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blondinia [14]
3 years ago
14

Simplify the expression: 7 + -7x + -8 - 9x + 5

Mathematics
2 answers:
Zinaida [17]3 years ago
5 0

Answer:

x = 1/4

Step-by-step explanation:

<u>Step 1:  Combine like terms</u>

7 + -7x + -8 - 9x + 5

7 - 7x - 8 - 9x + 5

4 - 16x

<u>Step 2:  Solve for x</u>

4 - 16x - 4 = 0 - 4

-16x/-16 = -4/-16

x = 4/16

x = 1/4

Answer: x = 1/4

aleksklad [387]3 years ago
5 0

To simplify the expression 7 + -7x + -8 - 9x + 5 we can combine like terms.

= (7 - 8 + 5) + (-7x - 9x)

= 4 - 16x

Put the equation in standard form. (ax^2 + bx + c)

-16x + 4

Best of Luck!

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1.5% x 412 = 618?

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3 years ago
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Write an equation of each line in standard form with integer coefficients.<br> 4. y = 2.4x + 1.8
Nadusha1986 [10]

Answer:

<h2>12x - 20y = -9</h2>

Step-by-step explanation:

The standard form of an equation of a line:

Ax+By=C

We have

4y=2.4x+1.8

Convert

4y=2.4x+1.8          <em>multiply both sides by 10</em>

40y=24x+18          <em>subtract 24x from both sides</em>

-24x+40y=18            <em>change the signs</em>

24x-40y=-18          <em>divide both sides by 2</em>

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3 0
3 years ago
1. a motor car race is 500 miles long and consists of completing laps of a circular speedway
Zarrin [17]

The function y = 2.5x + 500 represents the total number of miles if the motor car race is 500 miles long, option (d) is correct.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have:

y represents the number of miles a motor car has left to go in the race

x represents the number of laps completed by the motor car

The total number of miles if we consider only circular speedways = 2.5x

The total number of miles:

y = 2.5x + 500  (because 500 is the constant)

Thus, the function y = 2.5x + 500 represents the total number of miles if the motor car race is 500 miles long option (d) is correct.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

7 0
2 years ago
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3 years ago
Caroline bought 20 shares of stock at 101/2, and after 10 months the value of the stocks was 111/4. If Caroline were to sell all
SashulF [63]
The correct answer would be C. $15.

Hope helps
8 0
3 years ago
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