44 is the same as 113 more than w

Choose the word or phrase that completes each sentence.

zaharov [31]

Answer:

Step-by-step explanation:

marginal cost is the money that is paid for producing one more unit of a good. marginal revenue is the money earned from selling one more unit of a good

3 0

4 years ago

Help me plz it’s due today

Serggg [28]

Answer:

A

Step-by-step explanation: Your salary will be greater than or equal to $46,000.

3 0

3 years ago

Read 2 more answers

The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied y

ioda

Answer:

$\bar X = \frac{\sum x_i f_i}{n} = \frac{1220750}{500}=2441.5$

$s^2= \frac{3408029125 -\frac{(1220750)^2}{500}}{500-1} =856849.7$

$s= \sqrt{856849.7}=925.662$

Step-by-step explanation:

For this case we can create the following table

Interval Frequency (f) Midpoint(xi) xi *f xi^2* f

0-499 9 249.5 2245.5 560252.3

500-999 13 749.5 9743.5 7302753

1000-1499 33 1249.5 41233.5 51521258.25

1500-1999 115 1749.5 201193.5 361986278.8

2000-2499 125 2249.5 281187.5 632531281.3

2500-2999 81 2749.5 222709.5 612339770.3

3000-3499 47 3249.5 152726.5 496284761.8

3500-3999 45 3749.5 168727.5 632643761.3

4000-4499 22 4249.5 93489 397281505.5

4500-4999 10 4749.5 47495 225577502.5

Total 500 1220750 3408029125

$\sum f_i = 500 , \sum x_i f_i = 1220750, \sum x^2_i f_i = 3408029125$

For this case we can calculate the sample mean with this formula:

$\bar X = \frac{\sum x_i f_i}{n} = \frac{1220750}{500}=2441.5$

And for the sample variance we can use the following formula:

$s^2= \frac{\sum x^2_i f_i - \frac{(\sum x_i f_i)^2}{n}}{n-1}$

And if we replace we got:

$s^2= \frac{3408029125 -\frac{(1220750)^2}{500}}{500-1} =856849.7$

And the deviation is just the square root of the sample variance and for this case is:

$s= \sqrt{856849.7}=925.662$

4 0

3 years ago

A paddle wheel on a boat is 12 feet in diameter. The fins along the outer edge travel at

irina1246 [14]

Answer:

Explanation:

First, we must determine the circumference of the paddle wheel.

The formula for the circumference of a circle is:

c

=

2

π

r

Where

r

is the radius of the circle.

However, we know

d

=

2

r

where

d

is the diameter of the circle.

Therefore:

c

=

2

r

π

=

d

π

Substituting

12

ft

for

d

gives a circumference of:

c

=

12

π

ft

The time it takes to complete 1 revolution can be found using the formula:

t

=

d

s

Where:

t

is the time it takes: what we are solving for in this problem.

d

is the distance traveled: we calculated this as

12

π

ft

s

is the speed traveled: from the problem we know this is

7.2

ft

sec

Substituting and calculating

t

gives:

t

=

12

π

ft

7.2

ft

sec

t

=

12

π

ft

sec

7.2

ft

t

=

12

π

ft

sec

7.2

ft

t

=

12

π

sec

7.2

t

=

1

.

¯

6

π

sec

Two find how long it would take for 100 revolutions we can multiply this time by

100

×

1

.

¯

6

π

sec

⇒

166

.

¯

6

π

sec

If a number is required for the answer we can use 3.14 as an estimate for

π

giving:

166

.

¯

6

π

sec

⇒

166

.

¯

6

×

3.14

sec

⇒

523

sec

Step-by-step explanation:

6 0

3 years ago

Please answer for 10 points

Soloha48 [4]

Answer:

1. 4.7

2. 5,082

Step-by-step explanation:

1. To find the volume of a cone you use this formula $V=\pi r^{2} \frac{h}{3}$ . The diameter is 3 so to find the radius, divide it by 2 (3/2=1.5) and we know the height. Input the numbers into the formula and solve $V=\pi (1.5)^{2} \frac{4}{3}$ which is equal to $3\pi$ . To find HALF, divide that answer by 2. $3\pi /2= 4.71239$ , round to the nearest tenth, making the answer 4.7!

2. To find the volume of a rectangular prism you use $V=lwh$ . Input the numbers, $V=(30)(12)(16)$ to find the amount of water for the bigger tank (5,760). Now follow the same process to find the amount of water for the smaller tank $V=(12)(6)(9)$ which is 678. Now subtract the smaller tank amount (678) from the larger tank since you're taking the water from the bigger tank to fill the smaller one which equals 5,082.

4 0

3 years ago