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3 years ago

Find the percent change from 50 to 22

Mathematics

2 answers:

djyliett [7]3 years ago

7 0

Answer:

Step-by-step explanation:

50 - 22 = 28

BARSIC [14]3 years ago

4 0

Answer:

56% decrease or -56.00%

Step-by-step explanation:

1) Find the difference between 50 and 22 as a number.

2) Divide the result from Step 1 by the starting number 50.

3) Multiply the result from Step 2 by 100 to get it in terms of percent.

The three steps above can be made into a formula. Thus, to find the percent change from 50 to 22, we use this formula:

((Y-X)/X)*100 = Percent Change

X is the starting number 50, and Y is the ending number 22 that it changed to When we enter these numbers into the formula, we get:

((22-50)/50)*100 = -56.00%

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Answer: The area of the triangle with the perimeter of 540 cm is approximately 10200 cm²

More exactly: 10182 cm²

Step-by-step explanation: $A=\frac{bh}{2}$

240 × 84.85 = 10182

To get the height of the triangle, it takes some trigonometry;

Given 3 sides of a triangle, it is possible to calculate the angles using the Law of cosines and the formula $cos A =\frac{b^{2} +c^{2} -a^{2} }{2bc}$

We will need the measure of angle A, then use the sine of A to get the height of the line from angle C perpendicular to the base, side b.

We can use the dimensions given in the proportions and then multiply by 10 because the sides given add to a perimeter of 54, one tenth of the 540 cm of the actual triangle. The angles of the similar triangles are congruent.

side a = 19, side b = 24, side c = 11

24² + 11² - 19² is 576 + 121 - 361 = 336

2(24)(11) = 528

cos A = 336 / 528 that is 0.636364 $\cos^{-1}\left(.6363634\right)$ = 50.47°

sin(50.47) = 0.77129

0.77129 × 11 = 8.48 is the height Rounding to 8.5 would be reasonable for this height

Using rounded values here to calculate Area :

85 × 240/2 = 10200 cm²

8 0

2 years ago

Please help!

In-s [12.5K]

Answer: B

Explanation: an isosceles triangle has 2 sides that are the same, so if the base angles are both 34° then you can multiply that by 2 to get 68°. After that you know that you're still missing one of the angles so that missing angle is x. The equation you can set up to solve for x is the following: 68° + x° = 180°

Hope this helped! :)

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2 years ago

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Answer:

Step-by-step explanation:

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Answer:

Step-by-step explanation:

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2 years ago

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dolphi86 [110]

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