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Nat2105 [25]
3 years ago
10

Please help me! Easy question! Please help!

Mathematics
2 answers:
Elena L [17]3 years ago
7 0

Answer:

I am pretty sure that it's C

Step-by-step explanation:

you need to do a^2+b^2=c^2

levacccp [35]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Use a^2 + b^2 = c^2 in each case.

A.

9^2 + 12^2 = 15^2

81 + 144 = 225

225 = 225 True

Right triangle

B.

2^2 + 6^2 = (sqrt(38))^2

4 + 36 = 38

40 = 38 False

No right triangle

C.

3^2 + 9^2 = (sqrt(91))^2

9 + 81 = 91

90 = 91 False

No right triangle

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Hey. Let me help you on this one.

In order for us to solve this problem, we will be needing to find both length and width of the triangle on this coordinate plane. We will also need to know how to use the triangle area formula. 

I will be attaching an image containing the shown difference between a rectangle, and a triangle, and on how to understand why the area of a triangle is like this.

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