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madreJ [45]
3 years ago
10

Find the scale factor.

Mathematics
2 answers:
ryzh [129]3 years ago
5 0
5times3 is 15. That’s what I got
3241004551 [841]3 years ago
3 0
The scale factor is 3.

5 x 3 is 15
7 x 3 is 21

Therefore they are both multiplied by 3
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What is the double of a hundred?
larisa86 [58]

Answer:

200

Step-by-step explanation:

100 * 2 = 200

8 0
4 years ago
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The ratio of boys to girls in a math class is 2 to 3. If the class has 20 students, how many of them are girls?
son4ous [18]

Answer:

8:12

Step-by-step

4 0
3 years ago
How do i simplify this?
Law Incorporation [45]

Answer:

k = 8

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

Step-by-step explanation:

<u>Step 1: Define</u>

-84 = -2(2 + 5k)

<u>Step 2: Solve for </u><em><u>k</u></em>

  1. Divide -2 on both sides:                    42 = 2 + 5k
  2. Isolate <em>k</em> term:                                    40 = 5k
  3. Isolate <em>k</em>:                                             8 = k
  4. Rewrite:                                              k = 8

<u>Step 3: Check</u>

<em>Plug in k into the original equation to verify it's a solution.</em>

  1. Substitute in <em>k</em>:                    -84 = -2(2 + 5(8))
  2. Multiply:                               -84 = -2(2 + 40)
  3. Add:                                     -84 = -2(42)
  4. Multiply:                               -84 = -84

Here we see that -84 does indeed equal -84.

∴ k = 8 is the solution to the equation.

5 0
3 years ago
The west side soccer league has 186 players. They expect a 7.5% increase in players for at least the next 4 years. How many play
vivado [14]

Answer:

They will have 200 players at that point.

Step-by-step explanation:

7.5% increase

This means that the amount will be 100% + 7.5% = 107.5% = 1.075 of the original amount, that is, the original amount multiplied by 1.075.

Currently has 186 players. How many players will they have at that point?

186*1.075 = 199.95

Rounding up:

They will have 200 players at that point.

5 0
3 years ago
Explain how you determined which operation was needed to write the equation. 9 divided by 3/4
DiKsa [7]

9/ (3/4)

= (9/1)/(3/4)

=(9x4)/(1x3)

=36/3

=12

4 0
3 years ago
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