The average height of 3 boys was 156cm. When a girl joined them, the average height of the 4 children was 153cm. How tall was the girl?

Answers

Answer 1

Answer:

The girl was 144cm tall

Step-by-step explanation:

Total height of the three boys=3×156=468

Total height of the four children=4×153=612

Height of the girl=612-468=144cm

Answer 2

The average height of 3 boys was 156cm. Therefore, The girl was 144cm tall.

How to find the average rate of change of something?

Let the thing that is changing be y and the thing with which the rate is being compared is x, then we have the average rate of change of y as x changes as:

[tex]\text{Average rate} = \dfrac{y_2 - y_1}{x_2 - x_1}[/tex]

The average height of 3 boys was 156cm.

When a girl joined them, the average height of the 4 children was 153cm.

Total height of the three boys = 3 × 156 = 468

Total height of the four children = 4 × 153 = 612

Height of the girl  = 612 - 468 = 144cm

Hence, the girl was 144cm tall.

Learn more about average here:

https://brainly.com/question/12322912

#SPJ2


Related Questions

The table gives the prices of a few items sold at a school cafeteria.

Item Cost
Bagel $2.00
Juice $0.90
Sandwich $3.00
Cupcake $1.50

Match the prices with the sets of items purchased by students.
-
$12.50
$15.00
$10.00
$11.60
-
2 bagels and 4 cupcakes
5 juices and 4 bagels
4 bagels and 4 juices
4 sandwhiches and 2 cupcakes

Answers

Answer:

$10.00 - 2 bagels and 4 cupcakes

$11.60 - 4 juices and 4 bagels

$12.50 - 5 juices and 4 bagels

$15.00 - 4 sandwhiches and 2 cupcakes

Also, Why does everyone like bagels so much???????

The regular octagon shown is divided into 8 congruent triangles. Each triangle has an area of 21.7 square centimeters. The
Perimeter of the octagon is 48 centimeters.

Answers

I believe the formula to find the height would be h= 2a/b and if you use that formula and plug in the area (21.7) of each triangle as well as the base (6) then you would get a height of 7.2 cm. I hope this is correct! :)

The length of the octagon is 6cm, the area is given by 3h and the height is 7.23 cm.

What is a triangle?

A triangle is a closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices.

In a triangle, the sum of all three angles is 180°

Triangle is a very common figure to deal with our daily life for example in our daily life to measure the height of any tower then there is a huge application of the right angle triangle.

Given the octagon with a perimeter of 48 cm

Let's say the length of each side is a

Perimeter = 8a

8a = 48

a = 6cm

Now,

The area of the triangle is given by

A = 1/2  × Base × Height

A = 1/2  × 6 × h

A = 3h

Now

A = 3h and the area is 21.7 cm²

So,

h = 21.7/3 = 7.23 cm

Hence "The length of the octagon is 6cm, the area is given by 3h and the height is 7.23 cm".

For more information about triangles,

https://brainly.com/question/2773823

#SPJ2

Given question is missing an image of the octagon is given below;

Please answer correctly !!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!

Answers

Answer:

[tex]2 \sqrt{15} [/tex]

Xander spends most of his time with his 10 closest friends. He has known 4 of his 10 friends since kindergarten. If he is going to see a movie tonight with 3 of his 10 closest friends, what is the probability that the first 2 of the friends to show up to the movie are friends he has known since kindergarten but the third is not?




1/30


9/125


12/125


1/10

Answers

Answer:

The answer correct answer is 1/30

Step-by-step explanation:

Answer:

1/30

Step-by-step explanation:

Find the 93rd term of the arithmetic sequence -5, -15, -25, ...−5,−15,−25,...

Answers

Answer:

The nth term will be:

[tex]a_{93}=-925[/tex]

Step-by-step explanation:

Given the sequence

-5, -15, -25, ...

