what is the proportional realashionship

Answers

Answer 1

Answer: "Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality"."

Step-by-step explanation: I got this from a website. Hope it works!!!


Related Questions

I’ll give the Brainliest to who answers this question with a reasonable explanation.

If Jan can buy 12 copies of a certain book for $40, what is the unit rate for cost per copy? How much would it cost her to buy 18 copies at the same rate?

Thank you!

Answers

$40/12 = unit rate simplify = 10/3
$10/3 per book
18 * 10/3 = $60 for 18 copies

Kiera is contacting the poll workers from the last election to see whether they are willing to work in the next election. During the last election, 42\%42%42, percent of the poll workers were under 606060 years old. Let WWW be the number of poll workers Kiera contacts before reaching one that is 606060 years old or older. Assume that each poll worker's age is independent. Find the mean and standard deviation of WWW. Round your answers to one decimal place.

Answers

Answer:

Mean: 1.7 and standard deviation 1.1.

Step-by-step explanation:

42% Of the poll workers are less than 60 years old. In other words, 58% of the poll workers are 60 years old: 1-0.42 = 0.58. So W is a geometric variable where the first "success" is poll worker who is at least 60years old.

Mean: 1/0.58 = 1.7241 poll workers, about 1.7 poll workers.

Standard deviation: sqr(1-p)/p = sqr(1-0.58)/0.58 = 1.1174 poll workers, about 1.1 poll workers.

The required Mean and the standard deviation are given as 1.7  and 1.1 respectively.

Given that,
During the last election, 42%, percent of the poll workers were under 60 years old. Let W be the number of poll workers Kiera contacts before reaching one that is 606060 years old or older.

What is mean?

The mean of the values is the ratio of the total sum of values to the number of values.

here,
42% of poll workers are under the age of 60. Also, 58% of poll workers are above the age of 60.
= 1 - 0.42 = 0.58.


So "W" is a geometric variable with the first success being a poll worker beyond the age of 60.

Mean =  1/0.58
         = 1.7 poll workers.

Standard deviation = √[(1-0.58)/0.58]
                             = 1.1 poll workers.

Thus, the required Mean and the standard deviation are given as 1.7  and 1.1 respectively.

Learn more about mean here:

https://brainly.com/question/15397049

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pls help!! A cylindrical vase has a diameter of 12 inches and a height of 12 inches. If the vase is filled 3/4 full of soil, how many cubic inches of soil are in the vase?

Answers

Answer:

Answer: the vase contains 1017.36 inches³ of soil.

Step-by-step explanation:

We would apply thee formula for determining the volume of a cylinder which is expressed as

Volume = πr²h

Where

h represents the height of the cylinder

r represents the radius of the cylinder.

π is a constant whose value is 3.14

From the information given

Diameter = 12 inches

Radius = diameter /2 = 12/2

Radius = 6 inches

Height = 12 inches

Therefore,

Volume of the cylindrical vase =

3.14 × 6² × 12 = 1356.48 inches³

If the vase is filled 3/4 full of soil, then the volume of soil in the vase is

3/4 × 1356.48 = 1017.36 inches³

Find the distance between the two points in simplest radical form.
(8, -3) (6, -8)

Answers

Answer:

[tex]d = \sqrt{29}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra II

Distance Formula: [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Step-by-step explanation:

Step 1: Define

Point (8, -3)

Point (6, -8)

Step 2: Find distance d

Substitute:                    [tex]d = \sqrt{(6-8)^2+(-8+3)^2}[/tex]Subtract/Add:               [tex]d = \sqrt{(-2)^2+(-5)^2}[/tex]Exponents:                   [tex]d = \sqrt{4+25}[/tex]Add:                              [tex]d = \sqrt{29}[/tex]

I know how to multiply 1-12.

Answers

Answer:

Good

Step-by-step explanation:

What is your question?

Just type it in the comments

Solve for x -1/2x < -12

Answers

Answer:

x < 24

Step-by-step explanation:

-1/2x < -12

1) Isolate x!

-1/2x < -12

×-2 ×-2

x < 24

The number of students attending the seventh-grade class trip is 4 times the number of teachers attending.

What is the ratio of teachers to students attending the class trip?

Answers

Answer:

1:4

Step-by-step explanation:

1 would be the teachers

times 4 would be the students

Answer:   1:4 or 2:16

It can be either answer because the ratios are multiplied with that but it can be divided enough to be 1:4 so any answer would be right if you multiply the ratio by 4

if cost $25 per day to rent a tux plus a $50 cleaning fee. if samuel paid $200, how many days did he have the tux?

