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
sdas [7]
3 years ago
5

. If y varies directly with x when y = -4 and x = 10, determine y when x = 2. Write and equation for the direct variation and de

termine the value.
Mathematics
1 answer:
taurus [48]3 years ago
7 0

Answer:

y = - 0.8

Step-by-step explanation:

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

y = kx ← k is the constant of variation

To find k use the condition when y = - 4, x = 10, then

- 4 = 10k ( divide both sides by 10 )

- 0.4 = k

y = - 0.4x ← equation of variation

When x = 2 , then

y = - 0.4 × 2 = - 0.8

You might be interested in
Solve this system of equations- x=2y-8 and 4x+y=13
rjkz [21]
(2,5)
thats what i got

8 0
3 years ago
Read 2 more answers
What are the steps for using a compass and straightedge to construct a square?
aniked [119]

Answer:

Ooof

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Solve each solution. Check your solution. -32 = -4b
statuscvo [17]
You need to divide-4 on both sides which will get you 8.hope this helps
7 0
3 years ago
Read 2 more answers
3) solve for x. −1/2(x 2) 11/2 x=3
Travka [436]
-1/2(x + 2) + 11/2 + x = 3
-1/2x - 1 + 11/2 + x = 3
1/2x + 9/2 = 3
1/2x = 3 - 9/2 = -3/2
x = -3/2 * 2 = -3
x = -3
3 0
3 years ago
A house is 46.0 ft long and 50 ft wide, and has 8.0-ft-high ceilings. what is the volume of the interior of the house in cubic m
I am Lyosha [343]
Volume of house = 46*50*8=18400 ft^3
Each foot equals 0.3048 m. (exactly).
Therefore 1 ft^3 = 0.3048^3 m^3
Therefore volume of the interior of the house 
= 18400 ft^3 * .3048^3 m^3/ft^3
=18400*.3048^3 m^3
=521.0299772928 m^3
=521 m^3 (nearest m^3) ................(a)
or, in cubic centimeters
=521 m^3 * (100cm/m)^3
=521.0299772928 * 100^3 cm^3
=521029977.2928 cm^3
=521029977 cm^3  (nearest cm^3) .........(b)

Answer: see (a) and (b).
4 0
2 years ago
Other questions:
  • Can you help plz I don’t have much time?!!!
    13·1 answer
  • Please help!<br> 4x(5y-x)-5y(4x-y)
    13·2 answers
  • An angle measuring 3.6 radians is drawn in standard position?
    6·1 answer
  • Lucy works at an electronics store as a salesperson. Lucy earns a 6% commission on the total dollar amount of all phone sales sh
    6·1 answer
  • Write the standard equation of the circle in the graph. Picture included.
    13·1 answer
  • Perform the indicated operations. Do the root of -48 in terms of i please
    8·1 answer
  • Item 2
    10·1 answer
  • *PLEASE HELP* I NEED TO FINISH THIS IN 30 MINUTES (I’ll give brainlist)
    11·2 answers
  • The temperature at 5 PM was -4 degrees. By 5 AM the temperature had decreased 8 degrees. What was the temperature at 5 AM?
    14·1 answer
  • A right angled triangle has sides 12m and 5 m.what is the length of the hypotenuses of this triangle?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!