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3 years ago

Does 10p/2q = 5p/q I think it is not equal but it doesn't seem right.

Mathematics

1 answer:

motikmotik3 years ago

5 0

Answer:

Yes, those two are equal.

Step-by-step explanation

(10p/2q)*2/2=5p/q

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If anyone helps me with this i’ll give you brainlist :) <br> please help i’m struggling rn

fredd [130]

Answer:

y intercept is 140, slope is 2/1

Step-by-step explanation:

sorry, not sure about the function

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2 years ago

Read 2 more answers

) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick

Feliz [49]

Answer:

Therefore the mass of the of the oil is 409.59 kg.

Step-by-step explanation:

Let us consider a circular disk. The inner radius of the disk be r and the outer diameter of the disk be (r+Δr).

The area of the disk

=The area of the outer circle - The area of the inner circle

= $\pi (r+\triangle r)^2- \pi r^2$

$=\pi [r^2+2r\triangle r+(\triangle r)^2-r^2]$

$=\pi [2r\triangle r+(\triangle r)^2]$

Since (Δr)² is very small, So it is ignorable.

∴ $A=2\pi r\triangle r$

The density $\delta (r)= \frac{40}{1+r^2}$

We know,

Mass= Area× density

$=(2r \pi \triangle r)(\frac{40}{1+r^2}})$

Total mass $M=\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i$

Therefore

$\sum_{i=1}^n \frac{80r_i\pi }{1+r^2}\triangle r_i=\int_0^5 \frac{80r\pi }{1+r^2}dr$

$=40\pi[ln(1+r^2)]_0^5$

$=40\pi [ln(1+5^2)-ln(1+0^2)]$

$=40\pi ln(26)$

= 409.59 kg (approx)

Therefore the mass of the of the oil is 409.59 kg.

3 0

2 years ago

The graphs below have the same shape. What is the equation of the red<br> graph?

Alekssandra [29.7K]

Where are the graphs??? How’re we supposed to send you the answers?

4 0

2 years ago

2x+2y= 24 <br> x=3y <br> What is the value of x+y?

natita [175]

Answer:

x = 9

y = 3

Step-by-step explanation:

2x + 2y = 24 is the same as x + y = 12

using substitution, x = 12-y

12 - y = 3y

12 = 4y

y = 3

x = 3(3)

x = 9

5 0

3 years ago

0.05x =0.5 can someone please helppppp!!!!!!!!!!

Tcecarenko [31]

Answer:

x equals 10

Step-by-step explanation:

you are moving the 5 from the hundredth value to the tenth, meaning it is becoming a higher number. for this one, just multiply by 10.

4 0

2 years ago