(C) c varies directly as a and inversely as b. If c= 15 when a = 18 and b = 40, find c when a = 36, and b = 25. = с​

Answers

Answer 1

Answer:

c = 48

Step-by-step explanation:

Given c varies directly as a and inversely as b then the equation relating them is

c = [tex]\frac{ka}{b}[/tex] ← k is the constant of variation

To find k use the condition c = 15 when a = 18 and b = 40 , then

15 = [tex]\frac{18k}{40}[/tex] ( multiply both sides by 40 )

600 = 18k ( divide both sides by 18 )

[tex]\frac{600}{18}[/tex] = k

[tex]\frac{100}{3}[/tex] = k

c = [tex]\frac{100a}{3b}[/tex] ← equation of variation

When a = 36 and b = 25 , then

c = [tex]\frac{100(36)}{3(25)}[/tex] = [tex]\frac{3600}{75}[/tex] = 48


Related Questions

7. Convert the following. (5 marks) a) 10,000 cm² to m²?​

Answers

Answer:

100m^2

Step-by-step explanation:

100 cm in a meter so 10000/100=100

Answer:

10,000 cm^2 = 1m^2

Step-by-step explanation:

100 cm = 1 m

(100cm)*(100cm) = 1 m^2

10,000 cm^2 = 1m^2

show that 296 not not a perfect number​

Answers

Step-by-step explanation:

in which the sum of all it's factor are twice of that no... factor of 296 =1,2,4,8,37........

What are the zeros of the function what are their multiplicities?

Answers

A zero has a "multiplicity", which refers to the number of times that its associated factor appears in the polynomial. For instance, the quadratic (x + 3)(x – 2) has the zeroes x = –3 and x = 2, each occuring once.

One-fourth of a number increased by thirteen is less than two.

Answers

Answer: x < -44

Step-by-step explanation:

alright my fellow dude gamer, i want you to know that "a number" is basically just x

so lets do this

[tex]\frac{1}{4}x + 13 < 2[/tex]

ok now we are going to solve for x, no?

[tex]\frac{1}{4}x < -11[/tex]

i just subtracted 13 from both sides

now we divide -11 by 1/4

[tex]x < -44[/tex]

MAGIC! ABSOLUTELY FANTASTIC! OH MY GOODNESS AHHHHHHH

Comparing credit and debit cards

Answers

Answer:

When you use a debit card, the funds for the amount of your purchase are taken from your checking account in almost real time. When you use a credit card, the amount will be charged to your line of credit, meaning you will pay the bill at a later date, which also gives you more time to pay.

Solve for x

x+0.15x=3.45

Answers

Answer:

thanks for the points new comer you will get use to it

solve for missing side of the right triangle, round to the nearest tenth .

Answers

Pythagorean theorem
a^2 + b^2 = c^2
Let’s say a = 6 and b = 11
6^2 + 11^2 = c^2
36 + 121 = c^2
c^2 = 157
C = squareroot of 157
C = 12.5

Solution: 12.5 m

X=


A. 30

B. 70

C. 110

D. 130

Answers

Answer:

Step-by-step explanation:

the answer is D)130 hope it helps

Math question in attachment

Answers

Answer:

Nope

Step-by-step explanation:

If you do the line test you would see that two dots touch the line and that means it is not a function.

This question is Algebra 1 - write linear functions from word problems

Answers

Takes away 10 each week so 2 weeks would be 20 etc etc
Y= 293 - 10x

Answer: y = -10x + 293

Step-by-step explanation:

Since you start with $293, this is your intercept.

Since you withdraw $10 per week, your m is -10. Per in a sentence means rate of change.

Can someone help me with this question? I've been stuck on it for a while :(

Answers

Answer:

  f(x) = x³ -4x² -5x +20

Step-by-step explanation:

If the function is to have rational coefficients, each complex or irrational square root must have a matching conjugate. That is, both -√5 and +√5 must be roots. If there is a root p, then there is a factor (x -p). The factored form of the minimal polynomial is ...

  f(x) = (x -4)(x +√5)(x -√5)

  = (x -4)(x² -5)

  f(x) = x³ -4x² -5x +20

Lisa is ordering 5 bags of cat food from Canada. Each bag has a mass of 6 kg To determine the shipping costs, Lisa needs to know the total weight in pounds. What is the weight of the cat food in pounds?

Answers

Answer:

About 66 Lb

Step-by-step explanation:

A candy store sells 25 types of candy. Out of these 25 types, 12 contain chocolate. What percent of the candy types sold contain chocolate?

