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OlgaM077 [116]
2 years ago
8

5. The perimeter of the shown

Mathematics
2 answers:
Katyanochek1 [597]2 years ago
8 0
21 divided by 3= 7
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Nastasia [14]2 years ago
3 0

Answer:

7 cm

Step-by-step explanation:

An equilateral triangle has all sides equal.

To find the measure of the side, simply divide the perimeter by 3. This is because a triangle has 3 sides.

21 ÷ 3 = 7

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The area of a square concrete slab is 20 square feet. Find the side length of the square concrete slab if the area is increase b
guapka [62]

The side length of the square concrete slab if the area is increased by 25% is 5feet

The formula for calculating the area of a square is expressed as:

A =  L² where:

L is the side length of the square

Given the area of the square concrete slab = 20 square feet

20 = L²

L =√20

If the area is increased  by 25%, new area will be:

An = 20 + (0.25*20)

An = 20 + 5

An = 25 sq.ft

Get the new length

An = Ln²

25 =   Ln²

Ln = √25

Ln = 5feet

Hence the side length of the square concrete slab if the area is increased by 25% is 5feet

Learn more here: brainly.com/question/11300671

7 0
3 years ago
Lisa Purchased almonds for $3.50 per pound. She spent a total of $24.50. how many pounds of almond did she purchase?
Margaret [11]

Answer:

7 pounds of almond

Step-by-step explanation:

It is $3.50 per pound.

If she spent a total of $24.50, just divide 24.50 by 3.50

\frac{24.50}{3.50} = 7

We can verify this by multiplying 3.50 by 7 which gives us 24.50

5 0
3 years ago
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Choose the best description of the curve of y = a sin x for a < 0, starting at the origin and moving in the positive x direct
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Answer: Zero, minimum, Zero, Maximum, Zero

Step-by-step explanation:

That’s the answer in Edge

3 0
2 years ago
You use 4 gallons of water on 30 plants in your garden. At that rate, how much water will it take to water 45 plants?
4vir4ik [10]

4 / 30 = .13

.13 • 45 = 6 gallons of water

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