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sergeinik [125]
3 years ago
6

It takes Henry 2 hours to paint a room. It takes Louisa three hours to paint the same room. If they work together, how long will

it take them to paint the room?
Mathematics
1 answer:
maxonik [38]3 years ago
3 0

Answer:

amount of time it'll take Henry and Louisa = 6/5 hours

Step-by-step explanation:

Number of hours it takes Henry = 2hrs

Henry's one hour work = 1/2

Number of hours it takes Louisa = 3 hrs

Louisa's one hour work = 1/3

Hence Louisa and Henry one hour work = 1/2+1/3 = 5/6

Hence amount of time it'll take Henry and Louisa = 6/5 hours

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I don't understand rational and irrational numbers
PSYCHO15rus [73]

A rational number is a number which can be expressed as a fraction whose numerator and denominator are both integers and whose denominator is not equal to zero. Rational numbers include all integers, fractions, mixed numbers, and some decimal numbers.

 

Note : All terminating and repeating decimal numbers are rational numbers because those numbers can be expressed as a fraction. On the other hand, a non repeating number and non terminating decimal, like square root of 2, is an irrational number.  


\dfrac{7}{16} \ as \ a \ decimal = 0.4375


Set \ up \ the \ long \ division. 


Calculate \ 70 \div 16, \ which \ is \ 4  \ with \ a \ remainder \ of \ 6.




Bring \ down \ 0, so \ that \ 60 \ is \ large \ enough \ to \ be  \ divided \ by \ 16.




Calculate \ 60 \div 16, which \ is \ 3 \ with \ a  \ remainder \ of \ 12.




Bring \ down \ 0, so \ that \ 120 \ is \ large \ enough \ to \ be \ divided \ by \ 16.




Calculate \ 120 \div 16, which \ is \ 7 \ with \ a \ remainder \ of \ 8.




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Decimal = 0.4375&#10;

4 0
2 years ago
Please help!! <br>circles combos are too hard​
malfutka [58]

Answer:

56 + 53pi

Step-by-step explanation:

<u><em>Area of small circles:</em></u>

diameter of small circle: 4cm

forumla to find area of circle: A = pir^2

r is radius = half of diameter -> d/2 = 4 / 2 = 2cm

A = pi (2cm)^2

A = pi (4cm)

A = 4pi

<u><em>Area of large circle:</em></u>

diameter of small circle: 4cm

forumla to find area of circle: A = pir^2

r is radius = half of diameter -> d/2 = 14 / 2 = 7cm

A = pi (7cm)^2

A = pi (49cm)

A = 49pi

<u><em>Area of rectangle:</em></u>

Area = width x length

Area = 14cm x 4cm

Area = 56cm

<u><em>Add all three areas:</em></u>

Area of rectangle + large circle + small circle

56cm + 49pi + 4pi = 56cm + 53pi

7 0
2 years ago
How would using a number line to find the sum -2+ -5?
Gelneren [198K]

Answer:

In finding the sum of 2+5 you would go right on the number line, while in finding the sum of -2+(-5) you would go left on the number line

Step-by-step explanation:

3 0
3 years ago
Question 7 of 10<br> Choose two statements that are true for this expression.<br> 6r³ − 8x² - 40 +21
crimeas [40]

Based on the given parameters, bhe true statements are: the expression has four terms, and the term -40/y is a ratio.

<h3>How to determine the true statements?</h3>

The expression is given as:

6x^3 - 8x^2 - 40/y + 21

The above expression has four terms, and the terms are:

6x^3, - 8x^2,- 40/y and 21

Also, the term -40/y is a ratio

This is so because it is a quotient of two numbers

Hence, the true statements are: the expression has four terms, and the term -40/y is a ratio, based on the given parameters

Read more about polynomials at:

brainly.com/question/2833285

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4 0
1 year ago
on a bulletin board the principal ms gomez put 115 photos of the fourth grade students in her school she put the photos in 5 equ
avanturin [10]
So 115 divided by 5 is 23, so the answer is 23.
5 0
3 years ago
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