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
Rudiy27
3 years ago
11

The quantity y varies directly as x and inversely as z. When x is 10 and z is 4, y is 15. What is y when x is 20 and z is 6?

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
Y=(kx)/z


15=(k10)/4
15=(5k/2)
15=k(5/2)
ties both sides by 2/5 to clear fraction
6=k

y=(6x)/z

x=20
z=6
y=(6*20)/6
y=20
You might be interested in
What is the slope of the line passing thru the points (-6,-5) (4,4)
Katena32 [7]

Answer:

slope = \frac{9}{10}

Step-by-step explanation:

Calculate the slope m using the slope formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (- 6, - 5) and (x₂, y₂ ) = (4, 4)

m= \frac{4+5}{4+6} = \frac{9}{10}

8 0
3 years ago
1/3 of the viewers opening rated the movie as goo and very good. 35 people rated it good and 20 people rated it very good. what
mylen [45]
Since a total of 55 people rated it good/very good, we know that 1/3 of the viewers are 55 people. So we can set the equation: 1/3x=55

Now, just multiply both sides by 3 (or divide by 1/3, same thing) and get your answer! 
4 0
3 years ago
Which table shows a proportional relationship between miles traveled and gas used?
Mashutka [201]

Answer:

I cant answer this question since there is no table or graph

8 0
3 years ago
Whats the answer to the problem Pls
choli [55]

Answer:

j=42

Step-by-step explanation:

since it's 7x larger you just have to multiple 6 by 7 to find j

6 0
2 years ago
Read 2 more answers
Find tan(450-a), If <br><img src="https://tex.z-dn.net/?f=%20%5Ctan%28a%29%20%3D%20%20%5Cfrac%7B1%7D%7B2%7D%20" id="TexFormula1"
Inessa05 [86]

Answer:

tan(450-a)=5\sqrt{3}-8

Step-by-step explanation:

We know that:

tan(a-b)=\frac{tan(a)-tan(b)}{1+tan(a)tan(b)}

tan(450-a)=\frac{tan(450)-tan(a)}{1+tan(450)tan(a)}

Remember:

450°=360°+60°

and:

tan(a)=\frac{1}{2}

Thus:

tan(450-a)=\frac{tan(60)-tan(a)}{1+tan(60)tan(a)}\\\\

Then:

tan(450-a)=5\sqrt{3}-8

4 0
2 years ago
Other questions:
  • math word question. rochelle is baking cookies and is using 2/3 cup of white sugar and 1/4 cup of brown sugar. what is the diffe
    13·1 answer
  • Change each percent to a decimal or a mixed decimal<br> 43%<br>2 1/2%<br>13.6%<br>521%
    11·1 answer
  • help pleas-D'quan's grandmother made a quilt for his bed the quilt is 2.44 meters long and 1.83 meters wide what is the area of
    7·1 answer
  • A small start-up company with 16 employees will select its 4 board members from among the employees. How many different groups o
    5·1 answer
  • the singh and robinson families planned a trip to busch gardens. they needed to buy one ticket per person and then pay for parki
    8·1 answer
  • if it takes four men to dig a land in 6 days.how many days will it take 6 men to build that same land.​
    11·2 answers
  • The sum of 7+14+21 + 150 terms​
    11·1 answer
  • A clothing company buys t-shirts for $10 and sells them for $100. What is the percentage mark up on
    10·1 answer
  • PLEASE HELP
    15·1 answer
  • Determine whether the following pairs of lines are parallel, perpendicular, or neither. y=1/3x+4 3x+y=2​
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!