## Do the ratios 15 cm to 2m and 10 sec to 3 minutes form a proportion?

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As, r1≠r2, So, these two ratios do not form a proportion.

## What is the mean proportion of 4 and 25?

Answer. Answer: The mean proportional of 4 and 25 is 10.

## How do you write time and a half in numbers?

In general, for some number of hours, plus some fraction of an hour, you’d use the number, plus the fraction, plus “hours”, plural. “Four and a half hours.”, “Three and three-quarters hours,” etc. However, for the specific case of 1.5 hours, the usual expression is “an hour and a half”.

## How do you find the proportion of 4 numbers?

If a:b :: c:d or in other words a:b = c: d, then the quantity ‘d’ is what we call the fourth proportional to a, b and c. For example, if we have 2, 3 and 4, 5 are in the proportion such that 2 and 5 are the extremes, then 5 is the fourth proportional to 2, 3, and 4.

## Are 30 40 45 and 60 are in proportion?

Ratio of 30 to 40 = = 3: 4. Ratio of 45 to 60 = = 3: 4. Therefore, 30, 40, 45, and 60 are in proportion.

## How do you bill in 15 minutes increments?

The standard increments used by most firms are as follows.

- 1/10 of an hour (6 min)
- 1/6 of an hour (10 min)
- 1/4 of an hour (15 min)

## What is the mean proportional to 9 and 25?

15

## Is .5 a half hour?

For example 15 minutes (¼ hour) equals . 25, 30 minutes (½ hour) equals . 5, etc.

## How do you write time in hours and minutes?

When writing the time as numerals, you can use either a colon or a period between the hour and the minutes. In some cases, such as in the military, you can even write out a 24-hour time without any punctuation.

## What is 30 minutes on a timesheet?

What is 15 minutes on a timesheet

15 minutes | 0.25 hours |
---|---|

30 minutes | 0.50 hours |

45 minutes | 0.75 hours |

## Is 30 minutes a half hour?

30 minutes is usually a half hour, or half an hour. 90 minutes is ‘an hour and a half.

## How far will it go in 4 and half hour?

Answer and Explanation: There are 270 minutes in 4 and a half hours.

## What is the mean proportional of 4 and 16?

Answer. : . the mean proportional is 8.

## What is a half minute?

Definition of ‘half-minute’ a. 30 seconds. b. (as modifier) a half-minute lead.

## How many minutes are in a half?

30 minutes

## What is the mean proportional of 9 and 16?

12

## How do you write half an hour?

“half-hour” is commonly written with a dash (hyphen) and is a distinct word in the dictionary. So, “a half-hour” = 30 minutes = “half an hour”.

## What is the ratio of 72 to 60 in the reduced form?

6 : 5

## How much is a half hour?

A half-hour is a period of thirty minutes.

## What is the mean proportional of 9 and 4?

6

## What is the ratio of 30 minutes to 2 hours?

2 hours 30 minutes : 60 minutes = 5:2.

## How do you find a proportion?

A proportion is simply a statement that two ratios are equal. It can be written in two ways: as two equal fractions a/b = c/d; or using a colon, a:b = c:d. The following proportion is read as “twenty is to twenty-five as four is to five.”