Mathematics, 08.01.2021 01:50 madi6847

I need to use the Pythagorean Theorem to find X. I don’t know how to do that!!

Answers: 2

Show answers

Answers

Answer from: fickllyd000

17) x=8

18) $x=\sqrt{189}$ or $x= 3\sqrt{21}$

Step-by-step explanation:

So the rule is $a^{2} +b^{2} =c^{2}$ , "c" being the hypothenuse, or the long line that is opposite to the right angle.

17) We know that both values of x are equal to each other, which makes everything 10x easier!

$x^{2} +x^{2} =(8\sqrt{2}) ^{2}$

(by the way we know the x values are our a and b values because they are legs! the way I like to remember the legs is that they are connected to the right angle box, and therefore support the hypothenuse)

simplify (╥︣﹏╥)

$2x^2=8^2(\sqrt{2} )^{2}$

2x^2=64(2)

2x^2=128

$x^{2}= 128/2$

$x^{2} =64$

x=8

18) Just pretend that the flipped triangle doesn't exist. It's parallel to the other triangle with values on it, and basically servers no purpose other than being parallel to the sister triangle :)

Anyways, since we know the hypothenuse (15) but we don't know one of our leg values (x), we're going to change our equation a bit!

$c^{2} - b^{2} = a^{2}$

It doesn't matter if you put the one leg value in a or b, just as long as you stick to that same equation you started with the entire time!

$15^{2} -6^{2} =x^{2}$

$225-36=x^{2}$

$x^{2} =189$

$x=\sqrt{189}=3\sqrt{21}$

The more you do these, the easier they'll get, so don't worry!

Answer from: Quest

Really long apparently

Answer from: Quest

It is the answers of confederation

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:30, lexigarwood

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

Answers: 3

continue

Mathematics, 21.06.2019 18:00, lclaudettecarte3550

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Answers: 2

continue

Mathematics, 21.06.2019 18:30, budjasdatazaki467

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Answers: 1

continue

Mathematics, 21.06.2019 19:40, shikiaanthony

An alternative to car buying is to make monthly payments for a period of time, and then return the vehicle to the dealer, or purchase it. this is called

Answers: 3

continue

You know the right answer?

I need to use the Pythagorean Theorem to find X. I don’t know how to do that!!
...