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inessss [21]
2 years ago
8

63 first-graders and 21 other students attended a school assembly. What percentage of the

Mathematics
2 answers:
boyakko [2]2 years ago
4 0

Answer:

75%

Step-by-step explanation:

alexira [117]2 years ago
3 0

Answer:

75%

Step-by-step explanation:

First let's start by finding the total number of students at the assembly:

63+21=84

Then we find the percentage of the students that were first-graders.

63/84=9/12=3/4=75/100=75%

As further explanation to how this works:

We take the number of first graders over the total number of students so we can find the percentage. Then we simplify it down to 3/4. Since percentages are out of 100 we can change the fraction so it's something out of 100. We multiply the numerator and denominator by 25 (since 100/4=25) and we get 75/100 which is 75%

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What property is 4(2x -3) from math
8_murik_8 [283]

Answer:

Distributive

4 0
2 years ago
Four more than the quotient of a number and 9 equals 2<br><br> Translate it to an equation
Georgia [21]
4(x÷9)=2

4 is multiplied to the (x÷9) to get your answer of 2
8 0
3 years ago
Trapezoids A and B are similar. Find the values of x and y.
Wewaii [24]

Step-by-step explanation:

when 2 shapes are similar, it means that all their angles are the same compared with each other.

and all distances (incl. side lengths) if one shape correlate to the corresponding distances in the other shadow by the same ratio or factor.

we have one side (30 m in A and 50 m in B), where we have both measures.

we see that the ratio to "go" from A to B is 30/50 = 3/5.

that means a distance in A is the same distance in B multiplied by 3/5.

and that factor is the same also for every other side.

therefore,

x = 15 m × 3/5 = 3 m × 3 = 9 m

y × 3/5 = 18 m

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y = 30 m

3 0
2 years ago
Kit and Kat are building a kite for the big kite festival. Kit has already
Lunna [17]

Kat should tell Kim that It's too late to change the area of this kite because the length of the diagonals of a kite determines its area.

<h3>How to calculate the area of a kite?</h3>

In Mathematics, the area of a kite is equal to one-half the product of the length of its diagonals. Mathematically, the area of a kite can be calculated by using this formula:

A = ½ × d₁ × d₂

<u>Where:</u>

  • A is the area of a kite.
  • d₁ and d₂ are the length of the diagonals of a kite.

Since Kit has already cut his sticks for the diagonals, Kat should tell him that it's too late to change the area of this kite because the length of the diagonals of a kite determines its area.

Read more on area of a kite here: brainly.com/question/9593985

#SPJ1

8 0
2 years ago
The slant height, l, of a cone with a surface area of 500π ft2 and a radius of 15 ft.
nataly862011 [7]
Surface area = πr(r + l)
500π = 15π(15 + l)
100 = 3(15 + l)
100=45+3l
100-45=3l
55=3l
l=55/3
l=18.3ft to one decimal place
6 0
3 years ago
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