1. John's weight at his last five doctors' appointments has been 180 lbs, 170 lbs, 168 lbs, 184 lbs, and 182 lbs. What must John's
welght be at his next doctor's appointment to have a mean weight of 175 lbs?

Answers

Answer 1

Answer:

166

Step-by-step explanation:

1050-884=166

6x175=1050

Answer 2

Answer:

[tex] \boxed{166\: lbs \: [pounds \: of \: weight]} [/tex]

Step-by-step explanation:

Mean =

Sum of data / # of data

Mean =

(180 lbs + 170 lbs + 168 lbs + 184 lbs + 182 lbs) / (5)

Since the weight of the next doctors appointment is unknown and must equal a mean weight of 175, there will be one more data point and we will let x represent this unknown weight:

175 lbs = (180 lbs + 170 lbs + 168 lbs + 184 lbs + 182 lbs + x lbs) / (5 + 1) →

175 lbs = (884 lbs + x lbs) / (6) →

(884 lbs + x lbs) / (6) = 175 lbs →

(884 lbs + x lbs) / (6) × 6 = 175 lbs × 6 →

884 lbs + x lbs = 1050 lbs →

(884 + x) lbs = (1050) lbs →

(884 + x = 1050) lbs →

(884 + x – 884 = 1050 – 884) lbs →

(x = 1050 – 884) lbs →

x = 166 lbs

_____________________________

166 lbs must be the weight for the mean of these weights to be 175 because:

(180 lbs + 170 lbs + 168 lbs + 184 lbs + 182 lbs + x lbs) / (5 + 1) →

(180 lbs + 170 lbs + 168 lbs + 184 lbs + 182 lbs + 166 lbs) / (5 + 1) →

(1050 lbs) / 6 →

175 lbs


Related Questions

Which equation is equivalent to 2^3r = 10?

Answers

Answer:

r= 2

Step-by-step explanation:

2^3 is basically 2x2x2

2x2=4 x 2= 8

you can subtract 10 with 8 to fin what r equals to.

36 miles per gallon to miles per quart.

Answers

Answer:

144

Step-by-step explanation:

Answer:

9 miles per quart

Step-by-step explanation:

there are 4 quarts in a gallon so you can divide 36 by 4 to get miles per quart

Help please need answer ASAP

Answers

Answer:

60

Step-by-step explanation:

45 is a vertical angle so the angle opposite will also be 45 degrees. There is also 75 in the bottom left corner of the trianlge. 45 + 75 is 120. In a triangle the angles all equal 180 degrees. subtract 120 from 180. 180-120=60.

Hope this helps :D

can someone help me!??

Answers

Answer:

A: Negative

B: 1) Decreases

   2) Increases toward 100

C: The point (1,55) and (5,97) are outliers.

Step-by-step explanation:

Because the grade decreases as the number of abscenses increases, it is called a negative association.

Outliers are the point that stick far out from the rest of the points.  Both (1,55) and (5,97) are far away from the rest of the points.  And don't follow the general trend of the graph.

by selling an item at $20.70, a trader makes a profit of 15%. at what price should he sell the item so as to make a profit of 35%

Answers

Answer:

24.3 i think

Step-by-step explanation:

x * 1.15=20.7

20.7/1.15=18

18 * 1.35=24.3

$24.30

If something is sold at a profit of 15%, we write that percentage as 0.15. When we’ve added that to the whole amount we got the percentage from, we wrote that as 1.15 (115%)

If x is the cost of the item
1.15x = 20.70
Divide both sides by 1.15
x = 18

If the item originally cost 18, and we want a 35% profit, that’s 135% of the cost, or 1.35 as a decimal
18 x 1.35 = $24.30

Eight friends want to play enough games of chess to be sure everyone plays everyone else. How many games will they have to play?

Answers

Everyone will have to play 21 games

The number of games, the friends have to play is an illustration of combination.

They have to play 28 games to ensure that they all play

Given

[tex]n = 8[/tex] --- number of friends

[tex]r = 2[/tex] --- only two friends can play at a time

For everyone else to play, we will make use of the following combination formula;

[tex]^nC_r = \frac{n!}{(n - r)!r!}[/tex]

So, we have:

[tex]^8C_2 = \frac{8!}{(8 - 2)!2!}[/tex]

[tex]^8C_2 = \frac{8!}{6!2!}[/tex]

Expand

[tex]^8C_2 = \frac{8 \times 7 \times 6!}{6! \times 2 \times 1}[/tex]

[tex]^8C_2 = \frac{8 \times 7}{2 \times 1}[/tex]

[tex]^8C_2 = 4 \times 7[/tex]

[tex]^8C_2 = 28[/tex]

Hence, the 8 friends have to play 28 games to ensure that everyone else plays

Read more about combinations at:

https://brainly.com/question/8018593

Please I need help to solve those problems:
A) (+4) + (-7) multiply (-3)-(+5)

Answers

Answer:

The answer is -24, I think!

