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
zysi [14]
3 years ago
5

Find an equation of variation where y varies jointly as x and the square of z, and where y=70, when x=21 and z=5.

Mathematics
1 answer:
Bezzdna [24]3 years ago
4 0

Answer:

y = 181.75xz^2

Step-by-step explanation:

Given

y jointly varies to x and z^2

Required

Find the equation

We start by writing out the variation;

y\ \alpha\ xz^2

Write as equation

y = kxz^2

Substitute values of x,y and z

70 = k * 21 * 25^2

70 = k * 21 * 25 * 25

70 = k * 13125

Divide both sides by 7

\frac{70}{13125} = \frac{k * 131251}{13125}

\frac{70}{13125} = k

187.5 = k

k = 181.75

Substitute k in y = kxz^2

y = 181.75xz^2

You might be interested in
2.(03.01 LC)
ale4655 [162]
592,722 is the correct answer
3 0
3 years ago
Read 2 more answers
Please help asap 30 pts
Sergio [31]

4w-2(1-w)=-38\qquad|\text{use distributive property}\\\\4w+(-2)(1)+(-2)(-w)=-38\\\\4w-2+2w=-38\qquad|\text{add 2 to both sides}\\\\4w+2w=-36\\\\6w=-36\qquad|\text{divide both sides by 6}\\\\\boxed{w=-6}

<h3>Answer: d. w = -6</h3>
4 0
3 years ago
Find the value of x. If necessary, round to the nearest tenth.
Oksi-84 [34.3K]

Answer:

the answer is 7 i believe

4 0
3 years ago
What is the slope <br> (-3,1) (4,5)
myrzilka [38]
The slope in short is:
4/7
7 0
3 years ago
Read 2 more answers
What is 4 multiplied by 5 7/9 as a mixed number or fraction
Andrei [34K]
The answer is 23 and 1÷9

First you multiply 4 by 5 and wind up with 20
Then you multiply four by 7÷9.
That gets you 28÷9
You take out all the nines you can from 28, three in this case.
That gets you 27÷9 + 1÷9
Your total thing is 20+27÷9+1÷9
That equals 20+3+1÷9
That equals 23 and 1÷9
8 0
3 years ago
Other questions:
  • Geometry math question no Guessing and Please show work
    8·2 answers
  • Match the corresponding function formula with each function when h(x) = 3x + 2 and g(x) = 2 x .
    5·2 answers
  • Which function is a quadratic function
    9·1 answer
  • Directions: Solve the following problems and reduce all answers to simplest forms.
    5·1 answer
  • What is the solution of 7k+2=4k-10?
    15·1 answer
  • How do you tell someone you like them if you get nervous around them?
    9·1 answer
  • I've done everything I can, I cant figure this out pls help asap
    14·1 answer
  • Your family wants to purchase a new laptop with
    13·1 answer
  • What is the sum of 5.439 + 3.200
    9·1 answer
  • the coordinates of the vertex of a parabola in the xy-plane are (-4,k). If the y-intercept of the parabola is 12 and the parabol
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!