1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kamila [148]
3 years ago
6

Y is inversely proportional to x. When y=25, x=4 Work out y when x=20

Mathematics
1 answer:
ipn [44]3 years ago
8 0

Answer:

y=5 when x=20

Step-by-step explanation:

Using the format for inverse proportions: y=k/x

To find k, substitute 25 in for y and 4 for x to find:

25=k/4 ⇒ k=100

Using this we can substitute k and x in for 100 and 20 to find:

y=100/20 ⇒ y=5

You might be interested in
The wholesale price for a shirt is $5.50. A certain department store marks up the wholesale price by 40%. Find the price of the
Kazeer [188]

Answer:

$7.7

Step-by-step explanation:

Hello, I can help you with this

you can solve this by using a simple rule of three.

Step 1

define

if the wholesale price for a shirt is $5.50,it is 100 percent

$5.50⇔100%

the new price(x) is 40% more than the original, it means 140%

x  ⇔ 140%

the relation is

\frac{5.5}{100}= \frac{x}{140}\\

Step 2

solve for x(isolate x)

\frac{5.5}{100}= \frac{x}{140}\\x=\frac{5.5*140}{100}\\x=7.7

the price of the shirt in the department store is $7.7

Have a nice day.

7 0
3 years ago
Dominic had $500 in his wallet. He went to the nursery and purchased 8 rose bushes at $22 each, 12 evergreen shrubs at $18 each,
timurjin [86]

Answer:

176+216+75=467

500-467=33

so 33 is the answer

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
HELP PLZ I NEED TO PASS LESSON
Ierofanga [76]

Step-by-step explanation:

452

8 0
3 years ago
Four sisters are all 2 years apart in age. The
RoseWind [281]
18 because it has equal so that means that you divide
3 0
3 years ago
Patrick deposited 6875 into a savings account 17 years ago. The account has an interest rate of 4.9% and the balance is currentl
larisa86 [58]
Nooo thia is not the same thing
6 0
3 years ago
Other questions:
  • The length of a rectangle is 5t+6 and its height is t^6 , where t is time in seconds and the dimensions are in inches. Find the
    8·1 answer
  • Find the surface area of the complex figure 15 feet
    15·1 answer
  • VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
    6·2 answers
  • I need helppp!!! <br> −50=10s
    14·1 answer
  • Simplify the expression below.<br> 12b + 86 + 5b<br> 0 25 + b<br> O 25(3b)<br> 25b<br> 3b
    12·1 answer
  • If M is the set of all square of integers that are less than 100 and N is the set of all positive even numbers that are under 30
    10·1 answer
  • If you use 2 cups of sugar for every 3 cups of lemon juice how many cups of sugar do you need for 9 cups of juice
    7·1 answer
  • PLS HELP!! WILL MAKE BRAINLIEST!!!!
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=Evaluating%20Combination%20Notation%20%26%20Problem%20Solving" id="TexFormula1" title="Evaluat
    12·1 answer
  • When proving the product, quotient, or power rule of logarithms, various properties of logarithms and exponents must be used.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!