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
aliina [53]
3 years ago
5

If z varies jointly with x and y, x = 2 and y = 2, z = 7. Find z when x = 4 and y = 8.

Mathematics
1 answer:
Wittaler [7]3 years ago
7 0

Answer:

56

Step-by-step explanation:

z varies jointly with x and y:

z = kxy

When x = 2 and y = 2, z = 7.

7 = k(2)(2)

k = 7/4

z = 7/4 xy

When x = 4 and y = 8:

z = 7/4 (4)(8)

z = 56

You might be interested in
Given P equals $11260, T equals six years, and R equals 7.5% compounded weekly. Use the correct compound interest formula to cal
Dmitrij [34]

We would apply the formula for determining compound interest which is expressed as

A = P(1 + r/n)^nt

where

A = total amount in the account at the end of t years

r represents the interest rate

n represents the periodic interval at which it was compounded

p represents the principal or initial amount deposited

From the information given,

P = 11260

t = 6

r = 7.5/100 = 0.075

n = 52(Assuming the number of weeks in a year is 52 and it would be compounded 52 times in a year)

Thus, we have

A = 11260(1 + 0.075/52)^52*6

A = 11260(1 + 0.075/52)^312

A = 17653.5

3 0
1 year ago
Find the first partial derivatives of the function. f(x, y) = ax + by/ cx + dy
Marina86 [1]
<span>The partial derivative of the given function with respect to x is a - by/cx2 + dy/dx In this derivative the terms in the with x is only considered other or treated as constant The partial derivative of the given function with respect to y is b/cx+ d2y/dx. In this derivative the terms in the with x is only considered other or treated as constant</span>
5 0
3 years ago
How do I solve this finding the first four of the sequence?
Gemiola [76]

Answer:

300,350,400,450

Step-by-step explanation:

the formula for any n term is:

tn=a1+(n-1)d

t1= 300+(1-1)d=300

t2= 300+(2-1)50= 350

t3= 300+(3-1)50= 400

t4= 300+(4-1)50 = 450

and so on...

5 0
3 years ago
James designed a game of chance which involves identical balls numbered from 1 to 50. He selected 5 balls at random and found th
Bad White [126]

It ......... is .......... 38 .........

3 0
2 years ago
Which graph represents the function f(x))=2•(1/3)^x
prisoha [69]

Answer:

The one in the right top hand corner. It shows one arrow pointing up and one to the right.

Step-by-step explanation:

I can't really explain it.

5 0
2 years ago
Other questions:
  • Explain how you know which coins could be used to show 0.77 of a dollar
    5·1 answer
  • I need help thank you
    11·1 answer
  • PLZ HELP ME FAST! Given that ∠MQL = 180° and ∠XQR = 180°, which equation could be used to solve problems involving the relations
    13·2 answers
  • X/2+x/3=3/4<br> Solve for x
    6·1 answer
  • What is the range of this function?
    15·1 answer
  • I need to know how to solve this for ixl homework
    8·1 answer
  • When 3/11 is written as a repeating decimal,which digits are repeating
    14·2 answers
  • Which of the following are identities?
    15·2 answers
  • What is the value of the missing angle (x+15)
    6·1 answer
  • Агенция за недвижими имоти установява, че търсенето на квартири под наем в град “Х”се описва с уравнението Qd = 1000-5P, а предл
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!