(+4)+(-7)

4-7

-3

(-3)-(+5)

-3-5

-8

Hope this helps.

Please answer quickly with explanation. I am in need of major help.


Suppose you work at a local radio station. You are in charge of a $180 budget for
new tapes and CDs. Record companies will give you 21 promotional (free) CDs. You
can then buy tapes for $8 and CDs for $12.
a. Write a linear inequality that models this situation.
Answer
b. Graph the inequality. Make sure to use proper scales and to label your axes

Answers

Answer:

0---22.5   and    21---36

Step-by-step explanation:

you will always have 21 free CDs so you can put a closed circle on 21 then you can have a max of 15 CDs (180/12) soo put another closed circle on 36

now time for tapes, which is easier, the minimum is 0 and the max is 22.5. Now put closed circles on each and you're done. Except that .5 might get you in trouble, use your own discretion on rather to leave it on the .5 or round. I don't know what your teacher is looking for so I will let you decide.


“Find the trig function and simplify if you can”

Answers

Answer:

[tex]\sqrt{10}[/tex]/10

Step-by-step explanation:

cos is adjacent side/hypotenuse

you need to find the hypotenuse

Let h = length of hypotenuse

[tex]6^{2} + 18^{2} = h^{2}[/tex]

[tex]h^{2}[/tex] = 36 + 324 = 360

h = [tex]\sqrt{360}[/tex] = 6[tex]\sqrt{10}[/tex]

cos (theta) = 6/6[tex]\sqrt{10}[/tex] = 1/[tex]\sqrt{10}[/tex] = [tex]\sqrt{10}[/tex]/10

Which scatterplot shows the correct division for using the Area Method to draw the trend line?

Answers

Answer:c

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

The surface area of a cylinder with height 2 in. is given by the function f(x) = 2πx2 + 4πx, where x is the radius. If g(x) = 4πx gives the surface area of the side of the cylinder, which combined function gives the total surface area of the two circular bases?

A. f + g
B. g − f
C. f − g
D. f · g

Answers

Answer:

C f - g

Step-by-step explanation:

the surface area of a cylinder consists of the two circles (1 at the top, 1 at the bottom) and the surrounding "mantle", the side of the cylinder, that connects the two circles.

there are no other parts.

so, when the function for the whole surface area is

SA(x) = f(x) = 2×pi×x² + 4×pi×x

and the side/ mantle area by itself is

g(x) = 4×pi×x

then when ignoring the side/mantle area part in f(x) the only thing left of the main function f(x) is the surface area of the two circular bases.

therefore, the solution for the function of the surface area of only the two circular bases must be the main function minus the function for the side/mantle area.

=> f - g

Are the two triangles below similar? (5 points)
Q
N
25°
9
50
5
1050
50-
3
0
R
M
O No, because the corresponding sides are not proportional

Answers

Answer:

gtggghg

Step-by-step explanation:

PLEASE HELP!!! VERY EASY MATH EXPLINATION NEEDED!!!

Answers

Answer:

It’s D, 18 cuts

Step-by-step explanation:

She cut a 6 yard long ribbon into 1/3 yard pieces so you would have to divide to get the answer and the steps to dividing is

Stay the same, change the sign, flip it
so the 6 would stay the same, you would change the division sign to multiplication because division is the opposite of multiplication, and you would flip the 1/3 into 3/1 so

6 x 3/1 would be 18/1 which is just 18

Answer:

18

Step-by-step explanation:

So lets go voer what we know:

There are 6 pieces of ribbon.

Each piece of ribbon is 1 yard long.

We need 1/3 of each ribbon(1/3 yard).

To find this, lets take our 6 pieces of ribbbon, and break them into 3 seperate pieces.

This is because we need ribbons that are 1/3 of a yard. 3 ribbons would make up a single yard.

So:

The 6 yards of ribbon x 3 ribbons that make up 1 yard

6*3

=

18

I hope this makes more sense, and helps you understand better. I can try to explain in a different way if this still doesn't make sense.

