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
postnew [5]
3 years ago
12

If y is 5 when x is 2.5 and y varies directly with x, find y when x is 10

Mathematics
2 answers:
ikadub [295]3 years ago
8 0

Answer:

If x varies directly as y, then x=ky. y=5 and x=2.5 are substituted into x=ky to find k.

2.5=5k

k=2.5/5

k=5.

K =5 is substituted in x=ky to find y where x is 10.

x=5y

10=5y

y=10/2

y=2

ICE Princess25 [194]3 years ago
6 0

Answer:  The required value of y is 20.

Step-by-step explanation:  Given that y is 5 when x is 2.5 and y varies directly with x.

We are to find the value of y when x is 10.

According to the given information, we can write

y\propto x\\\\\Rightarrow y=kx~~~~~~~~~~[\textup{where k is the constant of proportionality}]

When y = 5 and x = 2.5, then we have

5=k\times2.5\\\\\Rightarrow k=\dfrac{5}{2.5}\\\\\Rightarrow k=2.

So, we get

y=2x.

Therefore, when x = 10, then the value of y is

y=2\times10=20.

Thus, the required value of y is 20.

You might be interested in
PLEASE HELP ME!!! WOULD MEAN ALOT
Alex17521 [72]

Answer:

- 18-24x

Step-by-step explanation:

pls give brainly if its correct

7 0
3 years ago
Read 2 more answers
allen is mixing red and yellow paint to make two different shades of orange. to make 1 cup of dark orange paint he needs 7 ounce
slavikrds [6]

Answer:

42 ounces of yellow paint.

Step-by-step explanation:

  • To make three cups of dark orange, you just need to remember that to make one cup you need: 7 ounces of red paint and 1 ounce of yellow paint. Then, to make three cups, we just have to multiply these proportions by three,which means 7x3 ounces of red paint =21 ounces of red paint, plus 3x1 ounces of yellow paint =3 ounces of yellow paint. Then we need 21 ounces of red paint and 3 of yellow paint to make three cups of dark orange.
  • To make one cup of light orange, we need 13 ounces of yellow paint, and 3 ounces of red paint. Then, to make three cups, we just multiply this proportion by 3, as follows: 13x3 ounces of yellow paint = 39; and 3x3 ounces of red paint =9.  Then we need 9 ounces of red paint and 39 of yellow paint to make three cups of light orange.
  • Adding up the amount of ounces we need to make dark orange and light orange, we get a total amount of 21+9=30 ounces of red paint and 3+39=42 ounces of yellow paint to make three cups of light orange and three cups of dark orange.
7 0
3 years ago
I need help with graphing​
Usimov [2.4K]
Are you finding the x-intercept
7 0
3 years ago
HURRY IM TAKING A TEST!!!!!!!! Which table of ordered pairs represents a proportional relationship?
SashulF [63]

Answer:

D

Step-by-step explanation:

They are all multiplied by 3 which is proportional

4 0
3 years ago
help please: A 15 foot long section beam weighs 3,520 pounds. What is the weight of a 3 foot long section of the beam?
yuradex [85]

Answer:

704 pound's

Step-by-step explanation:

What I did was divided 15 by the 3 and then I got 5 which I divided 3520 pound's by 5 which equals 704 pounds. Hope this helps.

5 0
3 years ago
Other questions:
  • A shirt is marked down 20% off the original price. If the original price was $24.00, what is the sale price of the shirt before
    13·2 answers
  • Is 5x +4 equivalent to 5(x-1) +9
    8·1 answer
  • The value of two numbers if their sum is 21 and their difference is 3
    8·2 answers
  • Im stuck help me pls thank you
    5·1 answer
  • Please help me with this D:
    11·1 answer
  • If a radioactive isotope has a half-life of 6 hours and 12 milligrams is initially present, how much will
    9·1 answer
  • Tres hermanos van a repartirse un pastel y medio, cuanto le toco de pastel a cada uno de los hermnos
    7·1 answer
  • What are 19 and 23 hundredths in standard form
    8·1 answer
  • How do I do number 7 I wasn’t taught this
    15·1 answer
  • Help with exercise
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!