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4 years ago

Find the percent change from $20 to $25.

Mathematics

2 answers:

Shtirlitz [24]4 years ago

8 0

The percent of change is 25% you can calculate this by <span>Difference = New Number - Original Number</span>

Sever21 [200]4 years ago

7 0

Answer:

25%

Step-by-step explanation:

25-20=5 divide by 20 = .25 then multiply by 100 and get 25 so it is a percent and you know it went up so it is increasing then the answer is 25% increase

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− 4/5 (− 3/8 n +6n+2)-n

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Answer:

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3 years ago

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Georgia [21]

I think I only know the answers to 4 and 5 :)

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4 years ago

Complete the equation of the line through (-10,-7) and (-5, -9).<br>Use exact numbers,

steposvetlana [31]

Answer:

$y=\frac{-5}{2}*x + 18$

Step-by-step explanation:

A line in 2-dimensional space has the following general equation:

$y=m*x+b$

Where m is the slope of the line, and b just a number

the slope can be obtaine using th following formula:

$m=\frac{x_{2} - x_{1} }{y_{2} - y_{1}}$

The point 2 is the one with the smallest value for x, that is (-10,-7) and the Point 1 is any other that belongs to the line, in this case, (-5,-9)

$m=\frac{-5 - (-10) }{-9 - (-7)}$

Resulting that $\frac{-5}{2}$

To find the other term we can use any other point, I prefer us the first one so...

We have the following equation:

$-7=\frac{-5}{2}*(-10)+b$

Resulting that b=18

I just have to eval the point (-10,-7) in the equation stated at the beginning knowin that m was calculated previously.

8 0

3 years ago

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Determine the slope of the line graphed by 5y + 6x - 2 = 0

liq [111]

The slope of the line would be - 6/5 x by just taking a look at the equation

3 0

4 years ago

Find the equation, in standard form, of the line passing through the points

LuckyWell [14K]

Answer:

Step-by-step explanation:

To solve for the slope:

(2-(-3))/(4-2)=5/2

y=5/2x+b

plugin points:

2=5/2(4)+b

2=10+b

b=-8

so equation of the line is y=5/2x-8

and in standrd form its 5x-2y=16

6 0

3 years ago