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Kamila [148]
3 years ago
7

Please help me with this

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0

Answer:

Step-by-step explanation:

Question 1. 50% of what number is 100?

Number = x

50%x = 100

5x/10 = 100 (50% = 2/10)

5x = 1000 (Multiplying by 10 at both sides of the equation)

<u>x = 200</u> (Dividing by 5 at both sides of the equation)

<u>Part 50 Whole 100 Part 75 Whole 150 Part 100 Whole 200</u>

Question 2. 25% of what number is 30?

Number = x

25%x = 30

x/4 = 30 (25% = 1/4)

x = 120 (Multiplying by 4 at both sides of the equation)

<u>Part 25 Whole 30 Part 50 Whole 60 Part 75 Whole 90 Part 100 Whole 120</u>

<u>Question 3. What did you differently to find the whole using a ratio table?</u>

Using a ratio table is a much more simple path to get the whole. I take it and just calculate the double of the information given to me for completing the next values in my table, until I get the part 100 and its correspondent whole.

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X+x+x+x+3 simplified
aleksklad [387]

Answer:

4x + 3

Explanation:

x + x + x + x + 3

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Simplify 4 x's to 4x

4x + 3

4 0
4 years ago
Question 7: I Can Identify the Slope and Y-intercept in an Equation.
Vera_Pavlovna [14]

Answer:

a) m = 3   b = 1/5

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3 years ago
A dealer sold 500 tennis racquets some were sold at $20 each and the rest were sold at $45 each. The total receipts from these s
arlik [135]

Answer:

He sold 100 rackets for $ 20

Step-by-step explanation:

To start, we have to make 2 equations, one that represents the number of rackets and the other the money

x + y = 500

x * 20 + y * 45 = 20000

we clear x in the first equation

x + y = 500

x = 500 - y

we replace x in the second equation with (500 - y)

x * 20 + y * 45 = 20000

(500 - y) * 20 + y * 45 = 20000

10000 - 20y + 45y = 20000

-20y + 45y = 20000 - 10000

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y = 10000/25

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we replace x in the first equation with the value obtained

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8 0
4 years ago
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A bulletin board has a perimeter of 200 inches. Which equation expresses the area A(w) of the bulletin board as a function of it
o-na [289]

Answer: A(W) = 100W -W^{2}

Step-by-step explanation:

The formula for calculating the perimeter is given as :

P = 2 ( L + W )

the perimeter is given as 200 , that is

200 = 2 ( L + W )

Dividing through by 2 , we have

100 = L + W

Make L the subject of the formula ;

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The formula for the area is given as Length x width , substituting the values , we have :

A = LW , since , L = 100 - W , we have

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A(W) = 100W -W^{2}

6 0
3 years ago
Plese help me brainliest
nikdorinn [45]
1- 1 2/5
2- 4 1/2
3- 1 1/8
4- 1 5/6
5- 12/17


Have a good day
3 0
3 years ago
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