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3 years ago

What is -8c+8c-12 when you are simplifying

Mathematics

1 answer:

Romashka [77]3 years ago

5 0

Answer:

Multiply c and 8

Multiply c and 1

The c just gets copied along.

The answer is c

8*c evaluates to 8c

Because of the minus sign

8c becomes - 8c

The answer is -8c

Multiply c and 8

Multiply c and 1

The c just gets copied along.

The answer is c

8*c evaluates to 8c

-8*c+8*c evaluates to 0c

-8*c+8*c-12 evaluates to -12

The final answer is

-12

Step-by-step explanation:

Please mark brainliest and have a great day!

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Luden [163]

Answer:

$x=-3$

Step-by-step explanation:

Given equation:

$\dfrac{2x}{x+1}+\dfrac{3(x+1)}{x}=5$

Make the denominators the same:

$\implies \dfrac{2x}{x+1} \cdot\dfrac{x}{x}+\dfrac{3(x+1)}{x} \cdot \dfrac{x+1}{x+1}=5$

$\implies \dfrac{2x^2}{x(x+1)}+\dfrac{3(x+1)^2}{x(x+1)} =5$

Combine the fractions:

$\implies \dfrac{2x^2+3(x+1)^2}{x(x+1)} =5$

Multiply both sides by x(x+1):

$\implies 2x^2+3(x+1)^2 =5x(x+1)$

Expand the brackets:

$\implies 2x^2+3(x^2+2x+1) =5x^2+5x$

$\implies 2x^2+3x^2+6x+3 =5x^2+5x$

Combine like terms:

$\implies 5x^2+6x+3=5x^2+5x$

Subtract 5x² from both sides:

$\implies 6x+3=5x$

Subtract 5x from both sides:

$\implies x+3=0$

Subtract 3 from both sides:

$\implies x=-3$

Learn more about algebraic fractions here:

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5 0

2 years ago

What is the slope of y=0.50x+5 and write a sentence to describe the meaning

castortr0y [4]

Answer:

5.5

Step-by-step explanation:

y = 0.5x + 5

Use the slope-intercept form to find the slope and y-intercept.

Slope: 0.5

y-intercept: 5

Any line can be graphed using two points. Select two x values, and plug them into the equation to find the corresponding values.

To find the y intercept using the equation of the line, plug in 0 for the x variable and solve for y.

y = 0.5(0) + 5

y = 5

To graph the y intercept using the equation of the line, plug in 1 for the x variable and solve for y.

y = 0.5(1) + 5

y = 5.5

Which means when x is 0, y intercept at 5 and when x is 1 y intercept at 5.5. Graph the line using the slope and the y-intercept, or the points.

This tells us, in practical terms, that, for every one unit that the x-variable increases (that is, moves over to the right), the y-variable increases (that is, goes up) by 50% of a unit.

6 0

4 years ago

What kind of taxes are likely to pay for universities and police? a. local taxes b. state taxes c. federal taxes d. income taxes

shusha [124]

The best choice is B, state taxes !

7 0

3 years ago

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1+1=?, Plz Helppp meeeeeeeeeeeeeeeeeee

kramer

Answer:

2 is teh answer

Step-by-step explanation:

7 0

3 years ago

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5. Sam rolled a standard number cube 20 times. He rolled a five 6 times. What is the experimental probability of rolling a 5 bas

topjm [15]

Experimental probability is the ratio of number of times the event is occurring to the total number of the trials of the experiment. This implies that it is a ratio of the number of times an event is occurring to the total number of times that the activity has been repeated. Thus we shall use the formula:
Experimental probability=(# of occurrence of the event)/(total # of trials made)
=6/20
=3/10
Answer: 3/10

8 0

3 years ago

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