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koban [17]
3 years ago
11

Expand the function f(x)=(x+7)³

Mathematics
1 answer:
Lyrx [107]3 years ago
8 0

Answer:

Step-by-step explanation:

you can use the (a+b)² = a²+b²+2ab

(x+7)(x+7)²= (x+7)(x²+49+14x) = x³+49x+14x²+7x²+343+98x = x³+21x²+147x+343

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What is the weight of a ring tailed lemur that has a mass of 10 kg? Use w = mg (g = -9.8 m/s^2)
fiasKO [112]

Answer:

None of these

Step-by-step explanation:

Normally, we consider "weight" to be the force due to gravity that an object exerts in the downward direction. It has a positive value equal to the magnitude of "mg". In this instance, it would be ...

... |(10 kg)·(-9.8 N/kg)| = |-98 N| = 98 N

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However, you're specifically told to use ...

... w = mg

... w = (10 kg)(-9.8 m/s²) = -98 N

This selection is not among those offered.

8 0
3 years ago
A hair salon increased their prices by 10%. if a haircut was originally $20,what is the new price?
Dovator [93]

Answer:

22

Step-by-step explanation:

new price = original price + increase

new price = 20 + 20*10%

 Change to decimal form

                 = 20 +20*.10

                  = 20 +2

                   =22

4 0
3 years ago
The following are the ages (years) of 5 people in a room:
Savatey [412]
The answer will be 12
4 0
3 years ago
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Which value for x will make 3x + 10 > 75 correct?
Arturiano [62]

Answer:

The answer is D

Step-by-step explanation:

I subtracted 10 from 75 and got 65 then divided 65 by 3 and got 21

6 0
3 years ago
An art museum has 20 large cylindrical columns in its lobby. Each column has a height of 22 feet from
Firdavs [7]

A cylinder is a three-dimensional structure formed by two parallel circular bases connected by a curving surface. The amount of paint needed to paint 20 pillars is 9.874 gallons.

<h3>What is a cylinder?</h3>

A cylinder is a three-dimensional structure formed by two parallel circular bases connected by a curving surface. The circular bases' centers overlap each other to form a right cylinder.

The curved surface area of a single-cylinder with a diameter of 2.5 feet and a height of 22 feet will be,

Curved surface area = πDh = π × 2.5 × 22 = 172.7875 ft²

The total area of 20 pillar = 20 × 172.7875 ft² = 3,455.75191 ft²

Since a gallon of paint can cover only 350 ft², therefore, the amount of paint that will be needed to paint 3,455.75191 ft² can be written as,

\text{Amount of paint needed} = \dfrac{3,455.75191\rm\ ft^2}{350\rm\ ft^2} = 9.874\rm\ gallons

Hence, the amount of paint needed to paint 20 pillars is 9.874 gallons.

Learn more about Cylinder:

brainly.com/question/12248187

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5 0
2 years ago
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