Work out the percentage change when 1.20 is increased to 1.80

Mathematics

1 answer:

exis [7]3 years ago

8 0

Answer:

Step-by-step explanation:

PERCENT CHANGE

The percentage change from 1.20 to 1.80 is 50 %

Our percent calculator uses this formula:

((y2 - y1) / y1)*100 = your percentage change

(where y1=start value and y2=end value)

((1.80 - 1.20) / 1.20) * 100 = 50 %

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Read 2 more answers

25 POINTS!

steposvetlana [31]

$-\dfrac12x+3=-x+7$

Add -3 to both sides:

$-\dfrac12x+3-3=-x+7-3$
$-\dfrac12x=-x+4$

Multiply both sides by -2:

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On the right hand side, distribute the -2:

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Add -2x to both sides:

$x-2x=2x-2x-8$
$-x=-8$

Divide by -1:

$\dfrac{-x}{-1}=\dfrac{-8}{-1}$
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(and not $x=-8$ , unless the original equation wasn't correctly written/interpreted?)