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3 years ago

It's number nine/ what equation is it plz help

Mathematics

2 answers:

sasho [114]3 years ago

6 0

I think the answer is C

klio [65]3 years ago

3 0

I think the answer is B sorry if it's wrong

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8³=512 indique a base

EleoNora [17]

Answer:

Step-by-step explanation:

8^3 = 8*8*8 = 512

la base = base = 8

5 0

3 years ago

The gas law for an ideal gas at absolute temperature T (in kelvins), pressure P (in atmospheres), and volume V (in liters) is PV

JulijaS [17]

Answer:

$\frac{dT}{dt}=3.78^{\circ}K/min$

Step-by-step explanation:

We have to calculate the time derivative of T=PV/nR with P and V variable and n and R constants. This is:

$\frac{dT}{dt} =\frac{d\frac{PV}{nR}}{dt}=\frac{1}{nR}\frac{d(PV)}{dt}$

What we have to do is the derivative of a product:

$\frac{d(PV)}{dt}=P\frac{dV}{dt}+V\frac{dP}{dt}$

Substituting, we have:

$\frac{dT}{dt} =\frac{P\frac{dV}{dt}+V\frac{dP}{dt}}{nR}$

where all these values are given since the time derivatives of P and V are their variation rate, using minutes.

We then substitute everything, noticing that already everything is in the same system of units so they cancel out:

$\frac{dT}{dt}=\frac{P\frac{dV}{dt}+V\frac{dP}{dt}}{nR}=\frac{(8atm)(0.16L/min)+(13L)(0.14atm/min)}{(10mol)(0.0821Latm/mol^{\circ}K)}$

And then just calculate:

$\frac{dT}{dt}=3.78^{\circ}K/min$

6 0

3 years ago

HELP PLEASE!!<br> what is the solution of the system ? y=-8x-2 and y=-6x+4

Illusion [34]

Answer: -3

Since the both equal the same value we can combine the into -8x-2=-6x+4.

From there you can solve from whatever side you want, and the answer is -3.

5 0

3 years ago

on monday the bookstore sold 75 books. on tuesday the bookstore sold 125 books. the bookstore must sell 500 book by friday how m

Serhud [2]

There were 200 books sold. so, they need to sell 300 more to have 500 total books sold.

5 0

3 years ago

Read 2 more answers

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horrorfan [7]

do you sell genius brain

7 0

2 years ago