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2 years ago

Helpppppppppppppppppppppppppp

Mathematics

1 answer:

Dahasolnce [82]2 years ago

3 0

Step-by-step explanation:

$2\pi {r}^{2} + 2\pi rh$

$2(3.14) {(20)}^{2} + 2(3.14)(20)(11)$

$6.28(400) + 6.28(220) \\ 2512 + 1381.6 = 3893.6 {mi}^{2}$

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Simplify the expression so there is only one positive power for each base.

katen-ka-za [31]

Answer:

Option (A)

Step-by-step explanation:

The given expression is,

$(5^{-2}\times 4^{-4})^{-2}$

Since $x^{-1}=\frac{1}{x}$ and $\frac{1}{x^{-1}}=x$

$5^{2}=\frac{1}{5^{-2}}$

$4^{2}=\frac{1}{4^{-2}}$

Therefore, $(5^{-2}\times 4^{-4})^{-2}=\frac{1}{(5^{-2}\times 4^{-4})^{2}}$

$=\frac{1}{(5^{-2})^2\times (4^{-4})^2}$

$=\frac{1}{5^{-4}\times 4^{-8}}$

$=\frac{1}{5^{-4}}\times \frac{1}{4^{-8}}$

$=5^{4}\times 4^{8}$

Option (A) will be the answer.

8 0

3 years ago

What is 27/4 as a mixed number?

Helga [31]

$\frac{27}{4}=\frac{24+3}{4}=\frac{24}{4}+\frac{3}{4}=6+\frac{3}{4}=6\frac{3}{4}$

5 0

3 years ago

Read 2 more answers

One angle of a triangle measures 24 more than the smallest angle in the triangle. The third angle measures twice the measure of

never [62]

Answer:

smallest angle measure 39 degrees

Step-by-step explanation:

the sum of the three interior angles in a triangle is always 180°

x= smallest

x +x+24 + 2x = 180

4x +24 = 180

4x = 156

x = 39

7 0

3 years ago

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The television weekly "60 Minutes" runs a segment on the role of local politicians in the drug trade. The issue soon becomes the

Lerok [7]

Answer:

A gatekeeper

Step-by-step explanation:

"60 Minutes" is acting as a gatekeeper.

Gatekeeping is a theory in mass communication that involves selecting, and then filtering items of media that can be consumed within the time or space that is allocated to an individual. This means gatekeeping falls into a role of surveillance and monitoring data. Information is filtered for dissemination, for the purpose of publication, broadcasting, the Internet, or some other mode of communication.

8 0

3 years ago

What is the percent of change from 4,000 to 600?<br> work too plz

xenn [34]

$\frac { n }{ 100 } \cdot 4,000=600\\ \\ 4,000\cdot n=60,000\\ \\ Therefore:\\ \\ n=\frac { 60,000 }{ 4,000 }$

$\\ \\ =\frac { 60\cdot 1,000 }{ 4\cdot 1,000 } \\ \\ =\frac { 60 }{ 4 } \\ \\ =15$

As 15% of 4,000 is 600, the percentage change was -85%.

4 0

3 years ago