An arithmetic sequence has a constant difference 'd' and is defined by  

[tex]a_n=a_1+\left(n-1\right)d[/tex]

computing the differences of all the adjacent terms

[tex]-15-\left(-5\right)=-10,\:\quad \:-25-\left(-15\right)=-10[/tex]

The difference between all the adjacent terms is the same and equal to

[tex]d=-10[/tex]

The first element of the sequence is:

[tex]a_1=-5[/tex]

Thus, the nth term will be:

[tex]a_n=a_1+\left(n-1\right)d[/tex]

substituting the values [tex]d=-10[/tex]; [tex]a_1=-5[/tex]

[tex]a_n=-10\left(n-1\right)-5[/tex]

[tex]a_n=-10n+5[/tex]

Plug in n = 93 to determine the nth term

[tex]a_{93}=-10\left(93\right)+5[/tex]

[tex]a_{93}=-930+5[/tex]

[tex]a_{93}=-925[/tex]

Therefore, the nth term will be:

[tex]a_{93}=-925[/tex]

A surfboard was originally priced at $199. The store reduced the price by 10%. A customer bought the surfboard using a coupon for $20 off. How many dollars did the customer pay?

Answers

Answer:

$159.1

Step-by-step explanation:

Given that:

Original price of surfboard = $199

Reduction of price done = 10%

Then a coupon is used by a customer for $20 off.

To find:

How many dollars were paid by the customer?

Solution:

First of all, let us find the price after the reduction of 10% from the original price.

10% of $199 = [tex]\frac{10}{100}\times 199 = \$19.9[/tex]

This price is reduced from the original price.

Price after reduction = $199 - $19.9 = $179.1

Now, again there is coupon of $20.

Therefore, final price that the customer had to pay = $179.1 - $20 = $159.1

Write 0.047883 correct to 2 significant figures

Answers

Answer:

0.048

explanation:

Select the correct answer. Which is the simplified form of the expression ? A. B. C. D. here is a photo of it and 40 points and who ever gives me answer marked brainlyest

Answers

We are to simplify the expression given

The simplified form of the expression is option B. 67/10x + 9

Given:

= 3(7/5x + 4) - 2(3/2 - 5/4x)

= [tex] \frac{21}{5} x + 12 - \frac{6}{2} - \frac{10}{4} x[/tex]

= 21/5x + 12 - 6/2 + 10/4x

collect like terms

= 21/5x + 10/4x + 12 - 6/2

= (84x+50x)/20 + (24-6)/2

= 134/20x + 18/2

= 67/10x + 9

Read more:

https://brainly.com/question/1280754

Answer: 67/10x + 9 would be your answer.

4x-8y=-26 9x+4y=13
Please help

Answers

Answer:

X = 0

Y = 3.25

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Answer:

x = 0

y = 3.25

Step-by-step explanation:

You can do elimination. Multiply (9x + 4y = 13) by 2

4x - 8y = -26

18x + 8y = 26

22x = 0

x = 0

4(0) - 8y = -26

-8y = -26

y = 3.25

simplify the expression 3 √ 2 - 5 √ 18​

Answers

−12√2
(mark brainliest if correct plss)

80 points
which of the following points are the first quadrant of the XY-plane ? (there’s more than one answer!)
pls help!
picture to help

Answers

Answer:

A and c

Step-by-step explanation:

Answer and Step-by-step explanation:

This is the first quadrant.                   ^

                                                            |

                                                            |

                         Q2                              |                                    Q1

                                                            |

                                                            |

                                                            |

<--------------------------------------------------|------------------------------------------------------->

                                                            |

                                                            |

                                                            |

                         Q3                              |                                     Q4

                                                            |

                                                            |

                                                           V

So, anything in the first quadrant would be positive (for both values of x and y).

That means E and F are the correct choices, since both (4, 8) and (2, 2) are positive and would be found in the first quadrant.

#teamtrees #WAP (Water And Plant)


F
is directly proportional to
a
.
If
F
=
24
when
a
=
8
find,
F
when
a
=
6

Answers

Answer:

F=6*24/8.....F=6*3=18

The area of a square is 100 square centimeters.
What is its perimeter?
OA. 40 centimeters
OB. 50 centimeters
OC. 80 centimeters
OD. 100 centimeters
OE. 400 centimeters

Answers

Answer:

answer choice a

Step-by-step explanation:

..............

pleeeese help. the question is easy

Answers

Answer:

the answer is : -2x^2+13

Step-by-step explanation:

pls mark brainliest plspls

oh and btw hows ur day been going, hope good, make sure to not forget to drink water :)

give an example of infinite solution

Answers

Answer:

?

