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
blagie [28]
3 years ago
6

The variable Z is directly proportional to X, and inversely proportional to Y. When X is 10 and Y is 4, Z has the value 47.5.

Mathematics
1 answer:
andrezito [222]3 years ago
7 0
Because Z is directly proportional to X and inversely proportional to Y, therefore
Z=k( \frac{X}{Y}),\\k=constant

When X=10 and Y=4, Z=47.5.
Therefore
k(10/4) = 47.5
   2.5k = 47.5
        k = 19.

That is,
Z= \frac{19X}{Y}

When X=13 and Y=10, obtain
Z = (19*13)/10 = 24.7

Answer: 24.7
You might be interested in
Samara ate 1/3 of a pizza and Vyolet ate 1/5 of the pizza. How much of the pizza did they eat in all?
jeka57 [31]
All together, the two girls ate 8/15 of a pizza. you mulitply your fractions out of equal denominaters and get that.
7 0
3 years ago
An experimenter is studying the effects of temperature, pressure, and type of catalyst on yield from a certain chemical reaction
irga5000 [103]

Answer:

90

12

0.0154

Step-by-step explanation:

a) #Possible experimental run=#Temp x #pres x #cat=3x5x6=90

b) #Possible experimental run=(Temp. lowest) x 2.pres x #cat=1x2x6=12

c) C="different catalyst is used on each run"

In the first, I can choice 6 of 6 catalysts, in the second 5 of 6,...

then: P(C) = 6/6 x 5/6 x 4/6 x 3/6 x 2/6 x 1/6 = 5/324 = 0.0154

3 0
3 years ago
Magizen cost 1.50 magizen cost 2 each cost for you and friend 10.50
ludmilkaskok [199]

basicly it is addition add 50 cent 4 times then add the dolars to that witch will get you to 6.00 bucks add the taxes witch is 5 bucks and 50 cent so 10.50 is your ansewer

8 0
3 years ago
1. Jin fills up a 510-gallon pool in the backyard for her children. She fills it with the garden hose at a rate of 17 gallons pe
marta [7]
Sorry couldn’t answer
5 0
3 years ago
A family needs to cross a river in a small raft.
serg [7]

Answer:

so basically you can take more than one trip you can take the mother and the bag at the same time

Step-by-step explanation:

and then you can get the daughter in the son at the same time and then for the final trip you take the father by himself

8 0
2 years ago
Other questions:
  • Find the area of the irregular figure in the diagram.
    13·2 answers
  • The bookstore marked some notepads down from ​$3.00 but still kept the price over ​$2.00. it sold all of them. the total amount
    13·2 answers
  • How do I solve this problem
    9·1 answer
  • At a math competition two students can answer 40 questions in one hour at the same rate how many questions can five students ans
    7·1 answer
  • 3 3/4 divided by 5/7
    9·2 answers
  • Super pressure <br> I need help
    11·1 answer
  • The quotient of a number and 5 is 10
    12·2 answers
  • Which statement best describes the data on the scatter plot?
    9·2 answers
  • 1. What units cannot be used to measure weight?<br> A. ton<br> O B. inch<br> O C. pound<br> D. ounce
    7·2 answers
  • Acellus
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!