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enyata [817]
3 years ago
11

I need help!

Mathematics
2 answers:
timama [110]3 years ago
6 0
Fractions,rats, and percents all interconnect. For ext,50%=11/2 =1:2
Anon25 [30]3 years ago
5 0

Answer:

a ration 3:4 can be written as a fraction 3/4 or a percent 75%

Step-by-step explanation:

to go from a fraction to a percent divide the numerator by the denominator and multiply by 100.

3/4 = .75

.75 X 100 = 75%

if something happens 3 out of 4 times (3:4) then it will happen in 75 of 100 instances.

100 x \frac{3}{4} = 75

or using the percentage above (in decimal form)

.75(100) = 75

These are just different methods for representing the same information.

1:4 ration is equal to \frac{1}{4} fraction is equal to 25% (or .25)

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i am honestly not sure if that is standard form?? but i assume it is?? i hope this helps

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almond37 [142]

Radio Barn : 200 + .15 x  x = the weekly sales

Woofer: 300 + .10x

set them equal to find when they are them same

200 + .15x = 300 + .10x

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divide each side by .05

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2.  {x - 5 = -y}

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x = -y+5

multiply each side by -2

-2x = 2y -10

the 2 equations are the same, it has an infinite number of solutions

The system is dependent  since the 2 equations are the same line


3.  {2x = y - 7}

{4x - 2y - 14 = 0}

2x = y-7

subtract y-7 from each side

2x - (y-7) = 0

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subtract the two equations

4x -2y +14 =0

4x - 2y - 14 = 0

---------------------------

               28 = 0

since this cannot happen   the lines will never cross ( parallel lines)

the system is inconsistent

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