Answers

Answer:

Step-by-step explanation:

[tex]Percentage of chocolate candy = \dfrac{12}{25}*100\\\\ = 12*4\\\\[/tex]

= 48%

Which is the numerical coefficient of the algebraic expression 15 + 10?​

Answers

Answer:

15+10=5(3+2)

Step-by-step explanation:

please help ASAP WHOSOEVERS first will be marked brainliest thank you
When you type the answers i ask please dont send any links pictures are fine but please make it visible and readable
I prefer you type your answers in the text box
please make it make sense
Thank you so much for helping me you do not have to solve the whole thing but if you can AWESOME

Answers

Answer:

why

Step-by-step explanation:

why

on may 1st, the temperatures of 5 European cities were measured and the results were as it follows

Answers

aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

PLEASE HELP!!!!


The graph below shows the time it takes Michael to solve 30 multiplication
flash cards over 7 attempts. In which attempts did he improve by more than 8
seconds from the previous attempt? Check all that apply.



Answers

Answer:

I think it's 2 and 5

Step-by-step explanation:

I hope this helps

Answer:

4,6,2,7

Step-by-step explanation:

A humpback whale can eat 4.4 x 10^3 plankton a day during feeding season. If the feeding season lasts 120 days, find the total number of plankton a humpback would eat by the end of feeding season. Write your answer in scientific notation

Answers

Answer:

An average-sized blue whale will eat 2,000-9,000 pounds (900-4100 kg) of plankton each day during the summer feeding season in cold, arctic waters ( about 120 days).

Step-by-step explanation:

How many real solutions does the function shown on the graph have?

no real solutions

one real solution

two real solutions

cannot be determined

Answers

Answer:

you can find the answer in this link bit.3ckFc

Step-by-step explanation:

no real solution ig

Find the quotient. Use a model to help you divide

6
.
15
÷
5
=
A.
1.03

B.
1.23

C.
1.3

D.
1.2

Answers

Answer:

Step-by-step explanation:

6.15/5=1.23

The answer is B.

if the given data is 20,30 3x+5 divided by 2 ,50, 60 and the median is 40 find the value of x​

Answers

Answer:

in the image. Median is the middle number

before dividing 0.0045 divided by 9 what will the dividends become after the decimals is moved

Answers

Answer:

wsjkolp

Step-by-step explanation:

qwdcdfvhbjnkml,;.

Use the information given in the figure to find the length SU.
If applicable, round your answer to the nearest whole number.
The lengths on the figure are not drawn accurately.

Answers

Answer:

We'll calculate ru:

RU^2 = 65^2 - 52^2

RU^2 = 1,521

RU = 39

SU^2 = 89^2 -39^2

SU^2 = 7,921 - 1,521

SU^2 = 6,400

SU = 80

Step-by-step explanation:

25 + 100 = ?

Can You Answer​

Answers

[tex] \: [/tex]

[tex] = 125[/tex]

Step-by-step explanation:

[tex]25 + 100 = ?[/tex]

need to add these numbers so we can get the solution

[tex]25 + 100 = 125[/tex]

there you go , we have a solution

hope it helps

[tex] \: [/tex]

PLEASE HELPPP RUNNING OUT OF TIMMEE
Two shops sell baked beans in different sized tins. Calculate the price per 1.25 kg for shop B. Give your answer in pence.

Shop A) 1.25kg for £4.85
Shop B) 250g for £0.88

Answers

Answer:

YOUR ANSWER IS SHOP B) 250g for £0.88

HERE YOUR ANSWER

HOPE IT HELPS YOU

PLEASE MARK AS BRAINLIEST



4.) Mr. Lakey is a taxi cab driver. He earns $5.00 hour plus tips. One week he works 40
hours, receiving $287 in tips. Find his weekly gross income.

Answers

Answer:

87

Step-by-step explanation:

earning rate (R) = $5/hr

total (T) = $287

time (t) = 40 hr

tips = T - Rt

= $287 - $5*40

$87

a string 27.2 meters long is cut into shorter pieces, each measuring 3.4 meters long. How many pieces were cut from the 27.2-metres string ?

Answers

Answer:

There are 8 pieces of string cut

Explanation:

27.2 ÷ 3.4 = 8

find the unknown angle ​

Answers

Answer:

total angles in triangle = 180

180 = 44+56+ y

y = 180-44-56

y = 80°

now to find z and x

we know the 2 straight lines are parallel (indicated by arrows)

x = 56°

z = 44°

how?

alternate angles theorem

Alternate angles are angles that occur on opposite sides of the transversal line and have the same size. Alternate angles are equal: We can often spot interior alternate angles by drawing a Z shape: There are two different types of alternate angles, alternate interior angles and alternate exterior angles.

easy one for you folks.​

Answers

Answer:

if its easy do it

Step-by-step explanation:

Answer:

7.5/15 or something because yes

Bethany has a mother, 6 sisters, 3 aunts and 2 grandmothers. How many girls are in this family?​

Answers

Answer:

13

Step-by-step explanation:

1 plus 1 plus 6 plus 3 plus 2 equals 13

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