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2 years ago

Rational expressions are often used in combining rates of work.

Mathematics

1 answer:

denis-greek [22]2 years ago

7 0

Rational expressions are often used in combining rates of work. Therefore, it's true.

<h3>What is rational expression?</h3>

It should be noted that a rational expression is simply defined by a rational fraction.

They're are used in combining rates of work. Fir example, if Mr John performs 1/2 of his work and does 1/3 on another day. This can be expressed as:

= 1/2 + 1/3

= 5/6

Learn more about rational expression on:

brainly.com/question/2264785

#SPJ1

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Plz do this i will mark you brainlist and thats for 70 points!!!!

My name is Ann [436]

Answer:

First find the circumference of both wheels

C = pi d

Large wheel = 3.14 * 60

= 188.4

Small wheel = 3.14 * 18

= 56.52

Divide them both with divide 600 by the circumference

Large wheel = 600/188.4 = 3.18 or 3 rotations

Small wheel = 600/56.52 = 10.61 or 11 rotations

b. 2 large wheels. This is because you can cover more distance with large wheels that small wheels. Large wheels are also worth the energy.

Hope this helps

8 0

3 years ago

Read 2 more answers

Tickets to the movies are $7 for adults and $4 for children. If 272 tickets

rewona [7]

Answer:

202 tickets for adults were sold and 70 tickets for children are sold.

Step-by-step explanation:

Solve this question using simultaneous linear equation.

•Let the number of tickets sold for adults be a

•Let the number of tickets sold for children be b

The question stated that 272 tickets were sold altogether. So:

$a + b = 272$

Now, make sure that only one of the unknown values remain on the left hand side. For example:

$a = 272 - b$

I will refer to the above equation as equation 1.

Now, the question also stated that the tickets sold $1694. This means that:

$7a + 4b = 1694$

I will refer to this equation as equation 2.

Now, substitute equation 1 into equation 2 by replacing the a in equation 2 with the values on the right hand side in equation 1. For example:

$7(272 - b) + 4b = 1694$

Then just solve the equation by finding the value of b.

$7(272 - b) + 4b = 1694 \\ 1904 - 7b + 4b = 1694 \\ 1904 - 3b = 1694 \\ 1904 - 1694 = 3b \\ 210 = 3b \\ b = 210 \div 3 \\ = 70$

Lastly, find the value of a. Just take the value of b and then substitute into equation 1.

$a = 272 - b \\ = 272 - 70 \\ a = 202$

4 0

3 years ago

Jasmine earns $11 per hour. She worked 6 hours on Friday, 4 hours on Saturday, and 7 hours on Sunday. How much money did Jasmine

Arisa [49]

Answer:
11 x 6= 66
11x 4 = 44
So far we have 110
And 11 x 7 will give us 77 so add that by 110 which will give u 187

6 0

3 years ago

Read 2 more answers

Sam ran 63,756 feet in 70 minutes. What is Sam's rate in miles per hour?

alex41 [277]

Answer:

54648?

Step-by-step explanation:

It’s too complicated to write here so, no coz I’m lazy

Brainliest if correct?

6 0

3 years ago

Write an equation for the line that has a slope of -4 and passes through the point (2,-3)

faltersainse [42]

Answer:

y = -4x + 5

Step-by-step explanation:

y = -4x + b

-3 = -4(2) + b

-3 = -8 + b

5 = b

4 0

3 years ago