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
NikAS [45]
3 years ago
5

If the value of "Y" varies directly with "X" and y=-8,when x=20,find "Y"if x=-4

Mathematics
1 answer:
kherson [118]3 years ago
6 0

Answer:

y is 8/5 when x = -4.

Step-by-step explanation:

If the value of "Y" varies directly with "X", we can write y = kx, where k is the constant of proportionality.

If "y=-8,when x=20," then we can find k:    -8 = 20k, or k = -2/5.

Then y = (-2/5)x.

If x = -4, then y = (-2/5)(-4) = 8/5

y is 8/5 when x = -4.

You might be interested in
The ratio of two numbers is 4:5 if the larger number is 300 what is the smaller number​
yaroslaw [1]

Answer:

The smaller number is 240.

Step-by-step explanation:

The question says that the larger number is 300, so 5 has to be 300.

4:5

?:300

You can use cross-multiplication or find the scale factor to find the answer.

Cross-multiplication:

4 × 300 ÷ 5 = 240

Finding the scale factor:

300 ÷ 5 = 60

4 × 60 = 240

The smaller number is 240.

6 0
2 years ago
PLEASE HELP! I WILL GIVE BRAINLIEST! PLEASE SHOW YOUR WORK TOO :))!!
Juliette [100K]

Answer:>

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Lacie wants to paint her bedroom walls. She gas to cover 1,165.5 square feet. About how many gallons of paint will she need? Gal
DanielleElmas [232]

Answer:

1. 4.66 gallons 2. 2.33 gallons 3. 1.55 gallons

Step-by-step explanation:

1. If her gallons cover is 250 square feet, the number of gallons of paint Lacie would need to cover 1,165.5 square feet of bedroom walls is

1,165.5/250 = 4.66 gallons

2. If her gallons cover is 500 square feet, the number of gallons of paint Lacie would need to cover 1,165.5 square feet of bedroom walls is

1,165.5/500 = 2.33 gallons

3. If her gallons cover is 750 square feet, the number of gallons of paint Lacie would need to cover 1,165.5 square feet of bedroom walls is

1,165.5/750 = 1.55 gallons

4 0
3 years ago
Write the fraction in simple form 6/12
Mila [183]

Answer:

1/2

Step-by-step explanation:

6 is half of 12 so it would simplify to 1/2

5 0
3 years ago
Read 2 more answers
bobby hopes that he will some day be more than 70 inches tall. he is currently 61 inches tall how many inches , x , does bobby n
leonid [27]
10 inches would make him taller than 70, 9 inches would make him exactly 70
7 0
3 years ago
Other questions:
  • Can someone help me with my homework please?
    15·1 answer
  • W(x)=5^x odd or even
    6·2 answers
  • Slopes of parallel and perpendicular lines
    8·1 answer
  • Cerebral $500 for four years at 3% interest compounded annually use the formula to calculate the total amount she will have to p
    6·1 answer
  • Simplify completely (6x² - 54x + 84 / 8x² -40 x +48) ÷ (x² + x - 56 / 2x² + 12x -32)
    9·1 answer
  • What is the solution to 2log9(x)=log^9(8)+log9(x-2)
    13·2 answers
  • Watch ordered pair is not a point on the graph of y= -5x + 2?
    12·1 answer
  • Please help with my school
    13·1 answer
  • The length of two sides of a triangle are 10, 15 find the range of possible lengths for the third side
    10·1 answer
  • Good afternoon can someone please helppp :))))
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!