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3 years ago

Find the surface area and volume OF THIS QUESTION TOO (question 99)

Mathematics

1 answer:

Svetllana [295]3 years ago

7 0

Answer:

439.6 cm²

Step-by-step explanation:

Surface area of the cylinder is the length of the rectangular strip that goes around, and the are of the two circles

Area circle = πr²

Area circle = 3.14 * 7²

Area circle = 3.14 * 49

Area circle = 153.86

The area of both circles is 153.86 x 2 = 307.72

The rectangular strip is the diameter by the height

Diameter = 2πr

Diameter = 14*3.14 = 43.96

The strip is 43.96 x 3 = 131.88

Total surface area is 307.72 + 131.88 = 439.6

If my answer is incorrect, pls correct me!

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-Chetan K

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The percentage of adult height attained by girls who are x years old can be modeled by f(x)equals 62 plus 35 log (x minus 4 )w

nevsk [136]

Answer:

$98.45\%$

Step-by-step explanation:

The percentage of adult height attained by girls who are x years old can be modeled by: $f(x)= 62 +35 log (x -4 )$

Where x represents the girl's age (from 5 to 15); and

f(x) represents the percentage of her adult height.

If a girl's age, x=15

Then, from f(x), the percentage of her adult height:

$f(15)= 62 +35 log (15 -4 )\\=62+35log11\\=98.45\%$

The percentage of adult height attained by a girl who is 15 years old is approximately 98.45%.

8 0

3 years ago

Help me please <br> !!!!!!!!!!!!!!!

erik [133]

The distance between S and T :

|-2| + 14

= 2 + 14

= 16

Answer

16 units

6 0

3 years ago

Read 2 more answers

Simplify the following exponential expression. Show your work step by step and list the Properties of Exponents used to solve th

Troyanec [42]

$\frac{3x^0(2x^3t^2)^4}{(4x^7y^4)^2} = \frac{3(1)(2)^4(x^3)^4(t^2)^4}{(4)^2(x^7)^2(y^4)^2}$ Since, $a^0 = 1$ and $(ab)^m=a^mb^m$

$\frac{3x^0(2x^3t^2)^4}{(4x^7y^4)^2} = \frac{3(16)x^{12}t^{8}}{16x^{14}y^8}$ Since, $(a^b)^c=a^{bc}$

$\frac{3x^0(2x^3t^2)^4}{(4x^7y^4)^2} = \frac{3t^{8}}{x^{14-12}y^8}$

$\frac{3x^0(2x^3t^2)^4}{(4x^7y^4)^2} = \frac{3t^{8}}{x^{2}y^8}$

Thus,

$\frac{3x^0(2x^3t^2)^4}{(4x^7y^4)^2} = \frac{3t^{8}}{x^{2}y^8}$

5 0

3 years ago

Read 2 more answers

Which choice best describes a substance’s state?

Juliette [100K]

Whether its a solid, liquid or gas

7 0

2 years ago

Solve question in photo. Mathematics help please

posledela

To sub, solve for 1 variable
solve for y

14-4x=2y
divide by 2
7-2x=y
sub 7-2x for y

(7-2x)+2x=7
7-2x+2x=7
7=7
true
answer is infinite olutions since everybody cancled out

5 0

3 years ago