The mean age of 15 students in a class is 6 years. If the age of
their teacher is included, mean becomes 9 years. Which is the age of
the teacher?

Answers

Answer 1

Answer:

might be wrong but 54

Step-by-step explanation:

15 × 6 = 90

90 + 54 = 144

144 ÷ 16 = 9

hope this helps


Related Questions

Write the equation of a line that passes
through (-3,-8) and (3, 10).

Answers

Answer:

y=3x+1

Step-by-step explanation:

The equation will most likely be in slope-intercept form which is

y=mx+b

(m) is the slope,

(b) is the y intercept

First we must find the slope. The formula for slope is (y1-y2)/(x1-x2)

Which means we take the (y) of the second given point and subtract the (y) if the first given point, then divide that by the (x) of the second given point minus the (x) of the first given point.

(10-(-8)/3-(-3)

18/6

Simplify

3/1

3, our slope is 3.

Now we can put this into our formula

y=3x+b

To find the y intercept we just apply one of the given points. (I'll use (3, 10) but either of them would work.

10=3(3)+b

Now solve

10=9+b

Subtract 9 from each side

1=b

Now we put our slope and y intercept into our formula

y=3x+1.

Hope this helps! If you have any questions on how I got my answer feel free to ask. Stay safe!

What is the measure of angle x

Answers

Answer:

X=67

Step-by-step explanation:

The angles of a  triangle  adds to 180

So x is 180-46-67=67

Answer:

21

Step-by-step explanation:

∠AHI + 67° = 180° (corresponding angles are equal)

∠AHI = 180° - 67°

∠AHI = 113°

x + ∠AHI + 46° = 180° (angle sum property of a triangle)

x + 113° + 46° = 180°

x + 159° = 180°

x = 180° - 159°

x = 21°

hope it helps you!

NEED THE ANSWER IN 23 MIN Paul wanted to know about how much time students in his school spent studying. From a list of student names, he chose a name at random from the list, and then every sixth student after that continuing through the list until he came back to the name he started with. Was Paul’s survey a random survey, and if so, which sampling method did he use? A. Yes, Paul used simple random sampling. B. Yes, Paul used systematic random sampling. C. Yes, Paul used stratified random sampling. D. No, Paul’s survey was not a random sample.

Answers

Answer:C

Step-by-step explanation:

Answer:

It is C. Yes, Paul used stratified random sampling.

Step-by-step explanation:

PLEASE HELP I REALLY NEED IT WHAT IS 10% OF 75

Answers

7.5 is the answer shshsj is jana

Anyone wanna see me play Slime Rancher?

Answers

whats that game about

use the graph and table to write the equation that describes the line graph ​

Answers

Answer:

y = x + 3   or  y = 1x + 3

Step-by-step explanation:

Since we're just going to find the equation (assuming it's slope-intercept form, which is y = mx + b), our jobs will be relatively simple!

Let's start with the first step and identify the y-intercept, which is the easiest step.  

That will be (0,3), as the line intercepts the y-axis there.

Next, let's find the slope of the line using [tex]\frac{rise}{run}[/tex] or [tex]\frac{y_{2}-{y}_{1}}{x_{2}-{x}_{1}}[/tex]. Just be careful when using [tex]\frac{rise}{run}[/tex] that you correctly identify the scale the axis' are using.

For now, I'll use  [tex]\frac{y_{2}-{y}_{1}}{x_{2}-{x}_{1}}[/tex].  Let's pick two points... (0,3) and (1,4).

—> [tex]\frac{4-3}{1-0}[/tex] = [tex]\frac{1}{1}[/tex]

This will be our slope, 1.

We now have our answer, y = 1x + 3.

Hope that helped!