Step-by-step explanation:

an example of an i finite solution is
3=3

HELP ASAP PLEASE THANK YOU

Answers

Answer:

I believe X= 15

Step-by-step explanation:

If I get $18 (USD) every 2 weeks and I start with $45.01 how many weeks will it take to get to $130.17?

Answers

It will take you around 4 and a half weeks

can someone help me, i also need you to explain if you can? if not, that’s ok.

Answers

Answer:

sam and eric are going on a trip and thought to rent a car. they have to pay a fee of 30 dollars and an extra 7 dollar for each hour they take. sam and eric's are planned to spend $205 or less. how many hours can eric and sam rent the car?

Step-by-step explanation:

first assign a value for the variable, I will take H as hours

Answer:

Sorry i dont know

Step-by-step explanation:

please help me on this!!

Answers

Answer:

a-4

b-3

c-1

Step-by-step explanation:

One teacher wants to give each student 2/3 of a slice of pizza. If the teacher has 6 slices of pizza, then how many students will she be able to hand out pizza to?

Answers

9 students is the correct answer 6 divided by 2/3 is 9

H = -16t^2 + 84t + 100 what is maxium height

Answers

Answer:

[tex]H=210.25\ \text{units}[/tex]

Step-by-step explanation:

Given that,

[tex]H = -16t^2 + 84t + 100[/tex] ...(1)

We need to find the maximum height

For maximum height, put dH/dt = 0

[tex]\dfrac{d(-16t^2 + 84t + 100)}{dt}=0\\\\-32t+84=0\\\\t=\dfrac{84}{32}\\\\t=2.625\ s[/tex]

Put t = 2.625 in equation (1)

[tex]H = -16(2.625)^2 + 84(2.625) + 100\\\\=210.25\ \text{units}[/tex]

Hence, the maximum height [tex]=210.25\ \text{units}[/tex]

One yard is approximately 0.91 meter. Write a direct variation equation that relates x yards to y meters.

Answers

Answer:

x=(y .91)

Step-by-step explanation:

1 yard means only 1 x

.91 meters which is y

Solve for x please help me out

Answers

Answer: x=5, choice D

Step-by-step explanation:

you have two vertical angles

11x=55

55/11=5

x=5

(Linear Equation) solve by the Elimination method
3x-2y=11 (I)
x-4y=3​

Answers

Answer:

x = 3.8 , y = 0.2

Step-by-step explanation:

Answer:

[tex]\huge\boxed{x=\dfrac{19}{5};\ y=\dfrac{1}{5}\to\left(\dfrac{19}{5};\ \dfrac{1}{5}\right)}[/tex]

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}3x-2y=11&|\text{multiply both sides by (-2)}\\x-4y=3\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-6x+4y=-22\\x-4y=3\end{array}\right}\qquad|\text{add both sides of the equations}\\.\qquad-5x=-19\qquad|\text{divide both sides by (-5)}\\.\qquad\boxed{x=\dfrac{19}{5}}[/tex]

[tex]\text{Substitute it to the second equation}\\\\\dfrac{19}{5}-4y=3\qquad|\text{multiply both sides by 5}\\\\19-20y=15\qquad|\text{subtract 19 from both sides}\\\\-20y=-4\qquad|\text{divide both sides by (-20)}\\\\y=\dfrac{4}{20}\\\\\boxed{y=\dfrac{1}{5}}[/tex]

Here are the ingredients needed to make 8 biscuits.
Biscuits
To make 8 biscuits
90g of butter
35g of sugar
125g of flour
Hamid has 315g of butter
150g of sugar
500 g of flour
Work out the greatest number of biscuits Hamid can make.

Answers

The greatest number of biscuits Hamid can make is 28.

What is the greatest number of biscuits Hamid can make?

The first step is to determine the quantity of each ingredient needed to make 1 biscuits.

Grams of butter needed to make 1 biscuit : 90 / 8 = 11.25gGrams of sugar needed to make 1 biscuit : 35 / 8 = 4.38gGrams of flour needed to make 1 biscuit : 125 / 8 = 15.63g

Now determine the number of biscuits that can be made using each of the ingredients

Butter = 315 / 11.25 = 28Sugar = 150 / 4.38 = 34Flour = 500 / 15.63 = 32

To learn more about ratios, please check: https://brainly.com/question/19257327

#SPJ1

Im confused on this can someone help me out

Answers

For every circle there is 4 triangles. The simplified ratio is 1:2

pls help i got stuck

Answers

Answer:

The sum is -14

Step-by-step explanation:

To solve this problem , first you should look at key words. The key word is SUM. What does sum mean? Sum means ADDING or addition. So,  you know what operation to use and then ADD the values of the 3 cards. -12+3+-5 = -14.

