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lutik1710 [3]
3 years ago
6

Find the surface area of the sphere.

Mathematics
1 answer:
Mila [183]3 years ago
6 0

A = 201.1\:\text{cm}^2

Step-by-step explanation:

Given: r = 4 cm

The surface area A of a sphere is given by

A = 4\pi r^2 = 4\pi(4\:\text{cm})^2

\:\:\:\:\:= 201.1\:\text{cm}^2

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The cost of a book was decreased from 60 to 50 by what percent the price decrased with solution​
Artist 52 [7]

Answer:

The price decreased by 16 1/3%, or approximately 16.3%

Step-by-step explanation:

Use the formula for percent change. If the answer is negative, it is a percent decrease. if the answer is positive, it is a percent increase.

percent change = (new price - old price)/(old price) * 100%

In this case, use:

new price = 50

old price = 60

percent change = (new price - old price)/(old price) * 100%

percent change = (50 - 60)/60 * 100%

percent change = -10/60 * 100%

percent change = -1/6 * 100%

percent change = -100/6% = -50/3% = -16 1/3%

The price decreased by 16 1/3%, or approximately 16.3%

7 0
3 years ago
The function g is defined by g(x)= 3x2 - 3.<br> Find g(3z).
vagabundo [1.1K]
=3(3z)2-3
=3(9z2)-3
=27z^2-3
=3(9z^2-1)
=3(3z+1)(3z-1)
5 0
3 years ago
Find the least common multiple of these two expressions. 15x^7y^3u^8 and 6y^4u^5
snow_tiger [21]

Answer:

30x^7y^4u^8

Step-by-step explanation:

We have been given two expressions 15x^7y^3u^8 and

6y^4u^5

Now we need to find out least common multiple of these two expressions.

First we need to find out what is common factor of both expressions. 15x^7y^3u^8 and

6y^4u^5

Least common multiple means find the expression which can be divided by both expressions.

15 and 6 both goes into 30

so 30 is part of LCM (least common multiple )

Now pickup the highest exponent of each variable.

So we get x^7y^4u^8

Hence required least common multiple is 30x^7y^4u^8

8 0
3 years ago
Which graph represents the function?<br><br> f(x)=2x√+1
gogolik [260]

Answer:

the 3rd one

Step-by-step explanation:

I just think

4 0
2 years ago
Pls answer ASAP<br> 5 extra points
Leona [35]

Answer:

The answer is B.

Step-by-step explanation:

Any percentage is a number divided by 100 . So 0.4%=0.4100 . Dividing 0.4 by 100 gives 0.004 .

5 0
3 years ago
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