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telo118 [61]
3 years ago
5

One person can complete a typing project in 6 hours, and another can complete the same project in 9 hours. How long will it take

the two people working together to complete the project?
Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
7 0

Answer:

3.6 hours

Step-by-step explanation:

One person can complete a typing project in 6 hours,

Hence, in 1 hour, 1/6 of the project is completed by person A

Another can complete the same project in 9 hours.

Hence, in 1 hour, 1/9 of the project is completed by person B

Let the number of hours of completing the project be represented by 1

Hence,

x/6 + x/9 = 1

We find the L.C.M

9x + 6x/54= 1

15x/54 = 1

Cross Multiply

15x = 54

x = 54/15

x = 3.6 hours.

Therefore, both people can complete the project in 3.6 hours.

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3 0
3 years ago
What is the surface area of a sphere with radius 4?
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Answer:

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Step-by-step explanation:

The surface area of a sphere is given by

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SA =64 pi

SA =200.96

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dos empresas de computadoras tienen el mismo precio en la lista de artículo una empresa ofrece El 25% y el 15% de descuento la o
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Step-by-step explanation:

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3 years ago
What is the difference of the polynomials? (â€""2x3y2 4x2y3 â€"" 3xy4) â€"" (6x4y â€"" 5x2y3 â€"" y5) â€""6x4y
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Polynomial-An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable. The difference between the given polynomials is

=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5

Given-

We have given two function of variable <em>x </em>and <em>y</em>

(-2x^3y^2 + 4x^2y^3-3xy^4)

(6x^4y-5x^2y^3-y^5)

<h3>Polynomial</h3>

An expression of two or more algebraic terms, which is the sum or difference of the several terms with having different power of the only variable.

Now we have to subtract the two equations to find the difference,

(-2x^3y^2 + 4x^2y^3-3xy^4)-(6x^4y-5x^2y^3-y^5)

Multiply the sign into the bracket to open the bracket and further solution,

=-2x^3y^2 + 4x^2y^3-3xy^4-6x^4y+5x^2y^3+y^5

Arrange the similar terms in the same groups,

=-2x^3y^2 + (4x^2y^3+5x^2y)-3xy^4-6x^4y+y^5=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5

Hence, the difference between the given polynomials is=-2x^3y^2 + 9x^2y^3-3xy^4-6x^4y+y^5

For more about the polynomials, follow the link below-brainly.com/question/17822016

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3 years ago
Use the information to determine the exact trigonometric value sin theta =-1/5, pi
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Step-by-step explanation:

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