Step-by-step explanation:
Compare the longest side to the other 2 shorter sides of the triangle:
10² : 7² + 8²
= 100 : 113
Since 7² + 8² > 10², it is an acute triangle.
Answer:
c
Step-by-step explanation:
The answer is 26, because the greatest the side of a triangle can be is the sum of the two lengths. (12+14=26)
Answer:
A and B are correct
Step-by-step explanation:
if x:y is 1:3 then x is 1 and y is 3
1/3 of 3 is 1 so A is correct
3/4(1+3) is 3 so B is correct
But
1/4 × 3 is not 1 so C is not correct
3/4 ×1 is not 3 so D isn't correct
Let's set it up like this:

Find the LCD, which is 12, and adjust them according to that.

Divide.

Cancel the common factor, which is 12.

That would be our answer!
Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish