The mean age of 5 people in a room is 39 years. A person enters the room. The mean age is now 36. What is the age of the person who entered the room?

Answers

Answer 1

Answer:

21

Step-by-step explanation:

Mean is the average of the objects

With five people, the mean is the average age of these people so what did you divide 5 into to get 39.

5 × 39 = 195

After a person enter the room, total 6 in the room with a mean of 36.

6 × 36 = 216

Now the age of the person who entered the room  216 - 195 = 21


Related Questions

an angle measuring between 90 and 180 is called__

Answers

Answer:

A) obtuse angles

Step-by-step explanation:

Options:

A.obtuse

B.acute

C.straight

D.small

Correcr Answer A) obtuse

(Hope this helps can I pls have brainlist (crown)☺️)

the weight of an object on the moon is 0.167 of its weight on earth how much wuold a 180 pound astrounaut weigh on the moon

Answers

Answer:

About 30.06 pounds

Step-by-step explanation:

In order to solve this, you would need to multiply the total weight on earth (180 Ibs) by the force of gravity on the moon (0.167).

for a brainlist please answer

Answers

Answer:

The variable should not be Less than or equal to... it should be GREATER than or equal to [[tex]y\geq 2x-4[/tex]]

Step-by-step explanation:

Answer:

I believe her mistake is that the shaded area is on the wrong side of the line.

Step-by-step explanation:

7200(3)2t+2 write an equivalent function of the form W(t)=ab^t

Answers

im sorry i dont understand what u r asking but here is what i think u are asking?

43200t+2?

please help and show your work please

Answers

Answer:

[tex]m=-8[/tex]

Step-by-step explanation:

[tex]2m+6=-10\\2m=-16\\m=-8[/tex]

Invisible Steps:

Subtract 6 on each side:

[tex]2m+6-6=2m[/tex]

[tex]-10-6=-16[/tex]

Divide by 2 on each side:

[tex]2m[/tex] ÷ [tex]2=m[/tex]

[tex]-16[/tex] ÷ [tex]2=-8[/tex]

the answer is : m = -8

A magnifying glass shows the image of an object that is 10 times the objects actual size. Determine the length of the image of the object if the actual length of the object is 8 millimeters

Answers

The correct answer is 80 millimeters

help please i dont get it

Answers

Answer:

Well apparently you don't know your Alphabet

Step-by-step explanation:

So it is

A.B.C.D.E.F.G.H.I.J.K.

The correct order is ABCH.

What is Order of Letters?

Arrangement according to the normal order of the letters in the alphabet.

Given that a puzzle

The correct order of alphabets to reach the key is ABCH.

Hence, the answer is ABCH.

For more references on Order of Letters, click;

https://brainly.com/question/1480667

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please help!!!!!!!!!!

Answers

Answer:

120 / (x+y) = 8

Step-by-step explanation:

120 / (x+y)

= 120 / (3+12)

= 120/15

= 8

Elena collects 112 specimens of beetle and records their lengths for an ecology research project. When she returns to the laboratory, Elena finds that she incorrectly recorded one of lengths of the beetles as 122 centimeters (about 4 feet). What should she do with the outlier, 122 centimeters, when she analyzes her data?

please help me, this isn't a (a) (b) (c) (d) option I need a full explanation
40 POINTS!!!

Answers

Answer:

The correct option is;

C. She should go back and remeasure all of her specimens again to find the error. If she can't do this, she should eliminate the outlier from the analysis, because this is an error in recording

Step-by-step explanation:

In order to minimize error in measurement, some valuable steps includes;

1) Perform a double check on all measurements to ensure that the measurements recorded are accurate

2) Ensure proper training before taking measurements

3) Measurements should only be taken under controlled conditions

4) Separate the entire population into smaller groups for proper recording

5) Have a second observer double check the records

Elena should remove the outlier of 122 centimeters (about 4 feet) from her dataset during data analysis due to its significant deviation from the typical lengths of beetles.

When analyzing her data, Elena should consider removing the outlier of 122 centimeters (about 4 feet) from her dataset. The Outlier is defined as a "data-point" which significantly deviates from the overall-pattern of the data.

In this case, the recorded length of 122 centimeters is likely an error or anomaly, as it is much larger than the typical lengths of beetles. Removing the outlier will help ensure that her analysis and conclusions accurately reflect the majority of the data and the actual behavior of the beetles.

Learn more about Outliners here

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Which is equivalent to the expression below 6a-7+2a-4

Answers

8a-11
have a nice day

help me with this question please!!ASAP

Answers

25 is the answer I got for it

Help will give Brainlest only true answers only please dont guess

Answers

Answer: 75%

Step-by-step explanation:

35% of 5 liters is 1.75 liters

1.75 liters + 8 liters = 9.75 liters (only juice)

(5 liters + 8 liters = 13 liters) (the whole thing)

So, 9.75/13 is 75%

x^3 - 3x^2 + 4x - 12

Answers

Answer:

(x^2 + 4)(x - 3).

Step-by-step explanation:

I'm guessing you want to factor this.

You can do it by grouping:

x^3 - 3x^2 + 4x - 12

= x^2(x - 3) + 4(x - 3)

= (x^2 + 4)(x - 3).

YES I AM GIVING A BRAINLIST:D

Answers

Answer:

IM fINNA GUESS B

Step-by-step explanation:

The sports boosters club is having a bake sale to buy uniforms. They want to raise $250. They need to rent a booth for $20. How many dozen cookies will they need to sell if they charge $3 per dozen?

Which equation could be used to solve this problem?

A: 250 = 3 c - 20
B: 250 = 20 - 3 c
C: 250 = 3 - 20 c
D: 250 = 20 c - 3

Answers

Answer:  A: 250 = 3c - 20

Step-by-step explanation:

A: 250 = 3c - 20

To reach their final stash of $250, they need to sell c cookies at $3 each, less the $20 for the booth.

Please can someone help with rearranging formulae? Will mark brainliest!

Answers

Answer:

look at the picture ..........

Write the equation of the line that passes through the points (-8,3) and (0,2). Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.

Answers

Answer:

[tex]y = \frac{1}{8} x + 2[/tex]

The triangle below is equilateral. Find the length of side xx in simplest radical form with a rational denominator.

Answers

Answer:

x= 12 cm

Step-by-step explanation:

Answer:

[tex]x=(4\sqrt{3})/3[/tex]

Step-by-step explanation:

If we know that it is equilateral, we know that all angles are 60 degrees, which makes the top smaller triangle a 30-60-90 triangle. Applying the 30-60-90 triangle theorem, we get x=4/sqrt3. By rationalizing the denominator, we get [tex]x=(4\sqrt{3})/3[/tex]

what is the unit rate if there are 80 miles driven using 4 gallons of gas

A. 21 miles per gallon B. 20 miles per gallon

C. 22 miles per gallon D. 19 miles per gallon

Answers

B. 20 miles per gallon
The answer B because if you use one gallon it’s 20miles then two gallons is 40 miles and so on

PLS HELP ASAP ILL GIVE BRAINLKEST

Answers

Answer:

4th option

Step-by-step explanation:

What is the solution to the system of equations?
V
스를
2
X +3
X = -2
ㅇ(-2,-1)
ㅇ(2)
0
11
0
아2를

Answers

Step-by-step explanation:

x = -2

is a given.

now use this also in the first equation :

y = 2/3 × -2 + 3 = -4/3 + 9/3 = 5/3

so, [-2, 5/3] is correct

Which is the best estimate?

Answers

7.5 bbbbbbbbbbbbbbbbbb

How to improve your class multiplication skills.

Answers

Answer:

PRACTICE.....ONCE THERE WAS A TIME WHEN I'D USED TO FAIL IN MATHS.....BUT NOW I ALWAYS GET 90+ IN MATHS!!!!!

