinder

SA = 2*pi*r^2 + 2*pi*r*h

SA = 2*3.14*2^2 + 2*3.14*2*4

SA = 75.36

The surface area is roughly 75.36 square feet.

6 0
2 years ago
Read 2 more answers
A race car travels 100 feet in 5 seconds, at this rate of speed, how many feet will the race car travel in a minute
Basile [38]
There are 60 seconds in one minute, and 60/5=12, so the race car would travel 100 feet every 5 seconds 12 times in one minute. You can simply multiply 100 by 12 to get your answer.
100x12=1200
The race car travels 1,200 feet in one minute.
6 0
3 years ago
Read 2 more answers
14. The least common multiple of 2, 5, 6, and 9 is
CaHeK987 [17]

Answer:

A

Step-by-step explanation:

8 0
4 years ago
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Molodets [167]
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