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3 years ago

Why can you compare two fractions with the same denominator by only comparing the numerators

1 answer:

6 0

Think about it like this: You have two pizzas that are cut in 8 pieces. You ate 5 and your friend ate 7. Who ate more? Obviously your friend did since 7 is greater than 5. BUT, you can only do that if both pizzas were cut in 8 pieces. If your pizza was cut in 7 and his was cut in 12, you can't just look at the numerator and say your friend ate more. You have to find a common denominator. That's why when you have a common denominator you can compare fractions because the "things" are cut into equal pieces.

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A group of preschoolers has 30 boys and 13 girls what is the ratio of boys to all children?

vekshin1

A group of preschoolers has 30 boys and 13 girls then the ratio of boys to all children would be 30:43.

What is a ratio?

A ratio in mathematics shows how many times one number contains another. For example, if a bowl of fruit contains eight oranges and six lemons, the orange-to-lemon ratio is eight to six. Similarly, the lemon-to-orange ratio is 6:8, and the orange-to-total fruit ratio is 8:14.

A group of preschoolers has 30 boys and 13 girls.

Total children will be = 30 + 13 = 43

Ratio = number of boys/total children

= 30/43.

Hence, if A group of preschoolers has 30 boys and 13 girls then the ratio of boys to all children would be 30:43.

To learn more about the ratio, visit:

brainly.com/question/12024093

#SPJ1

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Two non-simultaneous events have an equal likelihood of occurring (50%). If the events are independent of each other, what is th

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3 years ago

A triangular prism is 15 meters long and has a triangular face with a base of 7.2 meters and a height of 4.8 meters. The other t

Aleonysh [2.5K]

<h3>Answer: 304.56 square meters</h3>

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Work Shown:

area of triangle = (1/2)*base*height

area of triangle = (1/2)*7.2*4.8

area of triangle = 17.28

There are two of these triangles, so the surface area of all the triangles combined is 2*17.28 = 34.56

Now let's calculate the lateral surface area (LSA)

LSA = (perimeter of triangular base)*(depth of prism)

LSA = (7.2+4.8+6)*(15)

LSA = (18)*(15)

LSA = 270

Add this onto the previous area of the triangles

total surface area = (base area)+(LSA) = 34.56+270 = 304.56

7 0

3 years ago

Read 2 more answers