<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B20%7D%7B16%7D%20%2A%20100" id="TexFormula1" title=" \frac{20}{16} * 100" alt=" \f

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Sladkaya [172]

3 years ago

rac{20}{16} * 100" align="absmiddle" class="latex-formula">

Mathematics

1 answer:

mart [117]3 years ago

8 0

125% because sixteen is equal to a whole which is equal to one-hundered and one fourth of sixteen is four and sixteen plus four is twenty. one fourth of one-hundered is twenty-five so you add the twenty-five to the one-hundered and you get 125%

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PLEASE HELP!<br> simplify this expression <br><br> 4(7x + 5y)

BARSIC [14]

28x + 20y should be it.

4 0

3 years ago

The diagonal of a TV set is 13 inches long. It’s length is 7 inches more than the height. Find the dimensions of the TV set.

alukav5142 [94]

Answer: The length is 12 inches while the height is 5 inches

Step-by-step explanation: It the Television has a diagonal of 13 inches, and a height of H inches, then the length would be (H + 7) inches. It’s length is 7 inches more than the height. At this point we can draw up a right angled triangle with the hypotenuse as 13 (diagonal side) and the other two sides as H and (H + 7)

Then we can apply the Pythagoras theorem which states that

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169 = 2H^2 + 14H + 49

By collecting like terms we now have

169 - 49 = 2H^2 + 14H

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By re-arranging all terms on one side of the equation, we arrive at

2H^2 + 14H - 120 = 0

Divide all sides by 2

H^2 + 7H - 60 = 0

To solve the quadratic equation, we now factorize and we have,

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Therefore

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H - 5 = 0

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The dimension can not be a negative value so we shall take h equals 5.

Having calculated the height of the television as 5 inches, the length which was given as H + 7 can now be calculated as

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4 0

3 years ago

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elena55 [62]

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The formula for the foci of the vertical ellipse is

(h,k+c) and (h,k-c).

where c is

Our center (h,k) is (2, -5)

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1 year ago

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Step-by-step explanation:

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2 years ago

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3 years ago