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Inessa05 [86]
3 years ago
10

What does 12 ÷3/4 equal? ​

Mathematics
1 answer:
djyliett [7]3 years ago
5 0

Answer:

16.

Hope this helps, have a great day/night!

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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
Find f^-1(x) and it’s domain.
Mrac [35]

Answer: A

Step-by-step explanation:

Letting f(y)=x,

x=\sqrt{y}-5\\\\x+5=\sqrt{y}\\\\y=(x+5)^{2}

Also, the domain of an inverse is the same as the range of the original function, so the range is x \geq 0

7 0
1 year ago
Marco drove 75 miles in hours. How many miles can he drive in 1 hour?
Nutka1998 [239]

Answer:

75

Step-by-step explanation:

75m/hr

3 0
3 years ago
Please help me please, I will give you the brain thing and extra points please help me. 3/5
kodGreya [7K]
Its the last option because anything between 0 to 1 would he smaller than the original
5 0
3 years ago
Read 2 more answers
Kevin has had a checking account for a month. As he reconciles his account, Kevin notices that the dates on his check register d
Romashka-Z-Leto [24]
I believe the answer is D. It takes time for a check to be processed.
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2 years ago
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