3 years ago

Type the correct answer in the box. Round your answer to two decimal places.

Mathematics

2 answers:

kondor19780726 [428]3 years ago

5 0

Answer:

1.29

Step-by-step explanation:

sine23=x/3.3

svp [43]3 years ago

3 0

Angle TRQ is 23 degrees and the length from S to R is 3.3 units.

I need help on this too

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If the cost of an item increased by a percentage and decreased by the same percentage, what would that percentage be if the new

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The percentage, if the new cost was 84% of the original is 40%

Let the cost of the item be x.

When the price increased by y%, the new price is:

$New =x \times (1 + y\%)$

When the price decreased by the same percentage (i.e. y%), the new price is:

$New =x \times (1 + y\%) \times (1 - y\%)$

The cost is said to be 84% of the original price.

So, we have:

$x \times (1 + y\%) \times (1 - y\%) =84\% \times x$

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Apply the difference of two squares

$1 - (y\%)^2 =84\% \\\\$

Subtract 1 from both sides of the equation

$- (y\%)^2 =-16\%$

Cancel out the common factors

$(y\%)^2 =16\%$

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$y =40$

Hence, the percentage is 40%

Read more about percentage change at:

brainly.com/question/809966

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