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FinnZ [79.3K]
3 years ago
6

- 3(x - 1) + 8(x - 3) = 6x + 7 - 5x short solve it plz

Mathematics
2 answers:
g100num [7]3 years ago
6 0

Answer:

x=-28

Step-by-step explanation:

-3(x-1)+8(x-3)=6x+7

1) Distribute -3 to x and -1:

-3x+3

2) Distribute 8 to x and -3:

-3x+3+8x-24=6x+7

3) Combine alike terms:

5x-21=6x+7

4) Subtract 5x from both sides:

-21=x+7

5) Subtract 7 from both sides:

x=-28

Footnotes:

The <u>Distributive</u> property says a(b+c)=ab+ac

Drupady [299]3 years ago
4 0

Answer:

no it = -3x +3 + 8x - 24 = 5x + 21

Step-by-step explanation:

i think u dont need explaination so...

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Answer: 112

Step-by-step explanation:

Following PEMDAS, we need to add the numbers in the parenthesis first

8(7+7) becomes 8(14)

Now we just multiply 8 and 14

8(14) = 112

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Marina CMI [18]

Answer:

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Step-by-step explanation:

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TEA [102]

Answer:

The probability that the sample proportion is between 0.35 and 0.5 is 0.7895

Step-by-step explanation:

To calculate the probability that the sample proportion is between 0.35 and 0.5 we need to know the z-scores of the sample proportions 0.35 and 0.5.

z-score of the sample proportion is calculated as

z=\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } } where

  • p(s) is the sample proportion of first time customers
  • p is the proportion of first time customers based on historical data
  • N is the sample size

For the sample proportion 0.35:

z(0.35)=\frac{0,35-0.41}{\sqrt{\frac{0.41*0.59}{72} } } ≈ -1.035

For the sample proportion 0.5:

z(0.5)=\frac{0,5-0.41}{\sqrt{\frac{0.41*0.59}{72} } } ≈ 1.553

The probabilities for z of being smaller than these z-scores are:

P(z<z(0.35))= 0.1503

P(z<z(0.5))= 0.9398

Then the probability that the sample proportion is between 0.35 and 0.5 is

P(z(0.35)<z<z(0.5))= 0.9398 - 0.1503 =0.7895

6 0
3 years ago
three boxes under my stairs contain apples or pears are both each box contains the same number of pieces of fruit the first box
Brrunno [24]

There are 16 fruits in each of the boxes found under the stairs.

<h3>What is an equation?</h3>

An equation is an expression used to show the relationship between two or more numbers and variables.

Let x represent the number of pears, hence:

Number of fruit in first box = 12 + (1/9)x

Number of fruit in second box = number of fruit in third box = (8/9)x ÷ 2 = (4/9)x

Therefore:

12 + (1/9)x = (4/9)x

x = 36

First box = second box = third box = (4/9) * 36 = 16

There are 16 fruits in each of the boxes found under the stairs.

Find out more on equation at: brainly.com/question/2972832

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julsineya [31]

Answer:

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