Answer:
a) -3/13
b) -1/8
Step-by-step explanation:
a) - (21 / 7) / (91 / 7) = 3/13
b) (32 / 32 ) / - (256 / 32) = -1/8
The TV screen is an illustration of a right triangle
The height of the TV screen is 124.6 cm
<h3>How to calculate the height</h3>
The diagonal is given as:
d = 156 cm
The angle at the top is given as:
Angle = 37 degrees
The height is then calculated using the following cosine ratio

Make h the subject

Evaluate
h = 124.6
Hence, the height of the TV screen is 124.6 cm
Read more about right triangles at:
brainly.com/question/2437195
3•3=9 so D. x^2=9 is correct.
Answer:A
It can not be c and d
Equation 1 has a negative 1/4
So equation one is the answer