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3 years ago

Which property justifies the procedure used to eliminate fractions and decimals from equations?

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

4 0

By multiplying both sides of an equation by a number, you can eliminate all decimals and fractions, so the answer is C.

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tap A fills a tank in 6 hours tap B fills it in 8 hours and tap C empties it in 10 hours. starting with an empty tank and all th

Alex787 [66]

Answer:

It will take 5 hours and 5 minutes to fill the tank

Step-by-step explanation:

Here, we want to get the time taken to fill the tap

Let us have the rate per hour

A fills in 6 hours; so the fraction filled in an hour is 1/6

B fills in 8 hours, so the fraction filled in an hour is 1/8

C empties in 10 hours, so the fraction removed per hour is 1/10

So factoring the supply and removal, where removal is on a negative basis

we have it that in an hour, the fraction retained is;

1/6 + 1/8 - 1/10

= (20 + 15 - 12)/120

= 23/120

So this is the fraction retained per hour

The number of hours it will take to have a whole is simply the reciprocal of this fraction

That would simply be 120/23 = 5 5/23

5 hours and 5 minutes

6 0

2 years ago

Identify the following data set: ... a survey from Gwinnett County Public Schools, required that all of the teachers fill out th

kozerog [31]

The following data set is A population ⇒ answer A

Step-by-step explanation:

Lets revise the definition of each choice

1. A population, is a discrete group of people, animals or things that

can be identified by at least one common characteristic for the

purposes of data collection

2. A sample is just a part of a population

3. The parameter is a fixed measure which describes the target population

Parameter is a fixed and unknown numerical value

4. A statistic is a characteristic of a small part of the population

The statistic is a variable and known number which depend on the

sample of the population

∵ All of the teachers in Gwinnett County Public Schools fill out the

survey

∴ The data set is population

The following data set is A population

Learn more:

You can learn more about statistic in brainly.com/question/13540962

#LearnwithBrainly

3 0

2 years ago

Which graph represents the function f(x)=2x/x^2-1

velikii [3]

See attachment for your answer:

4 0

3 years ago

Read 2 more answers

If y=x^2 and x=(-8) then y =...

lutik1710 [3]

Answer:

-64

Step-by-step explanation:

y=x^2

and the x represents -8

Your answer will be -64

By saying that x=(-8) all you have to do is plug in the negative 8 to the original equation of y=x^2. This would make it y=(-8)^2

When you plug in negative 8 to the second power into the calculator your answer will be -64

I hope this helps king!

7 0

3 years ago

14(5-1/5×25)+2÷4×1 How Do I Evaluate This Expression ?

True [87]

Use the distributive property and multiply everything in the parentheses by 14.
Leaving you with.. (70 - 3.5 x 350) + 2 / 4 x 1.
Then reduce the parentheses.
Leaving you with.. ( -1155) + 2 / 4 x 1
Then divide 2 by four.
Leaving you with.. (-1155) + .5
Answer.. -1,154.5

7 0

3 years ago