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
Anvisha [2.4K]
3 years ago
13

he variable z is directly proportional to x, and inversely proportional to y. When x is 7 and y is 7, z has the value 2. What is

the value of z when x=10, and y=12?
Mathematics
1 answer:
Alexxx [7]3 years ago
3 0

z \alpha  \frac{x}{y}
z =  \frac{kx}{y}
Case 1:
But, x=7, y=7 and z=2
From;
z =  \frac{kx}{y}
2 =  \frac{k7}{7}
2 \times 7 = 7k
14 = 7k
k =  \frac{14}{7}
k = 2
Therefore;
From;
z =  \frac{kx}{y}
z =  \frac{2x}{y}
Case 2:
z=?, x=10, y=12
From;
z =  \frac{2x}{y}
z =  \frac{2(10)}{12}
z =  \frac{20}{12}
Therefore;
z =  \frac{5}{3}








You might be interested in
Use the grouping method to factor the polynomial below completely.<br> x - 3x² + 5x - 157
Levart [38]

Answer:

-3x^2+6x-157

Step-by-step explanation:

8 0
4 years ago
Simplify radical 16v16
Andreas93 [3]

Answer:

64

Step-by-step explanation:

4 0
4 years ago
A company makes a greenhouse that is shaped like a rectangular prism on bottom and a half cylinder on top.
Firdavs [7]

Answer: 86m cubed

Step-by-step explanation:

7 0
3 years ago
Is this a statistical question?<br> "How tall is a palm tree"
alexira [117]

Answer:

yes it is a statistical question

7 0
2 years ago
Is 4/6 greater than or less than 6/10
erica [24]
Yes, 4\6 is greater than 6\10 because if you change them they will have a common denominator.
6 0
4 years ago
Read 2 more answers
Other questions:
  • A youth Basketball has a standard Circumference of 27 inches. An NBA standard ball is 29.5 inches.
    10·1 answer
  • pls help me with this if you know it also to explain it thanks Solve the equation -21 + 70n = 77 for n.
    10·1 answer
  • students are selling tickets to a scool fundraiser for every 15 tickets a student sells a student earns a T-shirt as a reward wh
    8·1 answer
  • The side of a square is 12ft what is the area of the square
    10·1 answer
  • A chocolate lab puppy weighs 4.4 pounds. Fully grown, a chocolate
    8·1 answer
  • 6/1 times 8/3 (reduced)
    13·1 answer
  • An engineer, in an attempt to make a quick measurement, walks 100 ft from the base of an overpass
    12·1 answer
  • What is the greatest measure of the given data?
    9·1 answer
  • Bill is selling stickers to raise money for a charity. He sold 36 stickers on the first day and 23 on the second day. He had 26
    10·2 answers
  • What is the maximum number of interior reflex angles that a hexagon can have?​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!