The triangle has 3 sides and with information answer is C. Y = 1/4
Answer:
B
Step-by-step explanation:
<STR = <SRT Given the markings of the triangle
<STR + <STU = 180 Supplementary angles
(2x - 9) + 7x = 180 Remove the brackets
2x - 9 + 7x = 180 Combine
9x - 9 = 180 Add 9 to both sides
9x = 180 + 9 Combine
9x = 189 Divide by 9
9x/9 = 189/9
x = 21
If you list the answer choices, I might be able to help you better.
The surface area<span> of any </span>prism<span> is the total </span>area<span> of all its sides and faces. A </span>triangular prism<span> has three rectangular sides and two </span>triangular<span> faces. </span>To find<span> the </span>area<span> of the rectangular sides, use the </span>formula A = lw, where A = area, l = length, and h = height.
The formula <span>A=<span>1/2 </span>bh</span><span> </span>
