Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 33.0 and half the distance at 80.0 . On her return trip, she drives half the time at 33.0 and half the time at 80.0 . What is Julie's average speed on the way to Grandmother's house? What is her average speed on the return trip?
Answers
total distance is 100mi
total time is (50mi / 33) + (50mi / 80)
total time is = 1.52 + 0.625 = 2.145
so average speed going to grandmothers house is 100mi / 2.145 hrs = 46.62 mph
on her return trip
x = V1 x t/2 + V2x t/2
100 = 33t/2 + 80t/2
100 = 113t/2
t = 100x2/113 = 1.7699hrs
average speed = 100mi/1.7699hrs = 56.60mph
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one
Step-by-step explanation:
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Step-by-step explanation:
From the given right angle triangle,
The unknown side represents the hypotenuse of the right angle triangle.
With m∠x as the reference angle,
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In the given right triangle the measure of angle x is 45.7°. The correct option is C 45.7°
Trigonometry
From the question, we are to determine the measure which is closest to the value of x
In the diagram,
Opposite = 8
and
Adjacent = 7.8
Using SOH CAH TOA
We can write that
x = 45.7°
Hence, in the given right triangle the measure of angle x is 45.7°. The correct option is C 45.7°
Here is the Correct question:
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Answers
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Step-by-step explanation:
Given that:
VIP membership :
Membership fee = $27 per year
Amount per movie = $6
Hence ;
Membership fee + (amount per movie * number of movies)
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Non member :
Amount paid per movie = $8.25
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Let Numbe of movies = x
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The first five terms in the sequence are: 6, 12, 18, 24 and 30.