Fred wants to determine the mean hourly wage of the working students at his
school. He asks thirty of his friends their hourly wages and calculates the sample
mean to be $8. Which of these statements MUST be true?
The sample was randomly selected.
Bias was present and the sample was not randomly selected.
The sample was representative of all students at the school
The mean hourly range of the working students at the school is $8.

Step-by-step explanation:

1. cos x sec x

Secant is the inverse of cosine.

= cos x (1 / cos x)

= 1

2. sin x csc x

Cosecant is the inverse of sine.

= sin x (1 / sin x)

= 1

Answer:

4

Step-by-step explanation:

Find the number in the whole number place  

3

and look one place to the right for the rounding digit on the right side of the decimal point  

9

Round up if this number is greater than or equal to  

5

and round down if it is less than  

5

Answer:

$441.60

Step-by-step explanation:

Invoice amount: $460

Term 4/10= 4% discount if paid early within the first 10 days of the invoice date

Amount due: $441.60

Discount amount: $18.40

Invoice amount: $460

Term: 1/15= 1% discount if paid early within the first 15 days of the invoice date

Amount due: $455.40

Discount amount: $4.60

Invoice amount: $460

Term: n/30= no discount if paid on or after the 30 days from the invoice date

Amount due: $460

Discount amount: $0

Answer:

Step-by-step explanation:

I'm not sure that my answer is correct but i got 45

Answer:

it would be x=11

Step-by-step explanation:

thus is 100% right

Answer: g(a) = 4(-2) - 3 = -8 - 3 = -11

Step-by-step explanation: your welcome. :)

Answer:

-11

Step-by-step explanation:

g(a) = 4a -3

g(-2)= 4(-2)-3

g(-2)= -8-3

g(-2)= -11

Answer:

85?

Step-by-step explanation:

1008/12 =85  (amount per year/ 12 months) unless it is more complicated than that

Answer:

2x+12=24

first you subtract 12 from both sides

2x+12=24

-12. -12

The 12-12 should cancel itself, the rest of the equation you bring down to get

2x=12 (because 24-12=12)

Now you have 2x=12.
you then divide 2x by both sides.

2x=12

/2x=/2x

The 2x/2x cancels itself out so you then solve for 12/2x.

For this you just divide 12/2 which is 6!

x= 6 is your final answer.
to check this equation you can plug your number back into x to see if it is true! 2(6)+12=24.
6 times 2 is 12 and 12+12 is 24 so your answer (6) is true!

hope this helps! :D

Answer:

[tex]X = 6[/tex]

Step-by-step explanation:

[tex]2x + 12 = 14[/tex]

     [tex]-12[/tex]  [tex]-12[/tex]

---------------------

      [tex]\frac{2x}{2} = \frac{12}{2}[/tex] = [tex]x = 6[/tex]

1. Set the equation up.

2. isolate the x from 2x then do the opposite of 12 to -12

3. subtract from 14

4. make proportion.

5. divide both sides.

6. [tex]Answer= x=6[/tex]

hope this helped :) have a great night.

Answer:

c = 51, 9

Step-by-step explanation:

hope this helps

have an awesome day -TJ

=========================================================

Explanation:

x = number of years since the year 2000

eg: x = 1 represents the year 2001

y = value of the car in dollars

The point (x,y) = (0,29600) is on the curve and it's the y intercept. This is when Hailey bought the car with a value of $29600.

Another point on this curve is (7,12000) to indicate seven years have passed and the car is now worth $12000.

------------------------------

Since the y intercept is 29600, this is the value of 'a' in the equation

y = a*b^x

Meaning we can update it to

y = 29600*b^x

Plug in the coordinates of the other point so we can solve for b

y = 29600*b^x

12000 = 29600*b^7

12000/29600 = b^7

b^7 = 12000/29600

b^7 = 0.405405

b = (0.405405)^(1/7)

b = 0.878991 approximately

------------------------------

We found that

So we go from

y = a*b^x

to

y = 29600*0.878991^x

To verify this, plugging x = 0 should lead to y = 29600

Also, plugging in x = 7 should lead to y = 12000 or very close to it.

------------------------------

The last step is to plug in x = 12 to find the car's value in 2012, i.e. x = 12 years after the year 2000.

So,

y = 29600*0.878991^x

y = 29600*0.878991^12

y = 6296.58182216087

y = 6297

The predicted car's value in 2007 is about $6297

Answer: Governor A gets $198,042.5 dollars. Governor B gets $99,672.5 Dollars

Hope this helps!!!

