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3 years ago

Which number is rational? −49√ −27√ −3√ -12√

Mathematics

1 answer:

raketka [301]3 years ago

4 0

−49√

Step-by-step explanation:

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What is the scientific notation for 140000

vampirchik [111]

You move the decimal point forward until it reaches the one so it looks like this:

1.4 x 10⁵

the exponent, 5, just tells you how many spaces the decimal point moved.

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3 years ago

Slope and rate of changes describe the same value true or false

Anit [1.1K]

Answer:

True

Step-by-step explanation:

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3 years ago

a movie theater has 15 rows of State each rows have 24. if there where 28 empty seats during one show how many people where ther

ale4655 [162]

Answer:

332

Step-by-step explanation:

To find how many seats there were, multiply the number of rows with the number of seats in each row:

15 (24) = 360

From these total seats, there are 28 empty seats, meaning:

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3 years ago

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3 years ago

Read 2 more answers

The part of a cylindrical soup can that is covered by the label is 8.5 cm tall and has a diameter of 6.5 cm. What is the area of

julia-pushkina [17]

Answer:

$180.4~cm^2$

Step-by-step explanation:

<u>Surface Area</u>

The surface area of a cylinder of height h and radius r is given by:

$A=2\pi rh$

It only covers the lateral side of the cylinder. If both the top and the bottom sides are to be included, then:

$A=2\pi rh+2\pi r^2$

The label will cover only the lateral side of the soup can that has a height of h=8.5 cm and a diameter of 6.5 cm. We need to calculate the radius which is half of the diameter r=6.5 cm / 2 = 3.25 cm.

Now we calculate the side area of the can:

$A=2\pi (3.25)(8.5)$

$A=173.6~cm^2$

We need to add the 0.8 cm overlap to the total area already calculated. This overlap has 0.8 cm of width and 8.5 cm of height, so this overlap area is:

$A_o= 0.8*8.5=6.8~cm^2$

The total area of the label is:

$A=173.6~cm^2+6.8~cm^2=180.4~cm^2$

The area of the label is $\mathbf{180.4~cm^2}$

5 0

3 years ago