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alukav5142 [94]
3 years ago
15

WILL MAKR BRAINLIEST IF GOTTEN RIGHT

Mathematics
2 answers:
Naya [18.7K]3 years ago
8 0

Answer:

hmm give me more so I can answer it

skad [1K]3 years ago
5 0

Answer:

V_{weights} =1,243 \: cm^3

Step-by-step explanation:

Radius of weight r_1=\frac{20}{2}= 10 \:cm

Radius of hole r_2=\frac{2}{2}= 1 \:cm

Height of weight as well as hole (h) = 2 cm

Volume of weights = (Volume of one weight - volume of hole)

\therefore V_{weights} = 2 (\pi r_1^2 h - \pi r_2^2 h)

\therefore V_{weights} = 2 \pi (r_1^2 -  r_2^2 )h

\therefore V_{weights} = 2 (3.14)(10^2 -  1^2 )2

\therefore V_{weights} =12.56(100 -  1 )

\therefore V_{weights} = 12.56(99)

\therefore V_{weights} =1,243.44

\therefore V_{weights} \approx 1,243 \: cm^3

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Step-by-step explanation:

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which geometric series represents 0.4444... as a fraction? a) 1/4, 1/40, 1/400, 1/4,000 b) 1/40, 1/400, 1/4,000, 1/40,000 c) 4/1
xenn [34]

Answer: \frac{4}{10}+\frac{4}{100}+\frac{4}{1,000}+\frac{4}{10,000}


Step-by-step explanation:

The given geometric series are:

a)\frac{1}{4}+\frac{1}{40}+\frac{1}{400}+\frac{1}{4,000}

on simplifying in decimals, we get

0.25+0.025+0.0025+0.00025=0.27775\neq0.4444

b) \frac{1}{40}+\frac{1}{400}+\frac{1}{4,000}+\frac{1}{40,000}

on simplifying in decimals, we get

0.025+0.0025+0.00025+0.000025=0.027775\neq0.4444

c)\frac{4}{10}+\frac{4}{100}+\frac{4}{1,000}+\frac{4}{10,000}

on simplifying in decimals, we get

0.4+0.04+0.004+0.0004=0.4444

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d)\frac{1}{10}+\frac{1}{100}+\frac{1}{1,000}+\frac{1}{10,000}

on simplifying in decimals, we get

0.1+0.01+0.001+0.0001=0.1111\ \neq0.4444

7 0
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This is because you multiply the 2 powers (2 and 8) to get 16. When there is one power within a set of parenthesis and one power on the outside the parenthesis. Since there is a 10 to the 0 power (10^0) you add this power to 16 since it is multiplying integers with exponents. Thus getting 10^16 as an answer.

I hope this helps!
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