So the sum of the values are Of LuAnn's three cards is -14.   Hope it helps!

                                             ~ Happy holidays

                                           

how many times does 80 go into 766 i need it asap

Answers

Answer:

9

Step-by-step explanation:

Answer:

Step-by-step explanation:

the answer is 9.575

help me find the slope

Answers

m= -6/5
hope this helped!!

How to do this question -14=k-4

Answers

Answer: hope this helps .

Step-by-step explanation:

Other Questions
In order for clients to satisfy identity verification procedures, they must produce which of the following? A.) A single Group A identity document B.) A single Group B1 and a single Group B2 identity document. C.) One identity document each from Groups A, B1, and B2 D.) Both A and B are correct. E.) None of the above Describe how Islam spread so rapidly throughout the Middle East, Africa, and South Asia. (I am so not sure how to answer this...my final is in two days..) What is an open access journal? Anna bought 6 bags of candy for a total of 19.68. Write an equation and solve to figure out how much each bag cost. The excess reactant... a. provides more product in the reaction b. is left over, after the reaction is complete c. has the highest coefficient in every balanced reaction d. is the gas in a balanced reaction 50 POINTS HELP The sensor or detector tells the integrating center what needs to be doneTrueFalse I have a question is $20.21 for the gym membership expensive money or not Read the following question in Spanish about traveling in Panama City and choose the correct answer.Qu estoy comprando si estoy caminando por la Avenida Central, visitando todas las tiendas en busca de gangas?sellosropacomida Solve the perimeter formula for an isosceles triangle, p=2a+b, solve for b.b= p/2a b=p -2ab= 2a/p b=p+2a A batch has 15000 coloured bulbs. 3/5 of the batch are orange in colour & the rest are green . if 1/8 th of the green bulbs are not working , how many green bulbs are functional? What does exercise do to your rate of metabolism QuestionSylvia has $14,000 dollars in her bank account. However, she recently lost her job andis not making money. She has to pay $7,000 per month in bills and expenses. Whenwill her account reach zero? Fill in the table to find the solution.x f(x) = 14,000 - 7,000x014,00012.Sylvia will run out of money inmonths. Select the correct answer.Which sentence best matches a fast food restaurant?A. Le serveur vient la table pour prendre la commande.B. On demande laddition et pale aprs le repas.C. Le pourbolre est obligatolre.D. Le client passe une commande au comptoir et ensuite il faut aller emporter le commands du comptoir. What 9x696566729748736363663636275756? Dont know this pleaseee help meee asappp Which is a true statement about the charter of 1732?it provided king George an opportunity to invade Spain.It was never approved and Oglethorpe founded the colony illegally It required them to house British soldiers in there Holmes It requires them to pay extra taxes and fees to France How to write thhis sentence correctly supposedly he had a great great grandfather who had stole a pig from a one legged gyspy and she put a curse onhim and all of his desencendents PLEASE HELP 1. write the appropriate question in French for the response provided below. Use est-ce que. Oui, il est franais.2. write the appropriate question in French for the response provided below. Use the intonation method.Elles habitent Paris.3. Answer the following question in French in the negative.Est-ce que tu as un crayon?4. translate the sentence "They are watching TV" in French?6. How do you say "They (masculine/plural) are wearing socks" in French? Use the verb mettre.8. Use the 24-hour system to answer the following question in French. Note the hint in parentheses.Quelle heure est-il? (8:30 p.m.)9. How do you say "I hate studying" in French?10. How do you say "The dress is bigger than the skirt" in French? can someone assist me in this question right here? Brian drew oblique segment AB on a coordinate grid and translated it 4 units left from A' B' which statements is true? An incandescent lightbulb is rated at 120 Watts when plugged into a 200 V-rms household outlet. Calculate the resistance of the filament and the rms current. g Steam Workshop Downloader