Answers

Answer:

6 days

Step-by-step explanation:

Answer:

he had the tux for 6 days because he paid the cleaning fee

Step-by-step explanation:

The lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean, μ = 272 days and standard deviation, σ = 16 days. ​(a) What proportion of pregnancies lasts more than 300 ​days? ​(b) What proportion of pregnancies lasts between 260 and 284 ​days? ​(c) What is the probability that a randomly selected pregnancy lasts no more than 252 ​days? ​(d) A​ "very preterm" baby is one whose gestation period is less than 236 days. Are very preterm babies​ unusual?

Answers

Answer:

a) 0.04

b) 0.54674

c) 0.10565

d) It is not unusual to have preterm babies

Step-by-step explanation:

The lengths of a particular​ animal's pregnancies are approximately normally​ distributed, with mean, μ = 272 days and standard deviation, σ = 16 days.

We solve the above question using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean

σ is the population standard deviation.

​(a) What proportion of pregnancies lasts more than 300 ​days?

z = 300 - 272/16

= 1.75

Probability/proportion value from Z-Table:

P(x<300) = 0.95994

P(x>300) = 1 - P(x<300) = 0.040059

Approximately = 0.04

​(b) What proportion of pregnancies lasts between 260 and 284 ​days?

For x = 260 days

z = 260 - 272/16

= -0.75

Probability value from Z-Table:

P(x = 260) = 0.22663

For x = 284

z= 284 - 272/16

= 0.75

Probability value from Z-Table:

P(x = 284) = 0.77337

The proportion of pregnancies lasts between 260 and 284 ​days is

P(x= 284) - P(x = 260)

0.77337 - 0.22663

= 0.54674

​(c) What is the probability that a randomly selected pregnancy lasts no more than 252 ​days?

No more than means less than or equal to, hence, we are to find

P ≤ 252 days

Hence,

z = 252 - 272/16

= -1.25

Probability value from Z-Table:

P(x ≤ 252) = 0.10565

​(d) A​ "very preterm" baby is one whose gestation period is less than 236 days. Are very preterm babies​ unusual?

We find the probability of 236 days

For x = 236

z = 236 - 272/16

z = -2.25

Probability value from Z-Table:

P(x<236) = 0.012224

Converting to percentage = 1.2224%

Hence, it is not unusual to have preterm babies

3x - 5y - z + 13
pls show your work

Answers

3x-5y-z+13.

it is simplified all the way there is nothing to add

If IN=2x+10 and AT=26, find x.

A.) 12
B.) 10
C.) 6
D.) 8

Answers

The answer would be D.) 8 because...
2(8)+10
16+10=26
Hope this helps!! :)

Mary is buying hair clips online. The online store charges a fee for each hairclip and a shipping fee. On Monday, Mary placed an order for 8 hairclips, and her total came to $33.75. On Friday, she placed an order for 11 hair clips, and her order came to $44.25. Find the price of each hair clip and the price of shipping.

Answers

$4 a clip $1.00 for shipping for each order because 33.75x44.25=78
4x19(clips total)= 76
78-76=2
2/2=1
so $1 for shipping for each order and $4 a clip

b) The circumference of a circular field is 220 m.
(i) Find its diameter and radius.
(ii) Find the cost of paving stones all over it at Rs 25 per sq. m.​

Answers

Answer:

sorry I don't know 2...

But first I can tell....

Step-by-step explanation:

circumference = 220m

To Find :- It's diameter and it's radius...

Solution:-

circumference of circle = 2*pi*r

pi=22/7

220 = 2*22/7*r

220 = 44r/7

220*7 = 44r

1540 = 44r

r = 1540/44

r = 35m....

d = 35*2

d = 70m...

Hence, Diameter of circular field is 70m and radius is 35m

Write the equation of each line in slope-intercept form.

Answers

Answer:

-4/2x+3 or if you simplyfy it will be -2x+3

Step-by-step explanation:

Answer:

[tex]y = -\frac{1}{2}x + 3[/tex]

Find the slope of the line that goes through the points (5,11) and (13,9).

Answers

Answer:

-1/4

Step-by-step explanation:

using y2-y1/x2-x1, you can get 9-11/13-5, -2/8, which gives you a slope of m=-1/4

Type the correct answer in the box. Round your answer to the nearest hundredth.

A class consists of 55% boys and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35% of the class are girls and scored an A on the test. If a student is chosen at random and is found to be a girl, the probability that the student scored an A is ​

Answers

if you add 55% and 45% the total is 100% so 45/100 are girls.  35% of the girls scored and A  so 35/45  is the probability that it is a girl chosen or 7/9. the probability is 7 out of 9.

Ryan and Sarah collect baseball cards. Ryan has 150 baseball cards and collects 10 cards per week. Sarah has 200 baseball cards and collects 5 cards per week. After how many weeks will Ryan and Sarah have the same number of cards?​

Answers

Answer:

i need help on this question too

Step-by-step explanation:

Answer:

I think X=10 but im not for sure.

