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OLga [1]
3 years ago
5

4000 adults in a random sample

Mathematics
2 answers:
Sindrei [870]3 years ago
7 0

Answer:

huh? what does that mean k

IrinaVladis [17]3 years ago
6 0
10 % of 4,000 is 400
You might be interested in
Question will save this response.
serg [7]

Answer:

r=\dfrac{PV}{nT}

Step-by-step explanation:

The given equation is :

PV=nrT

Where

P is pressure

V is volume

n is no of moles

r is Gas constant

T is temperature

We need to solve the above equation for r.

Dividing both sides of the above equation by (nT). So,

\dfrac{PV}{nT}=\dfrac{nrT}{nT}\\\\r=\dfrac{PV}{nT}

So, the value of r is equal to \dfrac{PV}{nT}.

6 0
3 years ago
What is the equation of the line that passes through the given point and is perpendicular to the given line?
skad [1K]

Step-by-step explanation:

Hey there!

The equation of a line which passes through the point (1,1) is <em>(y-1) = m1 (x-1)...............(i)</em> {using one point formula}

Also, another equation which is perpendicular to the line is <em>y = 1/5 x + 4/5..........(ii)</em>

Comparing equation (ii) with y= mx+c, we get;

Slope (m2) = 1/5.

Now, As per the condition of perpendicular lines,

m1*m2 = -1

or, m1 * 1/2 = -1

or, m1= -2

Therefore, m1 = -2.

Keeping the value of m1 in equation (i) we get;

y-1 = -2(x-1)

y-1 = -2x+1

or, y+2x-2= 0

Therefore, the required equation is 2x+y-2= 0.

Hope it helps!

6 0
3 years ago
Please help I really need it will give brainliest answer
Lisa [10]

Answer:

12b^{6} + 6b³ - 18b²

Step-by-step explanation:

6 0
3 years ago
I’m only giving brainlyest to the right answer
White raven [17]

Answer: c is the right answer

Step-by-step explanation: i just did it and i got it right.

5 0
3 years ago
100 points + Brainy<br><br> Math help please
aev [14]

Answer:

Q = -6

Step-by-step explanation:

To find the answer to this, you first must multiply the first function by 2:

2 x (x - 3y = 4)

2x - 6y = 8

Which then means that the second function is the same. This means that to find Q you need to find the number that changed +Qy into -6:

2x - 6y = 8

2x + Qy = 8

The 2x's cancel out, and then remove the equals and the 8:

-6y = Qy

<h3>So Q must be -6</h3>
<h2>Hope this helps!</h2>
5 0
4 years ago
Read 2 more answers
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