If c varies diráctly as (1 + 1) and c= 8, when r = 3, calculate the value ofr when c= 20.
(4marks)​

Answers

Answer 1

c = k(r + 1)

8 = k(3 + 1)

8 = 4k

8/4 = k

2 = k

c=2(r + 1)

When c = 20, then

20 = 2(r + 1)

20 = 2r + 2

20 - 2 = 2r

18 = 2r

18/2 = r

9 = r

Therefore, the value of r is 9 when c is 20.


Related Questions

The speed of light is 3 x 10^8 meters/second. If the sun is 1.5 X 10^11 meters from earth, how many seconds does it take the sunlight to reach the Earth? (Time = Distance/Speed).

Answers

Answer:

Time = 500 seconds  or 8.333 minutes

Step-by-step explanation:

Time = Distance/Speed

Speed of light = 3 x 10^8 meters/second

Distance=1.5 X 10^11 meters

Time = 1.5 X 10^11 meters/3 x 10^8 meters/second

We solve using the scientific notation. When 8 is taken to the top it is subtracted from 11 ( the base 10 is the same -- laws of exponents)

Dividing 1.5  by 3 gives 0.5 .

Time = 1.5 X 10^(11- 8) meters/3 meters/second

Time = 0.5 X 10^3 seconds

Time = 500 seconds

Dividng seconds with 60 will give minutes

Time= 500/60 = 8.333 minutes

HELPPPP ASAP
313,785 is divisible by...

A. 2,5,10

B. 2,3,4,5,10

C. 3,4,5,6,9

D. 3,5,9

Answers

Answer:

The answer is 3, 5, and 9

PLEASE HELP MEH NOW!! I WILL MARK BRAINLIEST 1/8 divided by 5

Answers

Answer:

1/40 or .025

Step-by-step explanation:

Just flip the 5 then multiply instead of dividing.

[tex]\frac{1}{8}*\frac{1}{5}[/tex]

You turn 5 into 1/5 by flipping it.

When you multiply them you get.

[tex]\frac{1}{40}[/tex]

or

.025

Hope this helps! Have a blessed day!

Can someone help me with this please ?

Answers

Answer:

ok so 5x5 which is 5 to the 2nd power is 25 and 25+3= 28 and 28 is ur answer :D

Step-by-step explanation:

Answer:

y=28

Step-by-step explanation:

Which relations represent functions? ​

Answers

I’m pretty sure the anser is b

Answer:

i'm pretty sure the answer is the second one.

explanation:

a function is x can have more than 1 y but y cant have more than 1 x.

PLEASE HELP QUICKLY!!!!!!!!

Answers

Answer:

144 m^2

Step-by-step explanation:

calculate the square bottom, 6x6 = 36 calculate triangle area 9x6/2 = 27 multiply by 4 triangle faces and add it all together to get 144

plz help me with this

Answers

Answer:

slope:3

y intercept:1

equation:y=3x+1

Step-by-step explanation:

Last week at Best Bargain, 20% of the computers sold were laptops. If 70 computers were sold last week, how many were laptops?

Answers

100x70 = 7000
7000/20= 350
Answer: they were a total of 350 laptops

Where’s the leg, & hypotenuse for this triangle?!

Pls help, I’ll give brainliest!

Answers

The side on the right, directly across from the right angle.
The hypotenuse is across the tiny square
The legs are the other two sides :)

If the production rate is 1,325 cookies per hour at a bakery, how many cookies will be produced in an 8 hour shift?

Answers

Answer:

10,600 cookies will be made in 8 hours

Step-by-step explanation:

1325 × 8 = 10,600

What is the next term in the following sequence?
-3.4, 11, 18, ...
27
25
7
12

Answers

Answer:

the difference is seven and the next answer should be 25 because 18+7=25

Answer:

25

Step-by-step explanation:

In order to find the answer to this question you must find the rule that the sequence goes by and then add.

You can see that it adds seven in order for it to reach four and then add's seven again to reach eleven meaning the rule of this sequence is plus seven.

So now just add:

[tex]18+7=25[/tex]

[tex]=25[/tex]

Hope this helps.

Hi everyone,Can someone please explain me these I am confused I really need help if you can help please help me.

