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Stels [109]
3 years ago
5

5(4 − x) = −5x + 20 i need help

Mathematics
2 answers:
Elza [17]3 years ago
4 0

Answer:

Infinite solutions.

Step-by-step explanation:

Distribute the 5 to the numbers inside the parenthesis.

5 × 4=20

5 × -x=-5x

-5x+20.

They are the same.

-5x+20=-5x+20

Add 5x on both sides:

-5x+5x+20=-5x+5x+20

20=20

So there are infinite solutions.

adoni [48]3 years ago
3 0

Answer:

x=4

Step-by-step explanation:

-5(4-x)=-5x+20

We simplify the equation to the form, which is simple to understand

-5(4-x)=-5x+20

Reorder the terms in parentheses

+(-20+5x)=-5x+20

Remove unnecessary parentheses

-20+5x=-5x+20

We move all terms containing x to the left and all other terms to the right.

+5x+5x=+20+20

We simplify left and right side of the equation.

+10x=+40

We divide both sides of the equation by 10 to get x.

x=4

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Answer:

Step-by-step explanation:

Let us first generate the frequency table from the information given:

Hurricane number(X)       Frequency(f)                f(X)

6                                            9                                   54

8                                            13                                  104

12                                           16                                  192

14                                            12                                168

Total                                     ∑(f) = 50                          ∑f(x) =518

In order to determine the last frequency (the remaining years), we will add the other frequencies and subtract the answer from 50, which is the total frequency (50 years). This is done as follows:

Let the last frequency be f

9 + 3 + 16 + f = 50

38 + f = 50

f = 50 - 38 = 12

Now, calculating mean:

\bar {X} = \frac{\sum f(x)}{\sum(f)} \\\\\bar {X} = \frac{518}{50} \\\\\bar {X} = 10.36

Therefore mean number of hurricanes = 10.4 (to one decimal place)

7 0
3 years ago
How much is 2 plus 3
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Answer:

5

Step-by-step explanation:

Add

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Liabilities are what someone owes and assets are what someone owns and is worth something. The house is an asset and the car loan is a liability. According to the numbers provided the assets have an increase of $6,000 with +10,000 from the house and -4,000 from the car. And liabilities had a decrease of $25,500 with a -$29,000 from mortgage and car loans and a +3,500 from the savings account and debt. So assets increase and liabilities decrease. 
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Shawn had a balance of $39 in his checking account. Since then he made deposits of $260 and $428 and wrote checks for $62, $106,
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Answer:

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