Answer:

y = x + 3

Step-by-step explanation:

passed on edgeuinity

In 96.28 which digit is in the tenths place?​

Answers

Answer:

2

Step-by-step explanation:

96.28

9 is in the tens place

6 is in the ones place

2 is in the tenths place

8 is in the hundredths place

Hope this helps you :)

Answer:

The 2 in 96.28 is in the tenths place

Step-by-step explanation:

;-;

a car is moving with a velocity of 20 metre per second calculate the distance covered by the car in 10 seconds​

Answers

Answer:

the answer is 200 because 20 time 5 is 100 the add it itself

Step-by-step explanation:

Answer:

200 meters per second

Step-by-step explanation:

multipy the mps put the number of seconds

Devin evaluated the expression 114 – 38. Which is one way he can check his work?

Answers

He could add the solution to 38 and see if the total equals 114

Andre wants to buy an iPod. He got $50 for his birthday, but the iPod he wants costs $230, so he’s going to have to save up the rest. His plan is to save $30 a month, after his birthday, until he has the money he needs. Let x be the time in months and y be the amount of money saved.

How much money does Andre have after 1 month?

$
30

What is the coordinate point used to represent this?

(
30
,
50
)

What is the slope in this situation?

$

Using the point from the information above, write the equation of this scenario in point-slope form. Do NOT include spaces in your answer.


How long will it take him to save up all the money he needs to buy the iPod ($230)?

It will take Andre
months to save the $230 he needs to buy the iPod.

Answers

Answer:I believe he will have 20$ left

Step-by-step explanation:

How many sides does a regular polygon have if one exterior angle is 10?
120
180
360​

Answers

I believe the answer to your question is going to be 360.

Answer:

360.

Step-by-step explanation:

m
—-<-1 or -2+m>3
6
please explain when you do the work

Answers

Answer: -2 +m≥3

Step-by-step explanation:  

PLS HELP ASAP NOW which expression is equivalent to 8-(6r +2)

a)-6r +6
b)2r+2
c)6r+10
d)-6r+10

Answers

Answer: its A have a good day

Please helppp! 6th math


What % of 440 is 286?

Answers

Answer:

65

Step-by-step explanation:

Hope it helps!!!

Answer:

286 is 65 %  of  440

Step-by-step explanation:

line up your numbers with your procentage and cross multiply:

440 represents 100%

286 represents ? %

? *440=286 *100 divide both sides by 440

?= 286*100/440=65

Please help me!!

Determine whether the sequence of mapping rules will lead to the image being congruent to the pre-image (x, y) -> (x - 2, y)

No or yes if yes then is it a translation or reflection, if no then will it be small or with the size of the pre image be changed?

Answers

The answer is u want to divide them multiply

Question 1
5/6
Minus
1/4

Answers

Answer:

1 7/12

Step-by-step explanation:

here you go :)

If the zeros of a polynomial function are 3 and -4, using the Factor Theorem how would we express the factors of the function? *

Answers

Step-by-step explanation:

Zeros of a polynomial function are 3 and -4.

So, factors are, x-3 and x+4

Be my best frienddd Ill make BrainLess!
Which of the following organic compounds is the main source of energy for living things?

a.

carbohydrates

c.

nucleic acids

b.

lipids

d.

proteins

Answers

Answer:

A

Step-by-step explanation:

HOPE THIS HELPS :)

You invest $2000 in an account that pays simple interest of 7% for 30 years

Answers

Answer:

Your interest at the end of those 6 years is $4200

Step-by-step explanation:

find the area and perimeter

Answers

Answer:

AREA=100

Step-by-step explanation:

Answer:

A=1200 P=25

Step-by-step explanation:

For area you do 5x4x6x10 for Perimeter you do 4+5+6+10

A parking garage at the airport charges $20.00 for the first day. Each additional day after the first day costs $8.00 more. So parking for 2 days costs $28.00,
parking for 3 days costs $36.00, parking for 4 days costs $44.00, etc. How much will it cost to park a car in the garage for 21 days?

