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3 years ago

11

The monthly utility bills in a city are normally distributed with a mean of $100 and a standard deviation of $12. Find the proba

bility that a randomly selected utility bill is more than $120

1 answer:

Korolek [52]3 years ago

4 0

40% just because that the answer

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a thermometer measures temperature to the nearest 0.5 degrees celsius which measurement shows an appropriate level of precision

Alja [10]

The temperature which has best degree of precision would actually be the temperature reading which has similar decimal place with the error. So the best answer would have 1 decimal and from the choices given above, this would be:

16.0°C

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3 years ago

Simplify the expression: 2/3 (6e+9f-21g)

Natasha_Volkova [10]

Answer:

4e + 6f - 14g

Step-by-step explanation:

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3 years ago

How many of the first million positive integers share no common factors greater than 1 with 2020

Bingel [31]

9514 1404 393

Answer:

396,040

Step-by-step explanation:

Factors of 2020 are 2, 5, 101.

There are 1,000,000 / 1010 = 990 multiples of 2 and 5 and 101.

There are 1,000,000 / 505 -990 = 990 multiples of 5 and 101 only.

There are 1,000,000 / 202 -990 = 3,960 multiples of 2 and 101 only.

There are 1,000,000 / 10 - 990 = 99,010 multiples of 2 and 5 only.

There are 1,000,000 / 101 -990 -990 -3960 = 3,960 multiples of 101 only.

There are 1,000,000 / 5 -990 -990 -99,010 = 99,010 multiples of 5 only.

There are 1,000,000 / 2 -990 -3960 -99,010 = 396,040 multiples of 2 only.

So, the total number of multiples of any factor of 2020 is ...

990 +990 +3960 +99,010 +3960 +99010 +396040 = 603960

Then the number of integers in the first million that do not share any common factors greater than 1 with 2020 is ...

1,000,000 -603,960 = 396,040

4 0

3 years ago

Consider the function f(x)=10^x and function g(x)=f(x+4). How will the graph of function g differ from the graph of function f?

Jobisdone [24]

Answer:

Shifts 4 units to left

Step-by-step explanation:

Given:

$\displaystyle \large{f(x)=10^x}\\\\\displaystyle \large{g(x)=f(x+4)=10^{x+4}}$

Accorded to transformation rules:

f(x + a) is shift to left <u>a</u> units.
f(x - a) is shift to right <u>a</u> units.
f(x) + a is shift up <u>a</u> units.
f(x) - a is shift down <u>a</u> units.

Since function g is f(x + 4) then function g is the graph of function f(x) that shifts to left 4 units.

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2 years ago

Miss McGrew is making stools for her first graders to use during story time. To make the stools, she covers wooden cubes with ca

castortr0y [4]

The answer is 9600

unlike the other guy who wanted points heres you help :)

5 0

3 years ago