I hope this helps! :)

The manager of a store orders sets of bunk beds that cost $25 and sells them for $59. What
is the mark-up percentage?

Answers

Answer:

The mark-up percentage is 136%

Step-by-step explanation:

59 - 25 = 34

34/25 = 1.36

Hiii dont mind the answer that i put but im not sure if im right, can someone please help me?

Answers

Answer:

Option 4

Step-by-step explanation:

The volume of a cylinder is going to be the area of the base (which is a circle) times the height. if you have cylindrical mug, then you can use the base area×height relationship, but it won't be exact because some of the volume is going to be used for the walls of the mug itself.

Anyways:

Volume = Base Area × Height

•Base Area -> Circle = π×radius²

•Height is given as 7in.

Volume = π×(6.2in)² × 7in = 845.33975...

Volume is in units cubed (the 3rd power) which is where the in³ is from. Your closest option here looks to be the 4th choice.

3x + 4> 10 please show working ​

Answers

Answer:

Step-by-step explanation:

3x + 4 > 10

3x > 10 - 4

3x > 6

x > 6/3

x > 2

Angle A is circumscribed about circle O.
What is the measure of angle O?

[picture below]

Answers

Answer:

134°

Step-by-step explanation:

[tex] In\: \odot O,[/tex] AB and AC are tangents at points B and C respectively. OB and OC are radii.

[tex] \therefore OB\perp AB\: \&\: OC\perp AC[/tex]

(By tangent radius theorem)

[tex] \therefore m\angle ABO =m\angle ACO = 90\degree [/tex]

[tex] m\angle CAB+ m\angle ABO +m\angle ACO+ m\angle BOC = 360\degree [/tex]

[tex]\therefore 46\degree + 90\degree +90\degree+ m\angle BOC = 360\degree [/tex]

[tex]\therefore 226\degree + m\angle BOC = 360\degree [/tex]

[tex]\therefore m\angle BOC = 360\degree-226\degree [/tex]

[tex]\therefore m\angle BOC = 134\degree [/tex]

[tex]\implies m\angle O= 134\degree [/tex]

Serena bought 5 shirts for $6 each and spent $7 on lunch. She paid for the shirts and lunch using her debit card. The change in the balance of Serena's checking account can be represented by the expression shown. 5(-6) + (-7) Which integer represents the change in the balance of Serena's checking account from these purchases? -37 23 -18 4

Answers

Answer:

[tex]5(-6) + (-7) = -37\\[/tex]

Step-by-step explanation:

Given

[tex]5(-6) + (-7)[/tex]

Required

Solve

[tex]5(-6) + (-7)[/tex]

Open brackets

[tex]5(-6) + (-7) = 5*-6 -7[/tex]

[tex]5(-6) + (-7) = -30 -7[/tex]

[tex]5(-6) + (-7) = -37\\[/tex]

Which steps are needed to solve this equation?
.
b minus 21 = 177
Subtract 21 from the left side and add 21 to the right side of the equation.
The answer is b = 198.
Check the solution by substituting 198 for b.
Add 21 to the left side and subtract 21 from the right side of the equation.
The answer is b = 156.
Check the solution by substituting 198 for b.
Subtract 21 from both sides of the equation.
The answer is b = 156.
Check the solution by substituting 156 for b.
Add 21 to both sides of the equation.
The answer is b = 198.
Check the solution by substituting 198 for b.

Answers

Answer:

Subtract 21 from the left side and add 21 to the right side of the equation.

The answer is b = 198.

Check the solution by substituting 198 for b.

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

Find 100% of 188:
Find 50% of 188:
Find 25% of 188:
Il
Find 75% of 188: 14

Answers

Answer:

100% = 188

50% = 94

25% = 47

add 50% value and 25% value 141 or you can multiply 188 by .75

Step-by-step explanation:

hat is pretty simple first think 188 is the 100 percent

the 50 percentage is dividing by 2 the number or multiplying by 0.50 that is 50% so it's 94

to get 25 porcent you can't multiply by .25 or divide by 4

to get 75 porcent add the values of 50 and 25 percent or multiply 188 by .75

HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

3 might be right to your answer!

Find the zeros of the function.
Enter the solutions from least to greatest.
g(x) = 4x^2 – 484
lesser x =
greater x =

Answers

Answer:

11 and -11

Step-by-step explanation:

9 yd
9 yd
9 yd
9 yd
7.8 yd

Answers

Answer: the surface area should be 51175.8 with rounding

Step-by-step explanation:

Select ALL the correct answers.
Which of the following situations are fair?

