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asambeis [7]
2 years ago
8

Match each rational expression to its simplest form. 2m2 - 4m 2(m-2) m2 - 2m +1 m - 1 m2 - 3m + 2 m2 - m m2 - m - 2 m2 - 1

Mathematics
1 answer:
mariarad [96]2 years ago
8 0

Answer:

3m + 3

Step-by-step explanation:

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The diameter of a wheel of a car is 30cm. If the car travels at an average speed of 13.2m/s, find the number of revolutions made
Marysya12 [62]

Answer:

Approximately 50420 revolutions (rounded to the nearest whole number.)

Step-by-step explanation:

Convert the diameter of this wheel to meters: d = 30\; \rm cm = 0.30\; \rm m.

Circumference of this wheel:

\pi \, d = \pi \times 0.30\; \rm m \approx 0.942\; \rm m.

Distance travelled in one hour:

\begin{aligned}v \cdot t &= 13.2 \; \rm m \cdot s^{-1} \times 3600\; \rm s \\ &= 47520\; \rm m\end{aligned}.

Number of revolutions required for covering that distance:

\displaystyle \frac{47520\; \rm m}{(\pi \times 0.30\; \rm m)} \approx 50420.

3 0
2 years ago
What is the square root of 46?
Kazeer [188]
If you estimate
7 times 7=49 so the square root of 46 is less than 7
6 times 6= 36 so the square root of 46 is more than 6
so if you do it on a calculator the answer is 6.78
8 0
3 years ago
Read 2 more answers
Each week, Rosario drives to an ice-skating rink that is 60 miles away. The round-trip takes 2. 75 hours. If he averages 55 mile
mart [117]

Rosario's average speed on her way home is 36.66 miles per hour.

<h2><u></u></h2><h2><u>Average speed</u></h2>

Given that each week, Rosario drives to an ice-skating rink that is 60 miles away, and the round-trip takes 2.75 hours, to determine, if she averages 55 miles per hour on his way to the rink, what is her average speed to return to his house, the following calculation must be made:

  • 55 = 1
  • 60 = X
  • 60 / 55 = X
  • 1.09 = X
  • 2.75 - 1.09 = 1.66
  • 55 = 1
  • 27.5 = 2
  • 55 / 3 x 2 = 36.66

Therefore, Rosario's average speed on her way home is 36.66 miles per hour.

Learn more about averages in brainly.com/question/12322912

4 0
2 years ago
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One-third a number (x) added to one-half the number equals nine less than the number
Anna11 [10]

The answer to your question is:

1/3x + 1/2x = x - 9

8 0
3 years ago
Ali Makes a Four digit number . The sum of the digit is 4 . The thousands digit and the unit digit are the same. The hundreds di
Tcecarenko [31]

Answer:

1021

Step-by-step explanation:

1+1=2 and it needs to add up to 4 so you add in another 2 in the only place left for it to go which is in the tens place because the first and last number have to be the same and 0 has to go in the hundreds place.

3 0
1 year ago
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