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
amid [387]
3 years ago
7

Find an equation of variation where y varies directly as x and y = 0.8 when x = 0.4

Mathematics
1 answer:
GrogVix [38]3 years ago
7 0

Answer:

y = 2x

Step-by-step explanation:

Given that y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 0.8 when x = 0.4

k = \frac{y}{x} = \frac{0.8}{0.4} = 2

y = 2x ← equation of variation

You might be interested in
Simplify the expression given below.
trasher [3.6K]

Answer:

A) 1/(3x+1)

Step-by-step explanation:

(x+2)/(x³+2x²-9x-18)÷(3x+1)/(x²-9)

(x+2)/(x+2)(x+3)(x-3)÷(3x+1)/(x+3)(x-3)

since it’s dividing by a fraction, invert and multiply

(x+2)/(x+2)(x+3)(x-3) times (x+3)(x-3)/(3x+1)

The (x+2)’s cancel out.

The (x+3)’s cancel out.

The (x-3)’s cancel out.

You are left with 1/(3x+1)

5 0
3 years ago
What additional information is needed to prove the following triangles congruent by ASA?
lianna [129]

Answer:

angle B = angle C

Step-by-step explanation:

______________

7 0
3 years ago
Read 2 more answers
Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
prohojiy [21]

Answer:

2.25

Step-by-step explanation:

(6x^{-2})^2(0.5x)^4\\\\=(6^2(x^{-2})^{2})(0.5^4x^4)\ \ \ \ \ \ \ \ \ \ \ \ \ as\ (ab)^m=a^mb^m\\\\=36\times 0.5^4((x^{-2})^2x^4)\ \ \ \ \ \ \ \ \ \ as\ multiplication\ is\ associative\ a(bc)=(ab)c\\\\=36\times 0.0625(x^{-4}x^4)\ \ \ \ \ \ \ \ \ \ \ as\ (x^m)^n=x^{mn}\\\\=(36\times 0.0625)(x^{-4+4})\ \ \ \ \ \ \ \ \ \ \ as\ x^mx^n=x^{m+n}\\\\=2.25x^0\\\\=2.25\ \ \ \ \ \ \ \ \ \ \ \ as\ x^0=1\\\\(6x^{-2})^2(0.5x)^4=2.25

7 0
3 years ago
A square with side lengths of 3x + 3. An equilateral triangle with side lengths of 5 x + 0.5. The perimeters of the square and t
aleksklad [387]

Answer:

1) 4(3x+3)=3(5x+0.5)

2) 3.5

3) 54 units

4 0
3 years ago
Read 2 more answers
Which of the following fractions is equal to a repeating decimal
kiruha [24]

Answer: There are no fractions listed, so I can't help you. 1/3 is a repeating though, if that helps anything. Otherwise, you could use a calculator and just find the decimal of the fraction.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Plz help!!!!
    7·1 answer
  • SHOW STEPS PLEASE!!!
    9·1 answer
  • Round 16.4 to the nearest whole number
    8·2 answers
  • Study lamps are packed 2 in a carton. The dimensions of the carton are 2.5 feet by 1.25 feet by
    8·1 answer
  • If a man is driving at a rate of 80 km per hour, how many kilometers will he travel in 30 minutes? A. 30 km B. 40 km C. 60 km D.
    5·1 answer
  • Could someone please help me out
    13·1 answer
  • Suppose that the weight (in kilograms) of an airplane is a linear function of the amount of fuel (in liters) in its tank. When c
    5·1 answer
  • The diagram shows a rectangle.
    15·2 answers
  • Complete the table by cubing each positive x-value.x
    10·1 answer
  • Help as soon as possible!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!