Actually, the answer is not A, if you're saying A is the first choice above. That's incorrect. You will need to use the Geometric mean for right triangles here to figure out what the value of a is. We will use this form: 
. We have a value for YZ of 3; side a is XZ. That means in order to solve this we need WZ, which we can find using pythagorean's theorem. 3^2 + 4^2 = c^2 and 9 + 16 = c^2 and c = 5. Now we fill in accordingly: 
. Cross-multiply to get 3XZ=25 and side XZ is 
. XZ is 25/3 and YZ is 3, so 25/3 - 3 = XY. That means that XY (side a) = 16/3 or 5 1/3, choice B, or the second one down.
John should drive to his workplace and back to home. On the way to the workplace it was raining, so he drove at a speed of 42mph
1 answer:
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Answer:
Obtuse
Step-by-step explanation:
- You have to make sure it is a triangle by adding the smallest and the medium sides, if the result is greater than the bigger side then it is a triangle.
- you then use the Pythagorean theorem to check if the triangle is a right triangle, acute, or obtuse. If
=
then it is a right triangle. If
then it is an obtuse triangle. if
then it is an acute triangle.
-
_
- 9+64_100
- 70_100
- 70<100
in this case is greater than
therefore, is it an obtuse triangle.