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Grace [21]
3 years ago
10

If you flip a coin or roll a 6-sided die, what is the probabilty that you will flip a tails and roll a 2?

Mathematics
1 answer:
telo118 [61]3 years ago
3 0

Answer:

\frac{1}{12}

Step-by-step explanation:

P(tail) = \frac{1}{2}

P(2) = \frac{1}{6}

P(tail and 2 ) = \frac{1}{2} × \frac{1}{6} = \frac{1}{12}


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15% of 33 =

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= 0.15 * 33

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3 0
3 years ago
The core melt- down and explosions at the nuclear reactor in Chernobyl in 1986 released large amounts of strontium-90, which dec
elena-14-01-66 [18.8K]

If S(t) is the amount of strontium-90 present in the area in year t, and it decays at a rate of 2.5% per year, then

S(t+1)=(1-0.025)S(t)=0.975S(t)

Let S(0)=s be the starting amount immediately after the nuclear reactor explodes. Then

S(t+1)=0.975S(t)=0.975^2S(t-1)=0.975^3S(t-2)=\cdots=0.975^{t+1}S(0)

or simply

S(t)=0.975^ts

So that after 50 years, the amount of strontium-90 that remains is approximately

S(50)=0.975^{50}s\approx0.282s

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We can confirm this another way; recall the exponential decay formula,

S(t)=se^{kt}

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0.975s=se^k\implies k=\ln0.975

Then after 50 years, we have

S(50)=se^{50k}\approx0.282s

5 0
3 years ago
Pablo tiene $150 pesos, se gastó la tercera parte de su dinero el domingo, y el lunes se gastó las 2/5
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Answer:

Step-by-step explanation:

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2 years ago
Write the function in vertex form, and identify its vertex. g(x) = 5x2 - 50x + 128
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Hello : 
<span>g(x) = 5x² - 50x + 128    
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       = 5 (x²-10x+5²-5² +128/5)
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3 years ago
Find the distance between the points -18 and -42. Show your work for full credit. (2 points.)
Masja [62]

Answer:

-24

Step-by-step explanation:

Easy way: 42 - 18 = 24, then translate it to negative 24 because your numbers are negative.

A little bit harder way: -42 + (-18) or -42 + 18 = -24

5 0
2 years ago
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