Step-by-step explanation:

mark me brainliest please

Answer:

3.5

Step-by-step explanation:

the original probability is 7/6 favoring odd

Answer:

x = 129.8 degrees,  y = 50.2 degrees,    x + y = 180

Step-by-step explanation:

Let's say you have 2 supplementary angles, x and y

So x + y = 180

if x is 79.8 degrees less than the measure of a supplementary angle, then x = y - 79.8

Putting this into our x + y = 180 equation, we get

(y - 79.8) + y = 180

2y - 79.8 = 180

2y = 180 + 79.8

2y = 259.8

y = 259.8/2 = 129.9 degrees.

so x = 129.9 - 79.6 = 50.3 degrees.

See if it worked. x = 129.9 degrees,  y = 50.3 degrees,    x + y = 180 so we found the correct two angles! :-)

Answer:

in total she made 330.03$

Step-by-step explanation:

in total she made 57 pants and she paid 5.79 for each so you multiply and get the total

Answer: graph 3

Step-by-step explanation:

Answer:

4 divided by 3 will be your answer

Answer:

4 divided by 3

Step-by-step explanation:

Given;

what is a division word problem that can be represented by 4/3

Solve;

/ = ÷ or divide

Thus, 4 divided by 3 or Four divided by three.

Division word problem:

The family equally shares 4 boxes of pizza among 3 people

~Learn with lenvy~

Answer:

m∠2 is 55°

Step-by-step explanation:

Let us revise some facts in geometry

We will use these facts to solve our question

∵ ∠1 is an angle of a triangle

∴ m∠1 + 40° + 85° = 180° ⇒ 1st fact

→ Add the like terms in the left side

∴ m∠1 + 125° = 180°

→ Subtract 125° from both sides

∴ m∠1 + 125° - 125° = 180° - 125°

∴ m∠1 = 55°

∵ ∠1 and ∠2 formed from the intersecting of two lines

∴ ∠1 and ∠2 are vertically opposite angles

∴ m∠1 = m∠2 ⇒ 2nd fact

∵ m∠1 = 55°

∴ m∠2 = 55°

Answer:

-4000000

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

It is because function can be many to one but it cannot be one to many.

Answer:

4.0 g/ml

Step-by-step explanation:

[tex] Volume_X [/tex] = water displaced by X

Water displaced by object X = Final fluid level - Original fluid level

Water displaced by object X = 90 ml - 65 ml = 25 ml

[tex] Volume_{X} = 25 ml [/tex]

Density of rock:

100 grams => 25 ml

x grams => 1 ml

Cross multiply

x*25 = 1*100

25x = 100

25x/25 = 100/25

x = 4

Density of object X = 4 g per 1 ml = 4.0 g/ml

Using an exponential function, it is found that:

It is modeled by:

[tex]y = ab^x[/tex]

In which:

In this problem:

Thus, the equation is: [tex]y = 5(3)^x[/tex]

16 hours later, the amount is:

[tex]y = 5(3)^{16} = 215233605[/tex]

After 16 hours, there would be 215,233,605 tribbles.

8 hours later, the amount is:

[tex]y = 5(3)^{8} = 32805[/tex]

After 8 hours, there would be 32,805 tribbles.

More can be learned about exponential functions at https://brainly.com/question/25537936

Answer:

Let the first number be f.

Let the second number be s.

f = s-12

f+s = 100

Substitute the f in the first equation for the second equation.

s-12+s = 100

2s-12 =100

2s = 112

s = 56

Therefore f = 56-12 = 44

The 2 numbers are 56 and 44.

Answer:

0. 5

Step-by-step explanation:

its lyk two × 1 equals to 2 divide by 4

Step-by-step explanation:

(2×1)÷4. multiply 2 by 1 according to BEDMAS Rule

2÷4. Divide 2 by 4

0.5.

Answer:

use this formula 2 pie r square

Answer: 2 [tex]\frac{3}{5}[/tex]

Step-by-step explanation:

8/3 ( 8 divided by 3)

2 [tex]\frac{3}{5}[/tex]

Answer: 2   3/5

Step-by-step explanation: sorry for answering late and have a wonderful day!!!!!

also my i didnt know i walked 8 miles in 3 hours lolz. im just playin XD

Answer:

4329deg/360deg=12 revolutions

Step-by-step explanation: