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
timofeeve [1]
3 years ago
15

If x varies inversely as y, and x = 7 when y=3, find y when x = 9.

Mathematics
2 answers:
RSB [31]3 years ago
5 0

Step-by-step explanation:

x=k/y------(1)

k=xy

k= 7×3

k=21

from equation 1

x=k/y

y=k/x

y=21/9

y = 2.33

Liono4ka [1.6K]3 years ago
5 0

Answer:

3.85714285714

Step-by-step explanation:

7 = 3

9 = y

9*3=27

27/7 = 3.85714285714

You might be interested in
Which statement best illustrates using the vertical line test to determine if the graph below is a function of x ?
kirill115 [55]

If something is a function, every x-value, only has one (1) y-value. If the line x = 0 intersects the graph in two points, there are to values for y (instead of one). Therefore the graph is not a function of x.


Your answer is A.


4 0
3 years ago
Read 2 more answers
Write each rate as a unit rate. $2 for 5 cans of soup.
Len [333]
If you would like to write each rate as a unit rate, you can do this using the following steps:

$2 ... 5 cans of a soup
$1 ... x cans of a soup = ? 

2 * x = 5 * 1
2 * x = 5
x = 5 / 2
x = 2.5 cans of a soup per $1

$2 ... 5 cans of a soup
$x = ? ... 1 can of a soup

2 * 1 = 5 * x
2 = 5 * x
x = 2 / 5 
x = $0.4 per 1 can of a soup
6 0
3 years ago
Make r the subject of the formula <br><img src="https://tex.z-dn.net/?f=v%20%3D%20%5Cpi%20%5C%3A%20h%20%7B%7D%5E%7B2%7D%28r%20-%
Vaselesa [24]

Answer:

\boxed{r =  \frac{h}{3}  +  \frac{v}{\pi {h}^{2} } }

Step-by-step explanation:

Solve \:  for \:  r:  \\  =  >   v= \pi {h}^{2}(r -  \frac{h}{3}  ) \\  \\  v=\pi {h}^{2}(r -  \frac{h}{3}  )is \:  equivalent  \: to   \:   {h}^{2}\pi(r -  \frac{h}{3}  ) = v: \\  =  >  {h}^{2}\pi(r -  \frac{h}{3}  ) = v \\  \\ Divide  \: both \:  sides  \: by  \: \pi  {h}^{2} :  \\  =  > r -  \frac{h}{3}  =  \frac{v}{\pi {h}^{2} }  \\  \\ Add \:   \frac{h}{3}  \:  to  \: both \:  sides:  \\  =  > r =  \frac{h}{3}  +  \frac{v}{\pi {h}^{2} }

8 0
3 years ago
1
aleksley [76]

Answer:

Whelan

Step-by-step explanation:

stone duck twice is jacky tabby each dvi runs rgb us esc hoc TLC rig TJ DJ gabi FCC fold EU

6 0
3 years ago
Out of 18 cookies 2/3 are chocolate chips how many of the cookies are chocolate chips
Wewaii [24]
Twelve cookies are chocolate chip
3 0
3 years ago
Read 2 more answers
Other questions:
  • How to write a story context that would be represented by the ratio 1:4
    5·1 answer
  • A man drove x miles per hour for 3 hours and (2x-60) miles per hour for the next 4.75 hours. A)Express the total distance travel
    12·1 answer
  • Please help me it's due tomorrow
    14·1 answer
  • How could you use the Distributive Property to rewrite the expression −(8 + 12)?
    12·1 answer
  • 2 milliliters in one week
    14·1 answer
  • Please help ASAP<br> I will give brainliest if you answer right
    6·2 answers
  • Simplify: Write your answer in scientific notation.<br> (3.3 x 10^7) + (7.7 x 10^8)
    8·1 answer
  • Help i will give brainliest
    13·1 answer
  • If the sum of the angles at a point is (2y + 60°), find the value of y
    8·1 answer
  • Answer this for 20 points
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!