Answer:
In a 30-60-90 triangle, the hypotenuse (or diagonal) times .5 equals the short side or the width (height) of the tv.
width or height = 15
and the "medium" side = 30 * (sqrt (3) /2).
medium side = 30 * (1.732 / 2)
medium side = 30 * .866
medium side (or width)= 25.98
so the exact width and height is:
width = 25.98
height = 15
Source: https://www.1728.org/trig2.htm
Step-by-step explanation:
Answer:
67 square units
Step-by-step explanation:
Circumference/pi = diameter
29/3.14 = 9.24
Radius = 9.24/2 = 4.62
A = pi * r^2
A = 3.14 * 4.62^2 = 67 square units
Answer:
33.33 mL of 50%
66.67 of 80%
Step-by-step explanation:
Let x = quantity of 50% methane.
Then,
0.50x + 0.80(100 - x) = 100 × 0.70
⇒ 0.50 x + 80 - 0.80 x = 70
⇒ -0.30 x = 70 - 80
⇒ -0.30 x = -10
⇒ 
⇒ x = 33.33 mL of 50%
and, 100 - 33.33 = 66.67 of 80%