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
Brilliant_brown [7]
1 year ago
8

Use the given information to find the unknown value:y varies inversely with a. When x = 4, then y= 4. Find y when I = 2.Iyy =hel

p (numbers)

Mathematics
1 answer:
Mashutka [201]1 year ago
3 0

Inverse variation:

y=\frac{k}{x}

k is a constant

Use the given information (when x=4 y=4) to find the value of the constant:

\begin{gathered} 4=\frac{k}{4} \\  \\ \text{Multiply both sides of the equation by 4:} \\ 4\times4=4\times\frac{k}{4} \\  \\ 16=k \\  \\  \\ k=16 \end{gathered}

Then, the given relationship has the next equation:

y=\frac{16}{x}

Use the equation above to find y when x=2:

\begin{gathered} y=\frac{16}{2} \\  \\ y=8 \end{gathered}Then, when x=2, y=8
You might be interested in
A car uses 10litres of fuel for a journey of 40km on the average.What distance will 25litres cover with the same car and speed?​
Vadim26 [7]

Answer:

By unitary method

40/10 = 4km / litre

So,

4*25 = 100 km

The car covers 100km with 25 litres of fuel

Hope this helps

Please mark me as the brainliest

Thank you

4 0
3 years ago
Given f(x) = -x – 4, find f(4).<br> I need help
Brums [2.3K]

Answer:

f(4) = -8

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = -x - 4

f(4) is x = 4

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                  f(4) = -4 - 4
  2. Subtract:                            f(4) = -8
5 0
3 years ago
Item 1
Nady [450]

9514 1404 393

Answer:

  ∠1 = ∠3 = ∠5 = ∠7 = 81°

  ∠2 = ∠4 = ∠6 = 99°

Step-by-step explanation:

Vertical and corresponding angles are congruent. Angles 1 and 99° are supplementary, so ...

  ∠1 = 180° -99° = 81°

Then we have ...

  ∠1 = ∠3 = ∠5 = ∠7 = 81°

  ∠2 = ∠4 = ∠6 = 99°

3 0
3 years ago
3 + (-2)<br><br> pls tell me answer and how to solve it
svet-max [94.6K]

Answer:

3 + (-2)

= 3 - 2

= 1

hope this helps

5 0
3 years ago
6) Mrs. Hesabu has taken a loan of sh. 400,000 from Sweet
PIT_PIT [208]

Answer:

Step-by-step explanation:

If she was given a discount of 12% then the amount to be paid becomes I=P×R×T/100

I=400000×12×20/100

I=960000

Amount to be paid =I +P= 960000+400000=1360000

To liquidate this amount in 20 years therefore will be A÷20

1360000÷20

=68000 yearly

6 0
4 years ago
Other questions:
  • Find the value of x.
    5·1 answer
  • A right triangle has a 30 degree angle. the leg adjacent to the 30 degree angle measures 25 inches what is the inches. What is t
    13·1 answer
  • .solve please and thank you
    7·2 answers
  • What’s the least common multiple of x^2-2x-15 and x^2+2x-3?
    9·1 answer
  • Productivity increases under which of these scenarios? a. inputs and outputs increase proportionately b. outputs decrease while
    13·1 answer
  • Which of the following expressions is not correctly written in scientific notation?
    11·1 answer
  • *
    6·1 answer
  • Tell whether the ordered pair is a solution of the given system.
    15·2 answers
  • How many pieces of jewelry could she buy?
    12·2 answers
  • Which of the following equations is an example of inverse variation?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!