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kolbaska11 [484]
4 years ago
7

85% of all cars sold in chicago are some color other than black. if three hundred black cars were sold in chicago, how many cars

were sold there?
Show all work please
Mathematics
1 answer:
hram777 [196]4 years ago
7 0
Of 85% of cars sold where not black then 100-85% where black = 15%
let the number of cars sold be y
then 15%*y=300
y= 300 divided by 15%
= (300*100)/15
=2000
therefore 2000 cars were sold
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A number cube is tossed and a spinner is spun. What is the probability of getting a 3 or 4 on the number cube and not getting 8
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Answer:

7/24

Step-by-step explanation:

Given in the question,

a number cube is tossed and a spinner is spun.

Cube have 6 in numbers

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probability of having 3 or 4 = 2/6

                                             = 1/3

                           

Spinners are commonly made with 6, 8, 10 and 12 flat surfaces.

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Step-by-step explanation:

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Write an equation of the line passing through the points (4.15) and (-1. - 15).
jolli1 [7]

Answer:

y = 6x - 9

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS

<u>Algebra I</u>

Slope Formula: m=\frac{y_2-y_1}{x_2-x_1}

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

Point (4, 15)

Point (-1, -15)

<u>Step 2: Find slope </u><em><u>m</u></em>

  1. Substitute:                    m=\frac{-15-15}{-1-4}
  2. Subtract:                       m=\frac{-30}{-5}
  3. Divide:                          m=6

<u>Step 3: Find y-intercept </u><em><u>b</u></em>

  1. Define:                    y = 6x + b
  2. Substitute:              -15 = 6(-1) + b
  3. Multiply:                  -15 = -6 + b
  4. Isolate <em>b</em>:                 -9 = b
  5. Rewrite:                   b = -9

<u>Step 4: Write linear equation</u>

<em>Substitute in all variables.</em>

y = 6x - 9

And we have our answer!

4 0
3 years ago
The revenue from manufacturing and selling x units of toaster ovens is given by:
nexus9112 [7]

Answer:

$248,000.

Step-by-step explanation:

We have been given that the revenue from manufacturing and selling x units of toaster ovens is given by R(x)=-0.3x^2+200x-82,000.

To find the amount of revenue earned from selling 3,000 toaster, we will substitute x=3,000 in the given formula as:

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R(3,000)=-0.03*9,000000+600,000-82,000

R(3,000)=-270,000+518,000

R(3,000)=248,000

Therefore, the company should expect revenue of $248,000 from selling 3,000 toaster ovens.

3 0
3 years ago
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