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Bezzdna [24]
1 year ago
15

Please help I will give brainly to the one with the best answer

Mathematics
1 answer:
disa [49]1 year ago
3 0
I think you could try adding up all the x and then divided
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Use a proportion to determine the number of children age 5 in a kindergarten class if 80% of a class of 20 children are that age
igor_vitrenko [27]

Answer:

16 children

Step-by-step explanation:

80% of 20 children comes out to 16 children who are of age 5.

If desired, rewrite "80%" as "0.80" and use that 0.80 as the multiplier of 20:

0.80(20 children) = 16 children.

4 0
3 years ago
If the two legs of the right triangle are 5
yanalaym [24]

Answer:

hope this might be useful

4 0
3 years ago
Two ladders are leaning against a building, forming two similar triangles as shown below. The top of the longer ladder is 28 fee
postnew [5]

Answer:

The length of the longer ladder is 35 ft

Step-by-step explanation:

Please check the attachment for a diagrammatic representation of the problem

We want to calculate the length of the longer ladder ;

We make reference to the diagram

Since the two right triangles formed are similar. the ratios of their sides are equal;

Thus;

20/15 = 28/x + 15

20(x + 15) = 15(28)

20x + 300 = 420

20x = 420-300

20x = 120

x = 120/20

x = 6

So we want to calculate the hypotenuse of a right triangle with other sides 28ft and 21 ft

To do this, we use the Pythagoras’ theorem which states that square of the hypotenuse equals the sum of the squares of the two other sides

Let the hypotenuse be marked x

x^2 = 28^2 + 21^2

x^2 = 1,225

x = √1225

x = 35 ft

7 0
2 years ago
If a + bi is a zero of a function and the coefficients of the polynomial are real, what will be the other complex zero of the fu
lukranit [14]
A - bi would be the other complex zero.
When you take the sqrt when solving an equation you get a + and - solution.
8 0
3 years ago
The Lotta Chocolate Factory makes CHEWY CHERRY CHOCOLATES. The chocolates are shipped out in cases. Each case contains 9 boxes.
babunello [35]

Answer:

324

Step-by-step explanation:

One case has 9 boxes.

One box has 36 chocolates.

This equation would answer the amount in a case, case = chocolate*boxes

So there would be 36*9 chocolates, and that equals 324 in one case

8 0
3 years ago
Read 2 more answers
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