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3 years ago

Twenty percent of a number is equal to 6 less than one half of the same number. What is the number?

Mathematics

1 answer:

Aliun [14]3 years ago

7 0

The number is 20. Work in picture if you want it or want justification of steps:)

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svp [43]

The answer is A. 21.6 just add, 9.2+0.5+6+5.9=21.6

I hope this helps!

5 0

3 years ago

Read 2 more answers

What single decimal multiplier would you use to increase by 4% followed by a 3% increase

Mandarinka [93]

Answer:

1.0712

Step-by-step explanation:

if you increase by 4%, it means you will have a new total of 104%. In decimals it is 1.04 (divide your percentage by 100) after that you do the same with the 3% increase. you'll have a new total of 103%. In decimals 1.03. If you want to know what single multiplier you can use, you need to multiply the both decimals. So you get 1.04 x 1.03 = 1.0712

hope this will help you, have a nice day!

7 0

3 years ago

Tim walks at a pace of 80 meters per minute. His school is 4 km away. If school begins at 8:00, what time does Tim need to leave

Naya [18.7K]

Answer:

7:10

Step-by-step explanation:

did the math

5 0

2 years ago

Read 2 more answers

One more math help needed question #5

crimeas [40]

75% becuase it is more than 5o% by the looks of it

4 0

3 years ago

An electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricit

TiliK225 [7]

Answer:

atleast 385

Step-by-step explanation:

Given that an electrical power company is looking to expand into a new market. Before they commit to supplying the new area with electricity, they would like know the mean daily power usage for homes there.

Population std deviation = $\sigma = 50$

Sample size = $n$

STd error of sample mean = $\frac{50}{\sqrt{n} }$

Margin of error for 95% would be Critical value ( std error)

Here since population std dev is known we can use Z critical value= 1.96

$1.96*\frac{50}{\sqrt{n} }19.6^2\\n>384.16$

Sample size should be atleast 385

5 0

3 years ago