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3 years ago

Who know how to do surface area of cylinders? Really need help

Mathematics

1 answer:

DiKsa [7]3 years ago

8 0

Answer:

To find the surface area of a cylinder add the surface area of each end plus the surface area of the side. Each end is a circle so the surface area of each end is π * r2, where r is the radius of the end. There are two ends so their combinded surface area is 2 π * r2.

Step-by-step explanation:

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If a data value is 2 and the mean is 11, what is the associated<br> deviation?

Westkost [7]

Answer:

the mean = 9, and the mean deviation = 3.75

Hope this helps! :)

3 0

2 years ago

Define the value of the expression 3^2 x 3^{-5}

Tanya [424]

Answer:

Between 0 and 1

Step-by-step explanation:

The given expresion is

${3}^{2} \times {3}^{ - 5}$

Recall that:

${a}^{m} \times {a}^{n} = {a}^{m + n}$

We apply this property of exponents to get;

${3}^{2} \times {3}^{ - 5} = {3}^{2 + - 5} = {3}^{ - 3}$

We rewrite to obtain a positive index as:

${3}^{2} \times {3}^{ - 5} = \frac{1}{ {3}^{3} } = \frac{1}{27}$

Therefore the value of the expression is between 0 and 1.

8 0

2 years ago

Please help. Evaluate this.

Alekssandra [29.7K]

Answer:

Step-by-step explanation:

i dont even know thats hard

7 0

3 years ago

Two increased by the product of a number and 9 is greater than or equal to 25.

Marianna [84]

Answer:

x≥2.56

Step-by-step explanation:

first we can write the inequality

2+9x≥25

we can now solve this with algebra

9x≥23

x≥2.56

3 0

3 years ago

Heather wants to buy new carpet for her living room floor. The floor is in the shape of a rectangle. Its length is 19 feet and i

SCORPION-xisa [38]

Answer:

$2431

Step-by-step explanation:

wish u was Heather lol

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6 0

2 years ago