Can a triangle be made from the lengths 5m, 7m, and 9m? If so what kind of triangle; acute, obtuse, or right?

Obtuse.

Step-by-step explanation:

Yes a triangle can be made as  7 + 5 > 9.

Test for an acute triangle:

For acute triangle c^2 < a^2 + b^2  where c is the longest side.

For  right  triangle c^2 = a^2 + b^2  where c is the longest side.

For  obtuse triangle c^2 > a^2 + b^2  where c is the longest side.

Here:

9 ^2 = 81 = c^2

5^2 + 7^2 = 25 + 49 = 74 = a^2 + b^2.

- so the triangle is not acute.

Here c^2 > a^2 + b^2 therefore the triangle is Obtuse.

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: