Answer:
0.0016
Step-by-step explanation:
Here's what we know:
4t = 7/10 (4 tasks take 7/10 of an hour)
Divide both sides by 4:
4t / 4 = 7/10 / 4
t = 7/40
So each task is 7/40 of an hour
7/40 n = 1 (Now we want to find the number of tasks completed in 1 hour)
Multiply both sides by 40/7:
n = 40/7
Converting improper fraction to a mixed number:
n = 5 5/7
So the robot will complete 5 5/7 tasks in an hour. If the answer is looking for fully finished tasks and not partially done ones, the you need to round down to 5.
So we can set up a right triangle in this situation with one of the legs being 21.4m and the height being 15m. Then we can use trigonometric formulas to find the angle of elevation of the sun.
Since we have the dimensions for the opposite and the adjacent sides, we can use the trigonometric function tangent to find the angle:
So let's plug this in:
However this is in radians - to convert to degrees, we must use the formula:
So then let's solve for degrees:
So now we know that the angle of elevation is 67.89°.
Answer:
Step-by-step explanation:
<u>Given:</u>
- Time t = 30 min = 0.5 h
- Distance d = 36 miles
<u>Find the speed:</u>
- s = d/t
- s = 36/0.5 = 72 mph