Jason plays a game in which he has to pick a ball from a box of 10 balls, which contains 7 black balls and 3 white balls. He wins the game if he draws a white ball in one attempt.
To decide which citizens will be asked to participate in a county-wide poll, each citizen is assigned a number and the county uses a random number generator to determine the citizens who will be contacted.

Ray is playing a game in which he rolls a six-sided number cube. If the outcome is six, he is paid $5. Otherwise, he loses $1.
Jack and Mia both want the last cookie and neither will agree to share by splitting it. They ask a stranger passing by to flip a coin to decide who gets the cookie.

Ryan designs a game where a prize wheel is split into five equal sections. Four sections are red and one is green. If the wheel is spun and lands on a red section, the players loses $1. If the wheel lands on green section, the player wins $5.

Jericho designs a game for a school carnival. The game consists of a box of 50 colored balls; 35 are violet, 10 are orange, and 5 are yellow. The player has to choose one ball from the box. The player wins $5 if it is a yellow ball, otherwise, the player wins nothing.

Answers

The following are the situations that are fair; Ryan designs a game.. , To decide which citizens ..., Jack and Mia.

What is a system of inequalities?

When mathematical expressions are compared, with non-strict equality, then such mathematical statements are called mathematical inequalities.

The following are the situations that are fair;

Ryan designs a game where a prize wheel is split into five equal sections. Four sections are red and one is green. If the wheel is spun and lands on a red section, the player loses $1. If the wheel lands on green section, the player wins $5.

To decide which citizens will be asked to participate in a county-wide poll, each citizen is assigned a number and the county uses a random number generator to determine the citizens who will be contacted.

Jack and Mia both want the last cookie and neither will agree to share by splitting it. They ask a stranger passing by to flip a coin to decide who gets the cookie.

Learn more about solutions to the system of inequalities here:

https://brainly.com/question/16339562

#SPJ2

Which equation is equivalent to x^-5/3?

Answers

Answer:

caben 2 yo pienso. es que no se muy bien

What do the arrows heads indicate?

Answers

An arrowhead or point is the usually sharpened and hardened tip of an arrow, which contributes a majority of the projectile mass and is responsible for impacting and penetrating a target, as well as to fulfill some special purposes such as signaling.

Answer:

These pictures that you draw with arrows and arrowheads are representations of abstract mathematical objects. A ray is a subset of a line that has a starting point and extends indefinitely in one direction (not the other). The arrowhead is meant to indicate that it goes on and on.May 9, 2015

Why do vectors have arrowheads at the "endpoint

according to

...https://math.stackexchange.com › questions › why-do-vec...

-11 2/3 x (-4 1/5) =
A. 44
B. 44 2/15
C. -49
D. -44 2/15

Answers

Answer: c

Step-by-step explanation:

14 + -7 -3=????????????????????help

Answers

Answer:

-10

Step-by-step explanation:

hope its correct and helped:)

It’s 4
That’s the answer

hello please help i’ll give brainliest

Answers

inventor

inventions led to great feats of engineering ..like great canal

Translations
Acellus
Find the image of the given point
under the given translation.
P(8, -3) T(x, y) = (x - 4, y + 7)
P' = ([?], []).
Enter the number that belongs in
the green box
WILL MARK BRAINLIEST PLEASE HELP

Answers

Answer:

the answer to your question is 4 and 4

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He has great secrets with the draper. I am curious to hear some details. [Approaches to the front.]Evarist. [Approaching Nina.] Nina!Nina. Your wishes, sir?Evarist. A favour. I know Signorina Candida loves you.Nina. Yes, she has pity on the poor orphan. But alas! I am subjected to my brother, who embitters my life.Evarist. Listen to me.Nina. [Spinning on.] Spinning does not make me deaf.Evarist. [To himself.] Her brother is full of whims, but neither does she seem free of them.Candida. Business with the shopwoman; business with Nina. I do not understand. [Comes forward yet more.]Evarist. May I ask you a favour?Nina. Have I not already answered you? Have I not told you to command? I am not deaf. If my spindle disturbs you, I will throw it aside. [Does so.]Evarist. But how impetuous!Candida. What does her anger signify?Nina. I am at your orders.Evarist. You know that Signorina Candida broke her fan?Nina. Why, certainly.Evarist. I have bought a new one at the shop.Nina. 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