Answers

Answer:

36

Step-by-step explanation:

Just add the students with doing this: number of studentsxsiblings

Answer:

For number one count all dots and for two start counting from 4 siblings

Step-by-step explanation:

Use the zero product property to find the solutions below

Answers

Answer:

Step-by-step explanation:

1. (x - 3)(x + 7) = 0

  By zero product property,

  (x - 3) = 0 ⇒ x = 3

  (x + 7) = 0 ⇒ x = -7

2. (2x + 6)(x - 7) = 0

   2(x + 3)(x - 7) = 0

   By zero product property,

   (x + 3) = 0 ⇒ x = -3

   (x - 7) = 0 ⇒ x = 7

3). (4x - 2)(x + 4) = 0

   2(2x - 1)(x + 4) = 0

   (2x - 1) = 0 ⇒ x = [tex]\frac{1}{2}[/tex]

   (x + 4) = 0 ⇒ x = -4

4. (5x - 1)(3x + 9) = 0

   3(5x - 1)(x + 3) = 0

   By zero product property,

   (5x - 1) = 0 ⇒ x = [tex]\frac{1}{5}[/tex]

   (x + 3) = 0 ⇒ x = -3

5. (x - 8)(x + 2) = 0

   By zero product property,

   (x - 8) = 0 ⇒ x = 8

   (x + 2) = 0 ⇒ x = -2

3000 milliliters in 18 hours is how many liters per day?

Answers

Answer:

The answer is 166

Step-by-step explanation:

How you find the answer is easy, you just divide 3,000 by 18. So it will look like this: 3,000/18. Then, once you have that, put the equation into a calculator and you get 166.

The number of liters in a day is 4 liters.

What is the unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given that, 3000 milliliters in 18 hours.

Here, in 1 hour number of milliliters

= 3000/18

= 166.7

We know that, 1 day = 24 hours

So, the number of milliliters in 24 hours is

166.7×24

= 4000.8 milliliters

As we know that, 1 liter = 1000 milliliters

Now, 4000.8 milliliters = 4000.8/1000

= 4.0008 liters

≈ 4 liters

Therefore, the number of liters in a day is 4 liters.

To learn more about the unitary method visit:

brainly.com/question/22056199.

#SPJ2

Find the measurement

Answers

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

[tex]6z + 7 = 8z - 9[/tex]

[tex]8z - 9 = 6z + 7[/tex]

Add sides 9

[tex]8z - 9 + 9 = 6z + 7 + 9[/tex]

[tex]8z = 6z + 16[/tex]

Subtract sides 6z

[tex] - 6z + 8z = - 6z + 6z + 16[/tex]

[tex]2z = 16[/tex]

Divide sides by 2

[tex] \frac{2z}{2} = \frac{16}{2} \\ [/tex]

[tex]z = 8[/tex]

Thus ;

[tex]NP = 8z - 9[/tex]

[tex]NP = 8(8) - 9[/tex]

[tex]NP = 64 - 9[/tex]

[tex]NP = 64 - 4 - 5[/tex]

[tex]NP = 60 - 5[/tex]

[tex]NP = 55[/tex]

Done...

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

write the equation y =mx+b in slope intercept form!!! thank you and pleaseee hurryyyy

Answers

Answer:

y =mx+b that it lolll

Step-by-step explanation:

How long can you hold your breath? A statistical question or nonstatistical question

Answers

Answer:

nonstatistical

Step-by-step explanation:

Have a great day and hope this helps

Answer:

statistical

Step-by-step explanation:

i did it

Hassem and his family cut an apple pie into 5 equal slices and a blueberry pie into 10 equal slices. They ate Three-fifths of the apple pie. If they ate the same fraction of the blueberry pie, how many slices of the blueberry pie did they eat?

3
4
5
6

Answers

4 is the correct answer

Answer: It´s 6.

