Jason jogged 2/3 mile in 1/3 hour. What was his speed in miles per hour?
1 answer:
Answer:
I honestly was having the worst time trying to solve this sorry :(, for real idk if any of these are right
i got 2 answers; 1st: ≈0.5 mph
the 2nd; 2 mph
Step-by-step explanation:
Speed =
2/3 miles = 3520 feet
1/3 hours = 20 minutes
------Make a proportion-----
cross multiply------
3520 * 60 = 211200
5280 * 20 = 105600
Divide
---(this is where i got confused cuz 2 doesn't make any sense)--
If you flip them, which makes more sense
hope i helped :(
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Divide the actual building's measurements by the replica's measurements.
The measurements of the actual building are divided by 20 not 12.
The crew member's calculation is incorrect.
The measurements of the actual building are divided by 20 not 12.
The crew member's calculation is incorrect.
Answer: sqrt(2)/2 which is choice D
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Explanation
(3pi/4) radians converts to 135 degrees after multiplying by the conversion factor (180/pi).
The angle 135 degrees is in quadrant 2. We subtract the angle 135 from 180 to find the reference angle
180-135 = 45
Then you can use a 45-45-90 triangle to determine that the ratio of opposite over hypotenuse is sqrt(2)/2
sine is positive in quadrant 2
------------
Alternatively, you can use a unit circle. Refer to the diagram below. In red, I've circled the angle 3pi/4 radians. The terminal point for this angle has a y coordinate of sqrt(2)/2
Recall that y = sin(theta).
