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3 years ago

Does anyone know the answer to this???????

Mathematics

1 answer:

azamat3 years ago

3 0

Answer:

1.666666666... for the number and mixed number would be 1 and 2/3

Step-by-step explanation:

Considering it wouldn't equal out to a whole number you'd use the mix number.

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0.489 in two other from

liberstina [14]

One form is 489/1000

5 0

3 years ago

Find the sum of 2 x2 + 3 x - 4, 8 - 3 x , and -5 x2 + 2.

trapecia [35]

I'm just guessing but try -7

3 0

3 years ago

Rms/d/e/1FAIpQLSÜDABFGIUJs31xO8JDRug2175ehNYt_F-yaPG7RkyQmW5_puw/viewform?hr_submission=Chki-

geniusboy [140]

Answer:

12709 balls

Step-by-step explanation:

Given

Dimension of Room = 15 ft by 20 ft by 10 ft

Diameter of Ball = 9.2 inches

Required

Determine the number of balls that can be occupied by the room

First, we need to calculate the volume of the room

This is done by multiplying the dimensions of the room

$Volume = 15ft * 20ft * 10ft$

$Volume = 3000ft^3$

Next, we calculate the volume of the ball.

The ball is a sphere.

So:

$Volume = \frac{4}{3}\pi r^3$

Where

$r = \frac{1}{2} * Diameter$

$r = \frac{1}{2} * 9.2$

$r = 4.6\ in$

So:

$Volume = \frac{4}{3}\ * \frac{22}{7} * (4.6in)^3$

$Volume = 407.88419\ in^3$

To calculate the number of balls, we then divide the volume of the room by volume of a ball

$Balls = \frac{3000\ ft^3}{407.88419\ in^3}$

Convert ft^3 to in^3

$Balls = \frac{3000 * 1728in^3}{407.88419\ in^3}$

$Balls = \frac{3000 * 1728}{407.88419}$

$Balls = \frac{5184000}{407.88419}$

$Balls = 12709.4899167$

$Balls = 12709$ <em>-- approximated</em>

<em>Hence, the room will contain 12709 balls</em>

5 0

3 years ago

If n(A-B)=18,n(AuB)=70 and n(AnB)=25 then find n(B)

svp [43]

n(A-B) denotes elements which are in A but not in B

n(Au B) denotes elements in A and B

n(AnB) denotes elements that are common in A and B

Now I will add one more set

n(B-A) which denotes elements in B but not in A

So, n(AuB) = n(A-B) + n( B-A) +n(AnB)

70 = 18 +n(B-A) + 25

70 = 43 + n(B-A)

n(B-A) = 70-43

n(B-A) = 27

So, n(B) = n( B-A) + n( AnB)

= 27+25

= 52

4 0

3 years ago

A defunct website listed the "average" annual income for Florida as $35,031. What is the role of the term average in statisti

ahrayia [7]

Answer:

For this case the average is an statistic unbiased for the population parameter $\mu$

And the average is calculated with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

Where n represent the sample size

N represent the population size, and X the observations for this case the annual income.

This statistic is an unbiased estimator of the population mean since $E(\bar X) = \mu$

After calculate the average they got:

$\bar X= 35031$

And we can use the term "sample mean" instead of the average, and is a measure of central tendency for the data

Step-by-step explanation:

For this case the average is an statistic unbiased for the population parameter $\mu$

And the average is calculated with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

Where n represent the sample size

N represent the population size, and X the observations for this case the annual income.

This statistic is an unbiased estimator of the population mean since $E(\bar X) = \mu$

After calculate the average they got:

$\bar X= 35031$

And we can use the term "sample mean" instead of the average, and is a measure of central tendency for the data

6 0

4 years ago