$ut = \sqrt{ {6}^{2} + {5}^{2} } \\ \sqrt{36 + 25} \\ \sqrt{61 } \\ using \: cosine \: rule \\ cos \: u = \frac{ {5}^{2} + 61 - 36 }{2 \times 5 \times \sqrt{61} } \\ \\ = \frac{25 + 61 - 36}{78} \\ \\ = \frac{50}{78 } \\ \cos \: u = 0.64 \\ m \:u = 50.2$

3 0

3 years ago

Determine whether a triangle can be formed with the given side lengths.

choli [55]

We can use triangle inequality to prove it. What this rule is, it's basically if u add up 2 sides of the triangle, the length must be longer than the third side, check all 3 sides, and if all sides matches with the rule, a triangle is possible.

5 0

3 years ago

Zita made 1 5/8 quarts of punch. then she made 1 7/8 more quarts how much punch did she make in all?

katrin [286]

<span>5.5 cups hopes that helps you</span>

6 0

3 years ago