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erma4kov [3.2K]
1 year ago
11

in art class 5 students are able to share 20 crayons. How many crayons are needed if there are 30 students in the class?

Mathematics
2 answers:
Alexus [3.1K]1 year ago
8 0
5 more because u skip my 5
skelet666 [1.2K]1 year ago
6 0

Given:

5 students are able to share 20 crayons.

\text{One student can share }\frac{20}{5}=4\text{ crayons}

For 30 students,

30\times4=120

Answer: There are 120 crayons are needed for 30 students.

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Answer:

Perimeter of polygon B = 80 units

Step-by-step explanation:

Since both polygons are similar, their corresponding sides and perimeters are proportional. Knowing this we can setup a proportion to find the perimeter of polygon B.

\frac{side-polygonA}{side-polygonB} =\frac{perimeter-polygonA}{perimeter-polygonB}

Let x be the perimeter of polygon B. We know from our problem that the side of polygon A is 24, the side of polygon B is 15, and the perimeter of polygon A is 128.

Let's replace those value sin our proportion and solve for x:

\frac{side-polygonA}{side-polygonB} =\frac{perimeter-polygonA}{perimeter-polygonB}

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x=\frac{128*15}{24}

x=\frac{1920}{24}

x=80

We can conclude that the perimeter of polygon B is 80 units.

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