B. 361/4
you get: x^2-19x+361/4=(x-19/2)^2
Hey I got to it c c c c c c c c c c c c c c c c 8 8
Answer: Because 7 8 9
Step-by-step explanation:
Answer:
42km
Step-by-step explanation:
Start with a proportion, to get the number of degrees in 30 seconds:
(150 degrees / 5 seconds) = ('D' degrees / 30 seconds) .
Cross multiply the proportion: (150 x 30) = 5 x D
4,500 = 5 x D
Divide each side by 5 : 900 = D
The globe turns 900 degrees in 30 seconds.
How many rotations is that ?
Each rotation is 360 degrees.
So 900 degrees is
(900 / 360) = <em>2.5 rotations</em> in 30 seconds.
