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Eva8 [605]
3 years ago
11

Solve 5(x - 4) = 2(x + 5)for x

Mathematics
2 answers:
Wittaler [7]3 years ago
8 0

Answer:

x = 10

Step-by-step explanation:

Step 1: Distribute parenthesis

5x - 20 = 2x + 10

Step 2: Add 20 to both sides

5x = 2x + 30

Step 3: Subtract 2x from both sides

3x = 30

Step 4: Divide by 3

x = 10

miv72 [106K]3 years ago
6 0

5x-20 = 2x+10

3x-20= 10

3x= 30

x=10

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Two cars got an oil change at the same auto shop. The shop charges customers for each quart of oil plus a flat fee for labor. Th
zvonat [6]

The labor fee is $13.55 and each quart of oil is $2.25

Step-by-step explanation:

Let,

x be the amount of each quart of oil

y be the amount of labor fee

According to given statement;

5x+y=24.80        Eqn 1

7x+y=29.30        Eqn 2

Subtracting Eqn 1 from Eqn 2

(7x+y)-(5x+y)=29.30-24.80\\7x+y-5x-y=4.50\\2x=4.50

Dividing both sides by 2

\frac{2x}{2}=\frac{4.50}{2}\\x=2.25

Putting x=2.25 in Eqn 1

5(2.25)+y=24.80\\11.25+y=24.80\\y=24.80-11.25\\y=13.55

The labor fee is $13.55 and each quart of oil is $2.25

Keywords: linear equation, subtraction

Learn more about subtraction at:

  • brainly.com/question/116715
  • brainly.com/question/11680012

#LearnwithBrainly

6 0
3 years ago
What is the average of the following numbers: 18, 64, 23, 78, 82, 91
Katen [24]
To Find The Answer, We Need To Add All Of Them Together, Then Divide By the Number Of Values. So:
64+23+78+82+91
-----------------------
             5

<span>64+23+78+82+91 = 338.
</span>
338
-----
  5

338/5 = 67.6

So, The Average Is 67.6
3 0
3 years ago
The diameter of a circle is 15 in. Which measure below cannot be a chord on the same circle?
diamong [38]
It's c 18, because the diameter is the longest chord so it would be greater than 15.
6 0
3 years ago
Decline of 11.3%
Katarina [22]

Answer:

decay.

Step-by-step explanation:

decline means reduce, which is a negative term. decay is also negative.

decimal form= .113 or .11

3 0
3 years ago
Round the numbers to the nearest tenth, then find the sum:<br> 3.296 + 0.9785.
Debora [2.8K]

Answer:

4.3

Step-by-step explanation:

first round

3.296 is 3.3

0.9785 is 1

3.3 + 1 = 4.3

4 0
3 years ago
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