Question

BD is an altitude to AC. What is the length of BC?
1, 3.05,
9.22, 13

Answer 1

Is "6" AC or DC ?

Answer 2

DC

Answer 3

Okay, then 6 and 7 are the sides of a right triangle, and BC is its hypotenuse.

Do you know pythagorean's theory?

Answer 4

yes but i think i did something wrong cause i keep getting 12 but thats not the right answer.

Answer 5

You're right. 12 is wrong. :-)

Pythagoras sez that the square of the hypotenuse is equal to the sum of the squares of its sides.

Since we know that 6 and 7 are it's sides, then we just square each side and add them to find the square of the hypotenuse.

Answer 6

Are you there?

Answer 7

yes im still here can you type out the steps for me please?

Answer 8

6^2 + 7^2 = the hypotenuse for this triangle

36 + 49 = 85

85 is the square of the hypotenuse, so BC is sqrt(85)

Answer 9

Hello?

Answer 10

i got 9.4 -.-

Answer 11

Tell me how you got 9.4

Answer 12

square root of 85

Answer 13

Square root of 85 is the correct answer, but the square root of 85 isn't 9.4

Answer 14

ya nvm i got 9.22!

Answer 15

CORRECT!!!! :-)

Answer 16

ok theres this other one that seems so easy but im having a little trouble its asking what the length of MO is when sides MN=2 and NO=1 [right triangle] the answer choices are 3 which is wrong cause i got that. 3squared, 1, & 2.