If this is an equilateral triangle, we need half of it to find the height which is a leg of a right triangle with a hypotenuse of 15. That means that the base of this half triangle is 7.5. Use Pythagorean's Theorem to fine the height.

. x = 12.99 or 13
Answer:
7y
Step-by-step explanation:
Answer:
first one is 5.8
second on is 4.47 round
third one is 1.92
Step-by-step explanation:
5x2(3x-1)+2(3x-1)factoring furhter gives(5x2+2)(3x-1)