The first one is 9/25
The second one is 29.44
The last one is 8
Answer:
59.99 minutes
Step-by-step explanation:
4 hours divided by 28 mins = 8.57142857 (rounded to 8.57)
7 x 8.57 = 59.99.
Any number divided by 1 equals the original number.
See the attached picture:
Answer:
<em>-4 4/5 deg F</em>
Step-by-step explanation:
3 pm: 5 1/5 deg
2 1/2 deg per hour for 4 hours = 2 1/2 deg * 4 = 10 deg
7 pm: 5 1/5 deg - 10 deg = -4 4/5 deg
Picture a right triangle whose hypotenuse is of unknown length. Let's call that length L. The triangle side opposite the 70 degree angle is then 20 feet. I'd suggest you actually draw this triangle.
Then, using the definition of the sine function,
sin 70 deg = opp / hyp = (20 ft) / L. Transforming this equation, L sin 70 deg = 20 ft. Solving for L:
L = (20 ft) / (sin 70 deg) = 21.28 ft
The ladder length must be 21.28 ft.