Step-by-step explanation:

For the vectors u = ⟨2, 9⟩, v = ⟨4, –8⟩, and w = ⟨–12, 4⟩, what is u + v + w? ⟨6, 1⟩ ⟨6, 5⟩ ⟨-6, 5⟩ ⟨-6, 21⟩

Answers

Answer:

< - 6, 5 >

Step-by-step explanation:

Add the corresponding components of each vector, that is

u + v + w

= < 2, 9 > + < 4, - 8 > + < - 12, 4 >

= > 2 + 4 - 12, 9 - 8 + 4 >

= < - 6, 5 >

Answer: C) < - 6, 5 >

Step-by-step explanation: :)

what's the answer of 3x + 5=17​

Answers

Answer:

x=4

Step-by-step explanation:

What does this equal ?
7000( 1 + 2%/12) ^ (12 • 20)

Answers

Answer:

10439.29640086

Step-by-step explanation:

Is this function in Slope-Intercept Form, Point Slope Form, or Standard Form?
y+4=-2(x-2)
A. Slope-Intercept Form
B. Point Slope Form
C. Standard Form

Answers

It’s gonna be standard form

Answer:

this is point slope form

Step-by-step explanation:

point slope form is y-y1=m(x-x1)

slope intercept is y=mx+b

standard form is Ax+By=c

a pool of linen container 100 meters. three butete brought 15.75 meters, 22.50 meters and 12.25 meters respectively. how many meters of line was left after the sale

49 m


Answers

Answer:

49.5 meters of linen were left after the sale.

Step-by-step explanation:

Given that there are 100 meters of linen

And 15.75, 22.50 and 12.25 meters are sold.

This means that the sold linen has to be added  to find the total linen sold.

And then the quantity of sold linen will be subtracted from 100 to find the meters of linen left.

[tex]Total\ linen\ sold = 15.75+22.50+12.25 = 50.5\ meters[/tex]

Left linen will be:

[tex]=100-50.5 = 49.5[/tex]

Hence,

49.5 meters of linen were left after the sale.

please 20 POINTS!!!!!!!!!!!!!!!!!
A is located at (-4,0) on the coordinate plane and C is located at (2, 10). Angle CBD measures 100 degrees. Which of the following could be the coordinates of E and G so that angle HFE also measures 100 degrees?

Answers

Answer: e(-2,-2) and G(4,6)

Step-by-step explanation:

Kiran's family is having people over to watch a football game. They plan to serve sparkling water and pretzels. They are preparing 12 ounces of sparkling water and 3 ounces of pretzels per person. Including Kiran's family, there will be 10 people at the gathering.
A bottle of sparkling water contains 22 ounces and costs $1.50. A package of pretzels contains 16 ounces and costs $2.99. Let LaTeX: nn represent number of people watching the football game, LaTeX: ss represent the ounces of sparkling water, LaTeX: pp represent the ounces of pretzels, and LaTeX: bb represent Kiran's budget in dollars. Which equation best represents Kiran's budget?

Answers

The answer to your question is 16$ and 50 cents

At the beginning of the season, Jamie pays full price for a ticket to see the Panthers, her favorite baseball team. the panthers currently have 33 wins and 31 losses. A. Represent the total change in the cost of a ticket given their losses B.What is the cost of a ticket for the nest game they play. (A or B question)

Answers

Answer: a. -$12.71

b. $36.93

Step-by-step explanation:

Given data:

No of loss = 31

No of wins = 33

•Had to complete the question first,

Given that the price of the ticket at the beginning of the season = $49.64

the ticket price decrease = $0.41 for every loss

Solution:

a) The cost of the ticket decreases by $0.41 for every game loss.

Change in cost = -$0.41 × number of losses

= -$0.41 × 31

= -$12.71

b) The cost of a ticket for the next game given they have 31 losses is:

Cost of ticket = Initial cost of ticket + change in cost

= $49.64 - $12.71

= $36.93

w+w+w+6/3+4(-3/4w+7)=9w-(3w-10)
What is w?

Answers

Answer:

w=3.33

Step-by-step explanation:

you should solve carefully surely u will get that answer...it won't be easy to solve it using phone that is y I didn't send solution

2.3 × 2² ÷ 2- 8·9 help please

Answers

Answer:

67.4

Step-by-step explanation:

HELP ME PLEASE I NEED THIS IN THE NEXT 10 MIN POSTED AT 10:42

Answers

Answer:

A+b=C

Step-by-step explanation:

Describe the slope of the line (1,-1), (4,3)

Answers

Y=0 x=1.75

Step by step explanation
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