Answer:
D.
Step-by-step explanation:
D. This contains an x^2 and is called a parabola ( curved line like a U).
Given :
A train travels 110 miles per hour.
To Find :
How fast does the train travel in feet per second.
Solution :
We know, 1 mile = 5280 feet .
1 hour = 3600 s.
So, speed in feet per second is :

Hence, this is the required solution.
Step-by-step explanation:
we know,
sum of all angles on a straight line is 180°.
so according to it,
x + 2x + 3x = 180
6x = 180
x = 180/6 = 30
x = 30°
therefore, value of x is 30°.
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Answer:
4:9 or 4/9
Step-by-step explanation:
4/9 is the simplified version of 24/54.