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
Dimas [21]
3 years ago
14

Solve for K, the constant of variation, in a joint variation problem where y=520, x=5, z=6.5. Solution is?

Mathematics
1 answer:
Luden [163]3 years ago
6 0

Answer:

K = 676

Step-by-step explanation:

When y is directly proportional to x and inversely poportional to z

We have

y = kx/z

When y =520

x = 5

z = 6.5

K =?

We have

520 = k x 5/6.5

Cross multiply

520 x 6.5 = 5k

3380 = 5k

Divide both sides by 5

3380/5 = 5k/5

676 = k

k = 676

You might be interested in
Help me please, please help
Sergio [31]

Answer:

Heyo. The answer is 60.48

Step-by-step explanation:

This is pretty easy, all you have to do is multiply the length, height, and width. Remember this. LxHxW. Thats is the formula. You do 4.2 cm, multiplied by 3.2 cm, then multiply that by 4.5 cm. Hope this helps! :)

8 0
3 years ago
11<br> El prisma tiene 9 caras, 9 aristas y 6 vertices.<br> (2 puntos)<br> Cierto<br> Falso<br> 1
Levart [38]
Hi! I don’t know what any of this means but I hope you have an amazing day and I hope god/allah/etc. blesses you :)
sorry I couldn’t answer
4 0
3 years ago
At a garage sale books cost $1.50 each and musical
Novosadov [1.4K]

Answer:

$16

Step-by-step explanation:

4 books would cost $6 and 5 tapes would be $10. Add them to get 16.

8 0
3 years ago
Read 2 more answers
The point P(5, −4) lies on the curve y = 4/(4 − x).
dalvyx [7]

Answer:

4

Step-by-step explanation:

Slope refers to the steepness of the line.

Slope is equal to change in value of y divided by change in value of x.

The slope of the secant line is given by \frac{f(x)-f(a)}{x-a}.

Given points are P\left ( 5,-4 \right )\,,\,Q\left ( x,\frac{4}{4-x} \right )

So, slope of the secant line is \frac{\frac{4}{4-x}+4}{x-5}=\frac{4+4(4-x)}{(x-5)(4-x)}=\frac{20-4x}{(x-5)(4-x)}=\frac{-4(x-5)}{(x-5)(4-x)}=\frac{-4}{4-x}=\frac{4}{x-4}

(i) At x = 4.9,

\frac{4}{4.9-4}=\frac{4}{0.9}=4.444444

(ii) At x = 4.99,

\frac{4}{4.99-4}=\frac{4}{0.99}=4.040404

(iii) At x = 4.999,

\frac{4}{4.999-4}=\frac{4}{0.999}=4.004004

(iv) At x = 4.9999,

\frac{4}{4.9999-4}=\frac{4}{0.9999}=4.0004

(v) At x =5.1,

\frac{4}{5.1-4}=\frac{4}{1.1}=3.636364

(vi)

At x = 5.01,

\frac{4}{5.01-4}=\frac{4}{1.01}=3.960396

(vii) At x = 5.001,

\frac{4}{5.001-4}=\frac{4}{1.001}=3.996004

(viii) At x = 5.0001,

\frac{4}{5.0001-4}=\frac{4}{1.0001}=3.9996

(b)

Slope of the tangent line is 4.

5 0
3 years ago
Frank’s quarter grades are 82.5, 94.7, and 87.9. What grade, rounded to the nearest percent, will Frank have to earn in the last
yanalaym [24]
He would have to atleast get a A:89% because 82.5+94.7+87.9+89=354.1/4=88.525=89% (rounded to the nearest percent) to find this just take 82.5+94.7+87.9+x=xx/4=atleast 89% mainly it just is guess and check to find this. Hope this helps!=)
5 0
3 years ago
Other questions:
  • Simplify the following and express in the form a+bi.<br><br> (-8-i)(-8+i)
    6·1 answer
  • A ray runs forever in _______ directions.<br> a. one <br> b.two <br> c.three<br> d.four
    12·2 answers
  • Evaluate (4.0x10^5)(7.0x10^7)
    9·1 answer
  • Help??<br> How would I solve this to get my answer? Help please
    10·1 answer
  • What two numbers multiply to -52 and add up to -24
    7·1 answer
  • Can you prove these similar triangle step by step?
    14·1 answer
  • Next Question!!? Help please... &lt;3
    13·2 answers
  • How do I solve this equation?
    15·1 answer
  • When solving secθ=−4.2 for 180°≤θ≤360°, how many possible answers are there?
    10·1 answer
  • Rena`s rowboat drifts 23 feet away from the shore, followed by another 9 more feet. What equation represents Rena`s rowboat posi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!