Answers

Answer:

Step-by-step explanation:

20+8x=cost

20+8(21)=cost

188 is your cost after 21 days

After 21 days the cost will be $ 188

two-thirds of a number added to six is at least twenty-two

Answers

If you are asking me to write it in a equation form here it is: 6 +( 2/ 3 x )≥ 22

Susan’s science class is performing an experiment that involves dropping objects from various heights, starting close to the ground and working upward to 8 feet. The function , where x represents the distance from the ground, represents the time it takes for the object Susan drops to hit the ground. The graph represents the function





Identify some of the key features of the graph. That is, determine if the function is monotonically increasing or decreasing, state the end behavior, find the x- and y-intercepts, find the endpoint, and state the domain and the range of the graph (without considering the context).

Answers

Answer:

1) The function is monotonically increasing

2) The end behavior of the function is x tends to infinity as t(x) tends infinity

3) The x and y -intercept is (0, 0)

4) The endpoint is (0, 0)

5) The domain is 0 ≤ x ≤ +∞

The range is 0 ≤ t(x) ≤ +∞

Step-by-step explanation:

1) The given function of the time for the object to hit the ground is t(x) = 1/4·√x

Where;

x = The distance from the ground

t = The time it takes for the object to hit the ground

Monotonically increasing function, we have;

A function that is continuous on [a, b] and it can be differentiated in the domain, (a, b) is monotonically increasing when df(x)/dx > 0 for all values of x in (a, b)

However, where df(x)/dx < 0 for all values of x in (a, b), the function is decreasing

Therefore, using an online tool, we have;

dt(x)/dx = d(1/4·√x)/dx = 1/8 × 1/√x

Therefore, the dt(x)/dx > 0, for 0 < x < +∞ and the function is monotonically increasing

2) The end behavior of the function as x tends to infinity, t(x) = 1/4·√x approaches infinity

3) From the end behavior, and the nature, of the function t(x) = 1/4·√x, where both variables are directly proportional, we have that the x and y -intercept =  (0, 0)

4) The endpoint is (0, 0) given that as t(x) tends to 0, x tends to 0

5) The domain is 0 ≤ x ≤ +∞

The range is 0 ≤ t(x) ≤ +∞.

Answer:

The function is monotonically increasing since the output values are continually getting larger. This also tells us that the end behavior of the function is infinity.

The x-intercept is (0,0), the y-intercept is (0,0), and the endpoint too is (0,0).

The domain of the graph is all values greater than or equal to 0, and the range is all positive output values.

Step-by-step explanation:

What's the value of sec 60 degrees

Answers

Answer:

2

Step-by-step explanation:

[tex] \sec \: 60 \degree = 2[/tex]

HELP ON THIS. (serious answers only) 10 points. Will mark you Brainliest if answered right.

Answers

The radius of the circle is 9 in so the circumference would be approximately 56.55 in and the area would be approximately 254.47 in


Which amounts of materials satisfy the relationship?

2 cubic yards of compost, 8 cubic yards of topsoil
4 cubic yards of compost, 5 cubic yards of topsoil
1 cubic yard of compost, 12 cubic yards of topsoil
3 cubic yards of compost, 12 cubic yards of topsoil

Answers

Answer:3

Step-by-step explanation:doing the quiz rn

Answer: 1 cubic yard of compost, 12 cubic yards of topsoil

Step-by-step explanation: Got it wrong for the answer and this one was right

Henry bought 4 pies, which he plans to share with a group of his friends. If there is exactly enough to give each member of the group 1/6 of the pie. How many people are in the group?

Answers

Answer:

If it's 1/6 of every pie to one person then 6 people but if it's 1/6 of all 4 pies then 24 people.

Step-by-step explanation:

Sry didn't quite understand the question

Hope it helps :)

Have a good day/night

Brainliest pls?

What are these answers please help

Answers

Answer: if it is a positive number then it will always be a positive integer

Step-by-step explanation:

The points (-5,r) and (1,4) lie on a line with slope 3. Find the missing coordinate r.​

Answers

Answer:

the missing coordinate of "r" equals -14. (-5,-14)

Please Answer! - Image attached

Write the inequality shown by the graph below.

Answers

Answer:

18

Step-by-step explanation:

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