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aleksklad [387]
3 years ago
8

If y varies inversely as the square of x, and y= 1/8 when x=1, find y when x=5

Mathematics
2 answers:
Nata [24]3 years ago
5 0

y = k / x² ( y varies inversely as the square of x )

y = 1/8 when x = 1:

1/8 = k / 1²

8 k = 1

k = 1/8

For x = 5:

y = 1/8  / 5² = 1/8 : 25 = 1/8 · 1/25 = 1/200

Answer: A ) 1/200

Hope This Helps!!!

max2010maxim [7]3 years ago
4 0

Solution is given in image attached.

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Please help me ASAP
expeople1 [14]
Your equation would be:

<span>y=15*0.06^x</span>

7 0
3 years ago
A company makes candles in the shape of a right cone. The lateral surface of each candle is covered with
julia-pushkina [17]

Answer:

The amount of paper needed = 363.3 in²

Total amount of paper and plastic needed = 564.3 in

Step-by-step explanation:

As the diagram isn't given.

Consider a right cone shown in the ATTACHMENT.

where

r = 8 in

h = 12 in

First find the value of hypotenuse s by using Pythagoras theorem

<h3>Find Lateral Area:</h3>

The amount of paper needed to cover the candle is lateral area, which is given by:

L=\pi\cdot{r}\cdot{s}\\L =\pi\cdot8\cdot14.422\\L=363.3in^2\\

<h3>Find Surface Area:</h3>

Total amount of paper and plastic is the surface area:

S=L+\pi{r}^2\\S=363.3+\pi(8)^2\\S=564.26in^2

S=564.3in^2

7 0
4 years ago
If pr is 3x+14 and qr 7x-10 what is x
mr Goodwill [35]
Start the equation by putting the equations equal to each other 3x+14=7x-10
Next +10 on both sides
3x+14=7x-10
+10 +10
You are left with 3x+24=7x
because the 10's canceled each other out.
Next -3x on both sides
3x+24=7x
-3x +3x

You are left with 24= 10x
because like before the 3's canceled each other out
Now you will divide both sides by 10

24=10x
---- -----
10 10

2.4= X is the answer!
8 0
3 years ago
Work out m and c for the line: y=3x
Tpy6a [65]

Answer:

m = 3, c = 0

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x , or y = 3x + 0 ← is in slope- intercept form

with m = 3 and c = 0

4 0
3 years ago
How do i find the percentage if my number correct is 68 and my total is 85?
Andreyy89
68 divided by 85 multiply by 100
68/85=0.8 x 100= 80%
8 0
3 years ago
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