Question

HELP!


http://prntscr.com/1c95l5

Answer 1

b=4 by pythagorean theorem

Answer 2

Can you find b?

Answer 3

yeah i know it is 4

Answer 4

Its not a cuz you do base * height /2

Answer 5

yeah...

Answer 6

I think its B

Answer 7

how?

Answer 8

I know A is not the answer, C is not the answer either

Answer 9

You have a = 3, b = 4, c = 5.
Now look at each choice, and calculate what the choice tells you.
See if 15 is the answer to any of the choices.

Answer 10

D we know the length of side C is 5

Answer 11

A. A = bh/2 = 3*4/2 = 6 Not 15

Answer 12

yeah...

Answer 13

B. tan(theta) = opp/adj = a/b = 3/4 Not 15

Answer 14

C. Perimeter = a + b + c = 3 + 4 + 5 = 12 Not 15

Answer 15

yes i think it is D because 5*3 can be 15

Answer 16

D. Length of side c = 5 Not 15

Answer 17

D. Length of side c is given in the problem as 5.
5 is not 15. You can't just multiply it by a number bec you feel like it.

Answer 18

no i mean the triangle lengths can be in the form of 9:12: 15
is not so?

Answer 19

If D were "3 times the length of side c," then 3 * 5 = 15, and D would be the answer.
But there is nothing in choice D telling you to multiply c by 3.

Answer 20

In other words, A through D are not 15. What's left?

Answer 21

E, so that is the answer !

Answer 22

Correct!

Answer 23

Thanks you cleared the ambiguity! :)

Answer 24

You're welcome. Glad to be of help!