3 years ago

Please Help!!!! Please!!!!!!

Mathematics

1 answer:

RoseWind [281]3 years ago

6 0

The answer it's C. I already did all the multiplications for you

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The perimeter of a rectangular deck is 4 times its width. If the deck's perimeter is 30 feet, what is the deck's area?

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i think it is 120

Step-by-step explanation:

4 multiplied by 30 is 120

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-6z+(-5.5)+3.5z+5y-2.5 simplyfied?

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Answer:

$\boxed{\sf -2.5z+5y-8}$

Step-by-step explanation:

$\sf -6z+(-5.5)+3.5z+5y-2.5$

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3 years ago

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What is the surface area of a cylinder whose radius is 3 inches and whose height is 10 inches? Round to the nearest tenth.

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3 years ago

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A right pyramid with a square base has a base edge length of 12 meters and slant height of 6 meters. The apothem is meters. The

Kisachek [45]

Answer:

Apothem: 6m

hypotenuse : slant height : 6√2 m

height :6m

volume: 288m2

Step-by-step explanation:

Hi, the correct values are: (image attached down below)

Base length= 12m

Slant height is actually = 6√2

So, to calculate the apothem (AC)we apply the Pythagorean theorem:

AB^2 = AC^2 + BC^2

√AB^2 -BC^2 = AC

AC = √(6√2)^2 - 6^2

AC =6 meters

Hypotenuse of ABC = AB =6√2 meters

Height = AC = 6 meters

Volume:

Volume of a pyramid = 1/3 x base area x height

area of a square = side length ^2 = 12^2

V= 1/3 x 12^2 x 6 =288 m2

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3 years ago