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3 years ago

3.The legs of a right triangle are equal. Given the length of the legs, find the length of the hypotenuse. Round

Mathematics

1 answer:

miskamm [114]3 years ago

5 0

Step-by-step explanation:

This sounds like you need to use Pythagorean therum which is A^2+B^2=C^2

a(squared)+ B(squared)=C(squared) and at the end try to use √ to get your answer.

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Triangle DEF is a right triangle. If FE=5 and DF=13, find DE.

Nadya [2.5K]

Answer:

Step-by-step explanation:

I am amusing you are looking for the hypotenuse since this is middle school.

If you have the legs and are looking for the hypotenuse you use the Pythagorean Theorem $a^{2} + b^{2} = c^{2}$

The legs are a and b, and the hypotenuse is c

The work would look like this

$13^{2} + 5^{2} = c^{2} \\169+25= c^{2} \\194= c^{2} \\\sqrt{194} = \sqrt{c^{2} } \\13.9283883... = c$

extra notes

I rounded to 13
If you didn;t know you cancles exponents with roots

so the $c^{2}$ is cancled by aka $\sqrt{c}$

Hope this helped :)

4 0

3 years ago

Which of the following choices simplified the expression:

forsale [732]

<h2>Hello!</h2>

The answer is:

The correct option is the second option:

$\frac{5}{2},\frac{-1}{2}$

We are given the following expression:

$\frac{2+-\sqrt{9}}{2}$

Now, solving we have:

First solution:

$\frac{2+\sqrt{9}}{2}=\frac{2+3}{3}=\frac{5}{2}$

Second solution:

$\frac{2-\sqrt{9}}{2}=\frac{2-3}{3}=\frac{-1}{2}$

Hence, we have that the correct option is the second option:

$\frac{5}{2},\frac{-1}{2}$

Have a nice day!

5 0

3 years ago

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Solve for x. Round to the nearest tenth, if necessary.

Igoryamba

Answer: $33.2$

Step-by-step explanation:

Given

CE=85

$\angle C=67^{\circ}$

In $\triangle CDE$ , using trigonometry

$\Rightarrow \cos 67^{\circ}=\dfrac{CD}{CE}\\\\\Rightarrow CD=CE\cos 67^{\circ}\\\\\Rightarrow CD=85\times \cos 67^{\circ}\\\\\Rightarrow CD=33.2$

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3 years ago

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Please help! D: (taking a quiz pls hurry)

Nina [5.8K]

I think it’s a and gl on ur quiz

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3 years ago

!!HELPPP!!Drag each label to the correct location on the figure. Not all labels will be used.

wlad13 [49]

Answer:

it is 46 ,101,79,59 starting from left side angle

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3 years ago

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