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3 years ago

How many numbers between 111 and 100100100 (inclusive) are divisible by 444 or 999?

Mathematics

1 answer:

FrozenT [24]3 years ago

6 0

Answer:

100100100/999=100,200

100100100=225,450

325,650 would be your answer

Step-by-step explanation:

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What is the distance between the points (1, –6) and (–5, 2)? Round your answer to the nearest tenth. A. 10.0 units B. 9.0 units

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B .....................................................

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3 years ago

You have 100 people. 90 have French heritage, 80 have English heritage and 75 have Native American heritage, how many have herit

USPshnik [31]

My answer is 82. I added up 90 + 80 + 75 = 245. I then divided that by 3 because there are 3 different cultures. And the number was 81. something. So, I rounded and got 82. But I'm not sure if that's the right answer.

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4 years ago

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To study the output of a machine that fills boxes with cereal, a quality control engineer weighed 150 boxes of Brand X cereal. T

scoundrel [369]

Answer:

$\sigma = 0.07770$

Step-by-step explanation:

Given

The above table

Required

The standard deviation

First, calculate the class mid-point. This is the average of the class interval.

The mid-point x is:

$x_1 = \frac{1}{2}(15.3 + 15.6) =\frac{1}{2} * 30.9 = 15.45$

$x_2 = \frac{1}{2}(15.6 + 15.9) =\frac{1}{2} * 31.5 = 15.75$

$x_3 = \frac{1}{2}(15.9 + 16.2) =\frac{1}{2} * 32.1 = 16.05$

$x_4 = \frac{1}{2}(16.2 + 16.5) =\frac{1}{2} * 32.7 = 16.35$

$x_5 = \frac{1}{2}(16.5 + 16.8) =\frac{1}{2} * 33.3 = 16.65$

So, we have:

$\begin{array}{cccccc}x & {15.45} & {15.75} & {16.05} & {16.35} & {16.65} \ \\ f & {14} & {25} & {84} & {18} & {9} \ \end{array}$

Calculate mean

$\bar x = \frac{\sum fx}{\sum f}$

$\bar x = \frac{15.45 * 14 + 15.75 * 25 + 16.05 * 84 + 16.35 * 18 + 16.65 * 9}{14 + 25 + 84 + 18 + 9}$

$\bar x = \frac{2402.4}{150}$

$\bar x = 16.016$

The standard deviation is:

$\sigma = \sqrt{\frac{\sum(x_i - \bar x)^2}{\sum f}}$

$\sigma = \sqrt{\frac{(15.45 - 16.016)^2+ (15.75 - 16.016)^2+ (16.05 - 16.016)^2+ (16.35 - 16.016)^2+ (16.65 - 16.016)^2}{14 + 25 + 84 + 18 + 9}}$

$\sigma = \sqrt{\frac{0.90578}{150}}$

$\sigma = \sqrt{0.00603853333}$

$\sigma = 0.07770$

4 0

3 years ago

Hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

navik [9.2K]

Answer:

I see, you have to hhh.

Step-by-step explanation:

6 0

3 years ago

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Solve this problem please

nika2105 [10]

Hi, Ptaverez1! :)

First we must length of an individual square; This can be achieved by using the formula for the area of a square:
$l^2$
$l=Length$

Lets input the information we already know:
$l^2=42.25$
Take square root.
$l=\sqrt42.25$
$l=6.5$

The length of an individual square tile is 6.5 ft.

Since they're are 9 tiles and the porch in a square, I can conclude that the measurements for the porch are 3 tiles by 3 tiles (as 3*3=9; using the formula for the area of a square.)

Since the length of the porch is 3 tiles, we must multiply the individual tiles piece length by 3:
$3*6.5$
$=19.5$

The formula for the perimeter of a square is:
$l*4$
$l=length$

Lets input the information we know:
$19.5*4$
$=78$

The perimeter of the porch is 78 feet²

Hope this helps.
-Benjamin

8 0

3 years ago