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notsponge [240]
3 years ago
7

15 points Describe the relationship between the probability of an event and its complement.

Mathematics
1 answer:
Lynna [10]3 years ago
7 0
Probability<span>: </span>Complement<span>. </span>Complement<span> of an </span>Event: All outcomes that are NOT theevent<span>. So the </span>Complement<span> of an </span>event<span> is all the other outcomes (not the ones we want). And together the </span>Event and its Complement<span> make all possible outcomes.</span>
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What is the surface area of the triangular prism
Harrizon [31]

Answer:

surface \: a = 9 \times 5 \\  =  45ft \times 2 \\  =   {90}^{2} ft\\ surface \: b =  \frac{1}{2} bh \\  =  \frac{1}{2 }  \times 6 \times 4 \\  = 3 \times 4 \\  = 12 \times 2 \\  =  {144}^{2} ft \\  =  90 + 144 \\  =  {234}^{2} ft

3 0
2 years ago
What are the solution(s) to the quadratic equation 9x^2=4?
Irina18 [472]

Answer:

x = 2/3 or x = -2/3

Step-by-step explanation:

Solve for x over the real numbers:

9 x^2 = 4

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides by 9:

x^2 = 4/9

Hint: | Eliminate the exponent on the left-hand side.

Take the square root of both sides:

Answer:x = 2/3 or x = -2/3

8 0
3 years ago
Please help me!!! It’s due Thursday
timama [110]
That should be the answers

5 0
2 years ago
Element X decays radioactively with a half-life of eight minutes. If there are 800 g of element X, how long, to the nearest 10th
Harman [31]

Answer: 41.5 min

Step-by-step explanation:

This problem can be solved with the Radioactive Half Life Formula:  

A=A_{o}.2^{\frac{-t}{h}} (1)

Where:  

A=22 g is the final amount of the radioactive element

A_{o}=800 g is the initial amount of the radioactive element  

t is the time elapsed  

h=8 min is the half life of the radioactive element  

So, we need to substitute the given values and find t from (1):  

22 g=(800 g) 2^{\frac{-t}{8 min}} (2)  

\frac{22 g}{800 g}=2^{\frac{-t}{8 min}} (3)  

\frac{11}{400}=2^{\frac{-t}{8 min}} (4)  

Applying natural logarithm in both sides:  

ln(\frac{11}{400})=ln(2^{\frac{-t}{8 min}}) (5)  

-3.593=-\frac{t}{8 min}ln(2) (6)  

Clearing t:

t=41.46 min \approx 41.5 min This is the time elapsed

7 0
3 years ago
PLEASE HELP!!!!!!!!!!!!!!
Maurinko [17]
X divided by 2 = y
Or you could do
Y times 2= x
3 0
2 years ago
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