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olya-2409 [2.1K]
3 years ago
13

Help guys I would appreciate ​

Mathematics
1 answer:
Slav-nsk [51]3 years ago
5 0

Answer:

4 + 8

12 >= 12

TRUE

Becuase 12 equals 12

Step-by-step explanation:

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The half-life of the isotope Osmium-183 is 12 hours. Choose the equation below that gives the remaining mass of Osmium-183 in gr
raketka [301]

The given equations are incomprehensible, I'm afraid...

You're given that osmium-183 has a half-life of 12 hours, so for some initial mass <em>M</em>₀, the mass after 12 hours is half that:

1/2 <em>M</em>₀ = <em>M</em>₀ exp(12<em>k</em>)

for some decay constant <em>k</em>. Solve for this <em>k</em> :

1/2 = exp(12<em>k</em>)

ln(1/2) = 12<em>k</em>

<em>k</em> = 1/12 ln(1/2) = - ln(2)/12

Now for some starting mass <em>M</em>₀, the mass <em>M</em> remaining after time <em>t</em> is given by

<em>M</em> = <em>M</em>₀ exp(<em>kt </em>)

So if <em>M</em>₀ = 590 g and <em>t</em> = 36 h, plugging these into the equation with the previously determined value of <em>k</em> gives

<em>M</em> = 590 exp(36<em>k</em>) = 73.75

so 73.75 ≈ 74 g of Os-183 are left.

Alternatively, notice that the given time period of 36 hours is simply 3 times the half-life of 12 hours, so 1/2³ = 1/8 of the starting amount of Os-183 is left:

590/8 = 73.75 ≈ 74

6 0
3 years ago
Eight members of a chess club are having a tournament. In the first round every player will play a chess game against every othe
monitta
Same as handshake problem.
Each of n persons plays against n-1 persons for a total of n(n-1)/2 games.
The division by 2 is necessary to avoid double counting the game A vs B and B vs A.

For n=8, then number of games played in the first round is 8(8-1)/2=28 games.

3 0
3 years ago
Wich one? a? b? c? d?
Doss [256]

Answer:

I don't know but plz make me brainliest

8 0
3 years ago
Read 2 more answers
If given <img src="https://tex.z-dn.net/?f=%5Clog_p%283%29%20%5Capprox%200.14" id="TexFormula1" title="\log_p(3) \approx 0.14" a
Mrrafil [7]

Heya!

We can use the extended version product rule to solve: log_p(abc) = log_p(a) + log_p(b) + log_p(c)

We can factor 60 using 2, 3, and 5.

60 = 2^2 * 3 * 5

Substitute these numbers into the rule.

log(2^2 * 3 * 5) = 2 log_p(2) + log_p(3) + log_p(5)

Using the values given in the question, we can substitute in the equation.

2 log_p(2) + log_p(3) + log_p(5) → 2(0.09) + 0.14 + 0.21

Simplify the equation.

2(0.09) + 0.14 + 0.21

0.18 + 0.14 + 0.21

0.53

Therefore, \text{log}_p(60) = 0.53

Best of Luck!

4 0
3 years ago
Graph y= - x - 6 on a graph
iogann1982 [59]

Answer:

(Picture below)

Step-by-step explanation:

To solve this you will first need to make a coordinate plane that is 10 by 10.

After you have done that you will need to know what slope intercept form is. Slope intercept form is y=mx+b and the equation that was given was y=-x-6. In the formula y=mx+b, m is the slope or rise over run and b is where the line crosses the y axis.

Now that you know the basics of slope intercept form we can start graphing. so b in this equation is -6, so we will put the first point on -6. after we have done that we can start putting the points of the line. So since the slope is just -1x  we will have to go down one and go to the right one about 3 times and just to finish it up go up and left on 3 times to. And there you have it.

5 0
4 years ago
Read 2 more answers
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