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postnew [5]
4 years ago
6

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

.
A. x=100
B. x=75
C. x=40
D. x=15
E. x=16
Mathematics
1 answer:
igor_vitrenko [27]4 years ago
4 0

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.

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Select the correct answer from each drop-down menu.
pychu [463]

The figure shows that the polygon:

  • Has 6 sides.
  • Divided into 4 triangles.
  • Total interior angle measure of 180°.
  • Total measure of the interior angles of this polygon is 720°.

<h3>What is the polygon about?</h3>

The polygon has sides of: AB, BC, CD, DE, EF, FA.

So, this means that they have 6 sides and when you look at the diagram, this 6 sides can be divided into 4 triangle of which whose total interior will sum up to 180°.

Since there are 4 triangles and the interior is 180°, then to get  the total measure of the interior angles of this polygon will be:

= 180 X 4 = 720

Therefore, one can say that the The figure shows that the polygon, has 6 sides, may be divided into 4 triangles, each of which will have a total interior angle measure of  180. Therefore, the total measure of the interior angles of this polygon is 720.

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5 0
2 years ago
2. Starting at noon, the temperature dropped steadily at a rate of 0.3 degrees Celsius
arlik [135]

Answer:

a. -14,2/3

b. -28,3

Step-by-step explanation:

7 0
3 years ago
Roxanne has 42 hundreds of a dollar in change which shows the amount of change she has left
klasskru [66]
$0.42 that is what your answer would be
7 0
3 years ago
The total number of gallons of water in a tank, w, after t minutes is given in this table and the plot.
Katyanochek1 [597]

The equation showing the relationship between w and t is w = 4t

From the table, we have the following points:

(0,0) and (1,4)

Start by calculating the slope (m)

m = \frac{y_2 -y_1}{x_2 -x_1}

So, we have:

m = \frac{4 -0}{1 -0}

Simplify the numerator and the denominator

m = \frac{4}{1}

Divide 4 by 1

m = 4

The equation is then calculated as:

w = m(t - t_1) + w_1

This gives

w = 4(t - 0) + 0

Simplify

w = 4t

Hence, the equation is w = 4t

Read more about linear equations at:

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4 0
3 years ago
I=0.13x+1025 A textbook salesperson's monthly income depends on the amount of his sales. His monthly income is a salary of $1025
Snezhnost [94]

Answer:

l = 0.13x+1025

Step-by-step explanation:

Let the monthly sales be x

Monthly income = $1025 + 13% of monthly sales

Monthly income = $1025 + 0.13x

Since l  represent the monthly income

l = 1025+0.13x

Rearrange

l = 0.13x + 1025

Hence the linear equation representing the statement is l = 0.13x+1025

7 0
2 years ago
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