Edwin runs two laps in 12 minutes.

Mathematics

2 answers:

blagie [28]3 years ago

8 0

Answer:6 minutes a lap

for 3 laps = 18

Step-by-step explanation:

12/2 = 6

6 times 3 = 18

Verdich [7]3 years ago

6 0

Well 12 divided by 2 is 6

6 is the unit rate so it would take 6 mins to run one lap.

I’m one hour, he could run 10 laps.

So... it would take 18 minutes to run 3 laps.

You might be interested in

You drive for 30 min at 100 km/h and then stop for 15 min. you then drive for 45 min and 80 km/h. you average speed for the enti

Rasek [7]

<span>So basically you drove 1/2 hour at 100 km/h which works out to a total travel distance of 50 km (you multiply a 1/2 by 100)

Then you drove for 3/4 hour at 80 Km/h which works out to a total travel distance of 60 km (multiply 3/4 by 80)

now you know that you traveled a total of 110 km

now add up all the times 30 + 15 + 45 = 90 minutes or 1.5 hours

now you know that you traveled a total of 110 km in 1.5 hours

so your average speed is 73.33 km/h for the entire trip</span>

4 0

3 years ago

1) Bob can type 2 letters in 4 hours while Bill can do it in 6 hours. How many hours would it take them to type six letters toge

Dahasolnce [82]

1) I think it's 15 hours
2) 21

7 0

3 years ago

Gravel is being dumped from a conveyor belt at a rate of 40 ft3/min. It forms a pile in the shape of a right circular cone whose

Norma-Jean [14]

Answer:

$\frac{dh}{dt}=\frac{160}{169\pi } ft/min$

Step-by-step explanation:

This is a classic related rates problem. Gotta love calculus!

Start out with the formula for the volume of a cone, which is

$V=\frac{1}{3}\pi r^2h$

and with what we know, which is $\frac{dV}{dt}=40$

and the fact that the diameter = height (we will come back to that in a bit).

We need to find $\frac{dh}{dt}$ when h = 13

The thing we need to notice now is that there is no information given to us that involves the radius. It does, however, give us a height. We need to replace the r with something in terms of h. Let's work on that first.

We know that d = h. Because d = 2r, we can say that 2r = h, and solving for r gives us that $r=\frac{h}{2}$ .