Answer:
d. the fourth graph
Step-by-step explanation:
this is correct on edge 2020
Answer:
<em>Equation: 10t=400</em>
<em>It will take them 40 hours to be 400 miles apart.</em>
Step-by-step explanation:
<u>Constant Speed Motion</u>
If the speed of an object is v, the distance traveled in a time t is:
Ms. Ironperson travels at 50t (not speed, but a distance), and Mr. Thoro travels at 60t. Since the latter travels faster, the distance between them at time t is given by:
To be 400 miles apart, we set the equation:
10t=400
Solving:
t=400/10=40
It will take them 40 hours to be 400 miles apart.
Note: Some assumptions were made in this question:
- The rates are not speeds but distances
- The distances are in miles
Answer:
$70.88
Step-by-step explanation:
He bought the boots for $80*75% = $80*0.75 = $60
Let x = the original price of the belt
He spent x * 85% = 0.85x for the belt
total cost = 60 + 0.85x = 120.25
0.85x = 120.25 - 60 = 60.25
x = 60.25/0.85 = $70.88
Answer:
15,700 cubic feet
Step-by-step explanation:
The formula for the volume of a cylinder is ...
V = πr²h
where r is the radius (half the diameter), and h is the height.
Put the given numbers into the formula and do the arithmetic.
V = (3.14)(10 ft)²(50 ft) = 15,700 ft³
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An estimate of the arithmetic will get you to the right answer choice:
πr²h = π(100)(50) = 5000π ≈ 3×5000 = 15,000 . . . . close to 15,700