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olganol [36]
3 years ago
6

Dirk can clean a playground in 5 hours. Geralyn can clean a playground in only 4 hours. Which of the following can be used to de

termine the amount of time it would take for Dirk and Geralyn to clean a playground together?
Mathematics
1 answer:
denis23 [38]3 years ago
7 0
It would take 1hr because if you subtract the hrs
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Find the difference.
RoseWind [281]
The correct answer is C.
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3 years ago
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Eric's age is 8 and her mother is 42.In how many years time will the mother be 3 times as old as her son
Paul [167]

Answer:

9 years

Step-by-step explanation:

Let's call the amount of years x. We can write

42 + x = 3(8 + x)

42 + x = 24 + 3x

2x = 18

x = 9

4 0
3 years ago
An angle with a measure of would be classified as which type of angle? a. acute b. obtuse c. right d. straight
REY [17]

Since the given angle is less than 60 degrees which is less than 90 degrees, hence the measure that would be classified as the given angle is acute angle.

<h3>Lines and angle</h3>

A line is the shortest distance between two points where. the points where two lines meet is an angle.

There are several types of angles including acute, obtuse, right and straight

For acute angle, the angle is less than 90 degrees

For obtuse, the angle is greater than 90 and less than 180 degrees

For right angle, the angle is 90 degrees

Since the given angle is less than 60 degrees which is less than 90 degrees, hence the measure that would be classified as the given angle is acute angle.

Learn more on acute angle here: brainly.com/question/6979153

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4 0
2 years ago
Omar walked across the room, a distance of 6.75 yards, in 5.3 seconds. Write a unit rate to describe how quickly Omar walked in
adoni [48]

Answer:

1.273584906 yds / second

Step-by-step explanation:

Take the number of yards and divide by the number of seconds

6.75 yds / 5.3 seconds

1.273584906 yds / second

6 0
3 years ago
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Determine the seating capacity of an auditorium with 25 rows of seats if there are 20 seats in the first row, 24 in the second r
omeli [17]
The seats are increasing at a rate of four per row. If you were to write this in an equation, it would be y=4X+20, with 4 as the rate of change, 20 as the original amount of seats, and Y as the total number of seats for X rows. Plug in 25 for X and you'll get an answer of 120 seats.
5 0
4 years ago
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