MATHEMATICS MIDDLE SCHOOL

A CD makes 581/2 revolutions in 2/4 min.
Complete the unit rate.

Answers

Answer 1
Answer: In 2/4 minutes the number ofrevolutions a CD makes = 58 ½                                                                                       = 117/2
Then
In 1 minute the number ofrevolutions the CD will make = [(117/2)/(2/4) ] * 1                                                                                        =(117 * 4)/(2 * 2)                                                                                        = 117
So it can seen that the CD revolves at the rate of 117 revolutions per minute. I hope this is the answer you were looking for. The procedure for solving this problem is easy for you to understand i hope.

Answer 2
Answer: A CD makes 58 1/2 revolutions in 1/2 minutes.

A CD makes 58.5 revolutions in 0.5 minutes.

Multiply both numbers by 2.

A CD makes 117 revolution in 1 minute.

Related Questions

Titus works at a hotel. Part of his job is to keep the complimentary pitcher of water at least half full and always with ice. When he starts his shift, the water level shows 4 gallons, or 128 cups of water. As the shift progresses, he records the level of the water every 10 minutes. After 2 hours, he uses a regression calculator to compute an equation for the decrease in water. His equation is W –0.414t + 129.549, where t is the number of minutes and W is the level of water. According to the equation, after about how many minutes would the water level be less than or equal to 64 cups? 150 minutes 160 minutes 170 minutes 180 minutes
Please help ! 20 POINTS
Find the answer to the nearest tenth. The length of the base of a triangle is 3 times the length of its altitude. Find the length of the base if the area of the triangle is 54 m^2.
Simplify the expression 7y+6-1+12y
A restaurant has a profit of $13,000 in general the profit will increase by $150 each month for 11 months what will the total profit be over the 12 month period

5 × 10/12 what is the product?

Answers

Answer:

Step-by-step explanation:

10 divided by 12= 0.83

0.83 times 5= 4.16 or  26/625

Which formula would you use to round the number in cell B5 to the nearest 10

Answers

you would use =ROUND(B5,-1)

A rate of 4 centimeters per second is equal to how many meters per hour? 4 centimeters per second = meters per hour

Answers

The rate of 4 centimeters per second is equal to 144 meters per hour.

What is unit conversion?

A conversion factor is a ratio that expresses how many of one unit are equal to another unit. To convert a smaller unit to a larger unit (eg to ), divide it by the number of smaller units which are needed to make larger unit. To convert from a larger unit to a smaller one, multiply. To convert from a smaller unit to a larger one, divide.

For the given situation,

4 centimeters per second is equal to how many meters per hour.

1 centimeter = (1)/(100) meters

⇒ 4 centimeter = (4)/(100) meters

⇒0.04 meters

1 second = (1)/(3600) hours

Thus 4 centimeters per second = (0.04)/(1) ÷ (1)/(3600)

⇒ 0.04 × 3600

⇒ 144

Hence we can conclude that the rate of 4 centimeters per second is equal to 144 meters per hour.

Learn more about conversion here

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4cm/s in m/h
First step, work out how many seconds in an hour
(seconds) 60 x (minutes) 60
60 x 60 = 3600 seconds in an hour
1 seconds = 4 cm
x3600 to get the distance in cm/h
3600 seconds (1 hour) =  14,400cm
Divide by 100 for m/h
14400/100 = 144 meters per hour

For Exercises 16-23, list the common factors of each pair of numbers. Then find the greatest common factor of each pair.

Answers

Answer is 25 and 150

Which fraction, decimal number, and percent are equivalent? A. 2/5, 0.40, 40%
B. 2/4, 0.92, 34%
C. 125/1,000, 0.04, 87%

Answers

Answer:

A. 2/5, 0.40, 40%

Step-by-step explanation:

To turn a fractions into a decimal divided the numerator by the denominator. 2/5=0.40.

A. (-4, 10) and (-3,9)
The rate of change between these two points is

Answers

The answers is 2 units
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$350 at 3% for 10 years
a used bookstore also started selling used CDs and videos. In the first week the store sold a combination of 40 CDs and videos. They charged $4 CD and $6 per video and the total sales were $180. Determine the total number of CDs and videos sold
Use the distributive property to write an equivalent expression for8(y-7)