Download math-way that’s a good app it will help you with all your math/algebra problems I’m doing a exam so I don’t have time to put all the equations to find the answers sorry :(
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.
Answer:
Check boxes 1 and 3
Step-by-step explanation:
68.25 mph because 273÷4=68.25 so the answer is 68.25 miles per hour
