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3 years ago

What is 71.09 rounded off to the nearest whole number

Mathematics

1 answer:

masha68 [24]3 years ago

5 0

It is 71 because 0 is less than 5, so it stays the same.

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Is the square root of 12 rational or irrational?

Andreyy89

<h3>Answer: Irrational</h3>

We cannot write sqrt(12) as a fraction of two whole numbers

Note how sqrt(12) = 3.464 and the decimal portion goes on forever without any known pattern (and it doesnt repeat either).

Compare this to something like sqrt(16) = 4 which can be written as a fraction 4/1, so sqrt(16) is rational

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3 years ago

If the base is 8 in. and the height is 7 in. What is the area?

kap26 [50]

Answer:

The formula of area is Pi×R×R

and then you add all sides and answer of your question is 30cm

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2 years ago

Read 2 more answers

Please help: If the area of a rectangular picture of a stamp is 81 times greater than the actual stamp's area, and the stamp has

ololo11 [35]

Answer:

12 inches.

Step-by-step explanation:

We know that the length of the stamp is 4/3 inches.

Let the width be x inches.

Then the area of the actual stamp is:

$\frac{4}{3}x\text{ inches}^2$

We know that the rectangular picture of the stamp is 81 times greater than the actual stamp’s area. Therefore, the area of the picture is 81 times the above. So:

$81(\frac{4}{3}x)\text{ inches}^2$

So, the area of the rectangular picture is the area of the actual stamp multiplied by a scale factor k.

When we use the scale factor to scale area, we need to square it. Hence, the area of the actual stamp times the scale factor squared is equal to the area of the rectangular picture. Therefore:

$\frac{4}{3}x(k^2)=81(\frac{4}{3}x)$

Let’s solve for the scale factor. Divide both sides by 4/3(x). Hence:

$k^2=81$

Take the square root of both sides:

$k=9$

So, the scale factor from the actual stamp to the picture is 9.

So, the actual stamp has a length of 4/3.

Then ThThe length of the stamp’s picture will be:

$\frac{4}{3}k$

Substitute 9 in for k to get:

$=\frac{4}{3}(9)=12$

So, the length of the stamp’s picture is 12 inches.

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2 years ago

How are prisms and pyramids alike and how are they different?

LenKa [72]

Answer:

Prisms have two congruent — or identical — bases, and pyramids only have one base. The shape of the base on pyramids and prisms can vary, depending on the shape of the overall three-dimensional object. A prism has two identical bases that are parallel, while a pyramid has one base.

Step-by-step explanation:

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1 year ago

Which of the following is equivalent to log408 rounded to three decimal places?

il63 [147K]

The answer is: $0.564$