Question

Ariel completed the work below to show that a triangle with side lengths of 9, 15, and 12 does not form a right triangle.
mc018-1.jpg
Is Ariel’s answer correct?
No, Ariel should have added 122 and 152 and compared that to 92.
No, Ariel should have subtracted 122 from 92 and compared that to152.
No, Ariel should have added 92 and 122 and compared that to 152.
Yes, Ariel’s work is correct.

Answer 1

We will use the  Pythagorean Theorem here:

c^2 = a^2 + b^2

We will use the three sides 9, 15 and 12

15 is the largest side, now we will assume that it is  hypotenuse/c.

15^2 = 9^2 + 12^2

225  = 81 + 144

225 = 255

They are equal so from this we can say this that it is a right angled triangle.

If there is any confusion please leave a comment below.

Answer 2

Answer:

Its 5

Step-by-step explanation:

its really simple