(08.02 MC)

A pair of equations is shown below:

y = 2x − 1
y = 4x − 5

Part A: In your own words, explain how you can solve the pair of equations graphically. Write the slope and y-intercept for each equation that you will plot on the graph to solve the equations. (6 points)

Part B: What is the solution to the pair of equations? (4 points)

Answers

Answer:

part A

y = 2x -1

the slope is 2/1 means it will be up 2 right 1 or down 2 left 1 the slope is positive

the y-int is -1

y = 4x -5

the slope is 4/1 means it will be up 4 right 1 or down 4 left 1 the slope is positive

the y-int is -5

part B  

the solution to this is (2,3)

Step-by-step explanation:

Answer:

Part A:

y = 2x - 1

Slope = 2/1

Y intercept = -1

y = 4x -5

Slope = 4/1

Y intercept = -5

Part B:

x = 2    y = 3

Step-by-step explanation:

Part A: To solve the pair of equations graphically, we need to plot the 2 lines on a graph, and look at where they intercept. Then we draw a vertical line from the intersection to the x axis and we know what x is equal to. Laslty, we draw another line (horizontal) from the intersetcion to the y axis and we know what y is equal to.

Equation of a line: y = mx + c

where mx is the slope and c is the y intercept

y = 2x - 1

Slope = 2/1 -- 2 divided by 1 because it goes 2 squares up and 1 to the right

y intercept = -1

y = 4x - 5

Slope = 4/1

y intercept = -5

Part B:

Solving for x:

Since we know that y = 2x - 1 but also 4x - 5, then:

2x - 1 = 4x - 5

2x + 4 = 4x

4 = 2x

x = 2

Solving for y:

Since we know that x = 2, we just have to replace it in one of the two equations, let's say y = 2x - 1. This would give us:

y = 2 x 2 - 1

y = 4 - 1

y = 3

Calculate the standard deviations of the plant weights in each group. Is the equal population standard deviation met

Answers

Answer: How would i know what im calculating?

Step-by-step explanation:

Use cross multiplication to figure this out. (What does xy = )
.78x/7 = 19/4y

Answers

Answer:

xy = 42.6282051282...

Step-by-step explanation:

0.78x/7 = 19/4y

0.78x * 4y = 3.12xy

19 * 7 = 133

3.12xy = 133

3.12xy/3.12 = 133/3.12

xy = 42.6282051282...

Two lines are
perpendicular if the
of their
А
and
Lline are also perpendicular.

Answers

If a line is perpendicular to one of the

two given parallel lines then it is also perpendicular to the other line.

As we know that by the theorem of perpendicular transversal theorem that in the plane, if a transverse is perpendicular to one or two parallel lines, then it is perpendicular to the third line. ... Since, they do not touch or interact with each other they are said to be parallel to each other.

Thnx for marking me as brainlist

I NEED HELP THIS HW IS DUE TODAY​

Answers

2(a) 6a-2b+5
2(b) 6x+3y+3z

3. x-2

(Could you tell me the question of the first part pls)

HELP PLEASE ASAP WILL GIVE BRAINLIEST

Farmer Hopt started with some alabers on her farm. She had 90 alabers after 5 months. After 16 months, she had 167 alabers. Assume a constant rate of change.

Write an equation in slope-intercept form for total alabers, y, after x months.

Answers

Answer:

[tex]y= 11x+35[/tex]

Step-by-step explanation:

Let's find the slope first. It took hopt 11 months (from 5 to 16) to grow 77 trees. It means that each month he grew [tex]\frac{77}{11} = 7[/tex] trees.

At this point you can use the point-slope form and re-write the equation or, let's think about it. It's a direct proportion. If at month 5 she has 90 trees, one month earlier she had 11 less. two month earlier, 22 less. 5 month earlier, or at x = 0 (ie, our intercept!) she had 55 less trees, or 90-55 = 35 trees

The equation is then [tex]y= 11x+35[/tex]

who knows what 59.95 multiplied by 44.95. And 13.95 multiplied by 15.95.

Answers

Answer:

→ 59.95 multiplied by 44.95 is 2694.7525

→ 13.95 multiplied by 15.95 is 222.5025

(I am not sure if this is correct but I hope you get this correct, but I wish you  good luck! with your homework.)

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