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
aliya0001 [1]
2 years ago
10

Y varies inversely with x. When x = 3 then y = 5. Find the value of x when y = 21

Mathematics
1 answer:
alexgriva [62]2 years ago
7 0

Answer:

  • y=1/x
  • y=k/x
  • k=yx
  • given x=3,y=5
  • k=5×3=15
  • when y=21
  • x=k/y
  • x=15/21=0.7143ans

You might be interested in
21. If the area of the plane shape below is<br>36cm, find its height.​
mariarad [96]

Answer:

4 cm

Step-by-step explanation:

The figure is a parallelogram with area (A) calculated as

A = bh ( b is the base and h the perpendicular height )

Here A = 36 and b = 9 , thus

9h = 36 ( divide both sides by 9 )

h = 4 cm

4 0
3 years ago
Read 2 more answers
2.5y; when y = -5.2
attashe74 [19]
The answer is -13. You figure it out by multiplying 2.5×-5.2=13
7 0
2 years ago
What is 15/1/20 as a improper fraction
Lera25 [3.4K]
I'm not sure what you mean, but if you mean 15 and 1/20th, you just multiply 15 by 20 and add one which is 301 and keep the denominator
3 0
3 years ago
An account earns simple interest. (a) Find the interest earned. (b) Find the
Debora [2.8K]

Answer:

#a. $80

#b. $1680

Step-by-step explanation:

We are given;

  • Amount invested (principal) is $1600
  • Rate of interest is 5%
  • Time = 1 year

We are required to determine the amount of simple interest earned and the amount or balance in the account after 1 year.

#a. Interest earned

To calculate simple interest we use the formula;

I = (PRT) ÷ 100

Where, P is the principal, R is the rate, T is the time and I is the simple interest.

Therefore;

I = (1600 × 5 × 1) ÷ 100

 = $80

Therefore, simple interest earned is $80

#b. Balance of the account (Amount accrued)

We are going to use the formula;

A = P + I , where A is the amount accrued, P is the principal and I is the simple interest earned.

Therefore;

Account balance = $1600 + $80

                            = $1680

Thus, the account balance after 1 year will be $1680

8 0
2 years ago
Solve one third plus seven ninths equals blank
ruslelena [56]

Answer:

10/9ths or 1& 1/9

Step-by-step explanation:

1/3 + 7/9 =

× 9/9. × 3/3

9/27 + 21/27 = 30/27

OR 1 & 1/9

5 0
3 years ago
Other questions:
  • What is the inequality for <br> V-6&lt;23
    13·2 answers
  • Find the value of x and then find the length of RT<br> RT =<br> X=
    13·1 answer
  • 6x+19+3x-6+5x-15=180​
    15·2 answers
  • Solve for x. ​ −2(x+14)+1=5 ​ ​ Enter your answer in the box.
    11·2 answers
  • What are the solutions of the equation
    5·1 answer
  • Jay's hair grows about 8 inches each year. Write a function that describes the length l in inches that Jay's hair will grow for
    10·2 answers
  • How do I make both these equations into a elimination equation? Look at the pic I’m very confused!
    10·1 answer
  • Find surface area of the prism. Thanks.
    14·2 answers
  • Mr. Loe gave a 15 question quiz worth 23 points. Multiple
    7·1 answer
  • five people arrived at the check _ out counter of a hotel at the same time, in how many different ways can the people line up?​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!