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3 years ago

If you want brainlest thanked every day and 5 starred do this!

Mathematics

2 answers:

Otrada [13]3 years ago

7 0

Answer:

<h2>Hakims car goes faster.</h2>

Step-by-step explanation:

Hakims car goes 600ft in 20 secs and andre's motorcycle goes 600ft in 24secs

vodka [1.7K]3 years ago

3 0

Answer:

Andre's Motorcycle

Step-by-step explanation:

You need to find the feet per second which will show you which one is fastest.

Hakim's Car: 600 divided by 20= 30 ft per second.

Andre's Motorcycle: 300 divided by 12= 25 feet per second.

You might be interested in

Suppose theta(????) measures the minimum angle between a clock’s minute and hour hands in radians. What is theta′(????) at 4 o’c

makvit [3.9K]

Answer:

$\frac{\pi }{30}$ radians per minute.

Step-by-step explanation:

In order to solve the problem you can use the fact that the angle in radians of a circumference is 2π rad.

The clock can be seen as a circumference divided in 12 equal pieces (because of the hour divisions). Each portion is $\frac{1}{12}$

So, you have to calculate the angle between each consecutive hour (Let ∅ represent it). It can be calculated dividing the angle of the entire circumference by 12.

∅= $\frac{2\pi }{12} = \frac{\pi }{6} rad$

Now, you have to find how many pieces of the circumference are between 12 and 4 to calculate the angle (Because 4 o'clock is when the minute hand is in 12 and the hour hand is in 4)

There are 4 portions from 12 to 4, so the angle (Let α represent it) is:

α= $(4)\frac{\pi }{6} = \frac{2\pi }{3}$

But the answer is asked in radians per minute. So you have to divide the angle by the amount of minutes between the hands of the clock at 4 o'clock.

There are 60 divisions in a clock for representing minutes, therefore in every portion there are:

$\frac{60}{12} = 5$ minutes

So, from the 12 mark to the 4 mark there are 20 minutes

The angle per minute is:

α= $\frac{2\pi/3 }{20} = \frac{2\pi }{(20)(3)} = \frac{\pi }{30}$ rad/min

Notice that the minimum angle is the angle mesured clockwise.

4 0

3 years ago

The population, y, of a small town can be represented using a quadratic model. The maximum population, 6,000 people, occurred 20

Harlamova29_29 [7]

Y = –2(x – 20)^2 + 6,000

Hope This Is Sufficient !!

3 0

3 years ago

Read 3 more answers

Find the volume V obtained by rotating the region bounded by the curves about the given axis.

BartSMP [9]

Using the disk method, the volume is given by the integral

$\displaystyle \pi \int_{\pi/2}^\pi (9\sin(x))^2\,\mathrm dx = 81\pi \int_{\pi/2}^\pi \sin^2(x)\,\mathrm dx$

That is, each disk has a radius of y = 9 sin(x) and hence area = π (9 sin(x))². Add up infinitely many such disks by integrating. Then the volume is

$\displaystyle 81\pi \int_{\pi/2}^\pi \sin^2(x)\,\mathrm dx = \frac{81\pi}2 \int_{\pi/2}^\pi (1-\cos(2x))\,\mathrm dx \\\\ =\frac{81\pi}2 \left(x-\frac{\sin(2x)}2\right)\bigg|_{\pi/2}^\pi \\\\ = \frac{81\pi}2 \left( \left(\pi-\frac{\sin(2\pi)}2\right) - \left(\frac\pi2 - \frac{\sin(\pi)}2\right) \right) \\\\ = \boxed{\frac{81\pi^2}4}$