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3 years ago

Round each number to the nearest...

Mathematics

2 answers:

IgorLugansk [536]3 years ago

8 0

Answer:

tenth: 29.526 = 29.5

hundredth: 71.284 = 71.28

whole number: 648.722 = 649

Step-by-step explanation:

When you are rounding to the given place they give you, you always look at the next digit on the right side of it and see if it's 5 or greater (5, 6, 7, 8, 9, 10) then you would round the decimal place up 1 and leave the rest of the digits after it 0, though if it was below 5(4, 3, 2, 1, 0) then you would round the number as it is and leave the rest of the digits after it 0 as well.

crimeas [40]3 years ago

5 0

To round a number to the nearest position, we must consider the number after that position. If it is greater than 5, we must round up and vice versa

1. 29.526 --> 29.5

2. 71.284 --> 71.28

3. 648.722 --> 648

Hope that helps!

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Kevin and Randy Muise have a jar containing 68 coins, all of which are either quarters or nickels. The total value of the coins

Bad White [126]

9514 1404 393

Answer:

23 quarters
45 nickels

Step-by-step explanation:

Let q represent the number of quarters. Then the number of nickels is 68-q, and the number of cents in the jar is ...

25q +5(68 -q) = 800

20q +340 = 800 . . . . simplify

20q = 460 . . . . . . . . subtract 340

q = 23 . . . . . . . . . . . divide by 20; this is the number of quarters

68-q = 45 . . . . . . . find the number of nickels

The jar contains 23 quarters and 45 nickels.

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Answer:

Increase:

It will have increase when y>x

so, percentage of increase is

$=\frac{y-x}{x}\times 100$

Decrease:

It will have decrease when x>y

so, percentage of decrease is

$=\frac{x-y}{x}\times 100$

Step-by-step explanation:

Let's assume initial value as x

assume final value as y

Increase:

It will have increase when y>x

so, percentage of increase is

$=\frac{y-x}{x}\times 100$

For example:

Initial value is 40

So, x=40

Final value is 50

so, y=50

now, we can find percentage in increase

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Decrease:

It will have decrease when x>y

so, percentage of decrease is

$=\frac{x-y}{x}\times 100$

For example:

Initial value is 50

So, x=50

Final value is 40

so, y=40

now, we can find percentage in decrease

$=\frac{50-40}{40}\times 100$

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Answer:

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Step-by-step explanation:

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Have a good day :)

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