Step-by-step explanation:

150 (X+10) = 200 (X+5)

150x+1500   200X+1000

-150X            -150X

1500               50X+1000

-1000                      -1000

500                50X

50                   50

10=X

find the length of the missing of the missing triangle. Round your answer to the nearest tenth. Show your work​

Answers

Answer:

17.32 cm

6.21 cm

Step-by-step explanation:

a^2+b^2=c^2

a^2+22^2=28^2

a^2=300

6^2+4^2=c^2

c=6.21

Hopefully this helps!

Tom rolls a fair dice and flips a fair coin.
What is the probability of obtaining a number bigger than 2 and a head?

Answers

Answer:

1/3 or 33.33333333%

Step-by-step explanation:

The chance of getting a head in the coin flip is 1/2 or 50%.

The chance of getting a number bigger than 2 (3,4,5,6) is 4/6 or 2/3 or 66.6666666666%. (There are a total of four possibilites in six.)

Hence, 50% * 2/3 = 33.333333333333%.

Hope this helped!

Can someone please help me with my homework !

Answers

Answer:

Nah ;)

Step-by-step explanation:

Write the ratio as a fraction in simplest form 4 to 56

Answers

Answer:

1 / 14

Step-by-step explanation:

4 / 56 = 1 / 14

4 / 4 = 1

56 / 4 = 14

Elliot borrows $900 to buy an appliance at a yearly simple interest rate. He takes 3 years to pay off the loan and interest. He pays $135 in interest. What is the interest rate?

Answers

He pays $135 for 3 years. So that’s $45/year. Considering 900 is your 100%, how many percents are represented by $45 in 900?

1)
You can see that 900 = 9x100.
So you can divide 900 by 9 to get 100.
That means you can also divide 45 by 9 (it’s proportional)
You have 45 for 900, you divide by 9 so you get 5 for 100 -> 5%

Or 2)
(Photo)
It’s a cross-multiplication :
(45 x 100)/900 = 5%
So the interest rate is 5%.


(Sorry if it’s confusing, English isn’t my first language..)

pls help Solve for m. -7+4m+10=15-2m

Answers

Answer:

m=2

Step-by-step explanation:

Answer:

[tex]m=2[/tex]

Step-by-step explanation:

[tex]-7+4m+10=15-2m[/tex]

Isolate the variable m. Combine like terms (-7+10):

[tex]3+4m=15-2m[/tex]

Subtract 3 from both sides (inverse operations):

[tex]3-3+4m=15-3-2m\\\\4m=12-2m[/tex]

Add 2m to both sides (inverse operations):

[tex]4m+2m=12-2m+2m\\\\6m=12[/tex]

Divide both sides by 6 to isolate m (inverse operations):

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

Since this cannot be further simplified, m is equal to 2.

:Done

What is the missing angle? *

PLS I NEED HELP DUE IN 10 MINS

Answers

Answer:

80

Step-by-step explanation:

a triangle is 180 degrees in all 60+40 is 100 so by that you can tell its 80

The equation y-2/3=(x-1/4) is written in point-slope from what equation in slope-intercept from

Answers

Answer:

y=x+5/12

good luck...

Can someone please tell me if the following relations are functions please?

Answers

yes the first one is a function. The second one with the arrows is not.

[
1
Solve the equation.
y + 3 = y + 9
f
O y= 1
O y = 3
O y = 6
O y = 9

Answers

The third option Y=6

‘P' is the path of a point moving at the same distance from a fixed point ‘Q'. The fixed distance is ‘R' and the distance around the circle is ‘S'. What is P, Q, R, S?

Answers

Answer: P is arc; Q is the centre of the circle; R is the radius; S is the circumference

Step-by-step explanation: P is arc: it is a continuous part of the circumference (S) of the circle;

Q is the centre of the circle which is at any point in time R points away from P;

R is the radius: the line segment between any point of a circle and its centre, Q;

S is the circumference of the circle: the line that bounds a circle.

which measurement is a reasonable height for a child? Explain your choice
A.
[tex]1.39 \times {10}^{2} cm[/tex]
B.
[tex]8.3 \times {10}^{5} cm[/tex]
C.
[tex]1.48 \times {10}^{1} m[/tex]

Answers

Answer:

A

Step-by-step explanation:

because a is 139cm and child is 139 cm not 830000 or not 1.48

A for sure
If you multiple 1.39 times 10 squared you get 139cm which is about 54in.


State the slope and y-intercept of the graph of y + 2x = 3.

Answers

Answer:

y-intercept=(0, 3)  slope=-2

hope this help

Step-by-step explanation:

Answer: y intercept= 3 slope is -2

Step-by-step explanation: you subtract 2x from the left and right side and end up with y= -2x+3 if you substitute x for 0 then you get 3 for the y intercept.

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