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kotykmax [81]
3 years ago
10

A bag contains 26 letters and 9 numerals. Aubrey draws two cards from the bag. What is the probability that she draws 2 numerals

?
Mathematics
2 answers:
ANEK [815]3 years ago
8 0
Assuming that she does not replace the first card, you have to combine the two probabilities of drawing a numeral, then drawing a numeral again. The probability of drawing a numeral is \frac{9}{35} or 25.71%. The 35 is a count of all the cards in the bag. The probability that she draws a numeral the second time without replacing the first one is now: \frac{8}{34} or 23.53%. Multiplying these together gets you: \frac{36}{595} or 6.05%.
Ne4ueva [31]3 years ago
7 0
The probability is 34% because 9/26=.34615384615. The first 2 numbers makes the percentage
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The doubling period of a bacterial population is 15 minutes. At time t= 80 minutes, the bacterial population was 90000​
Papessa [141]

Answer:

here i finished!

hope it helps yw!

Step-by-step explanation:

The doubling period of a bacterial population is 15 minutes.

At time t = 90 minutes, the bacterial population was 50000.

Round your answers to at least 1 decimal place.

:

We can use the formula:

A = Ao*2^(t/d); where:

A = amt after t time

Ao = initial amt (t=0)

t = time period in question

d = doubling time of substance

In our problem

d = 15 min

t = 90 min

A = 50000

What was the initial population at time t = 0

Ao * 2^(90/15) = 50000

Ao * 2^6 = 50000

We know 2^6 = 64

64(Ao) = 50000

Ao = 50000/64

Ao = 781.25 is the initial population

:

Find the size of the bacterial population after 4 hours

Change 4 hr to 240 min

A = 781.25 * 2^(240/15

A = 781.25 * 2^16

A= 781.25 * 65536

A = 51,199,218.75 after 4 hrs

6 0
3 years ago
The question is below
Tanzania [10]

Answer:

B. $4.75

Step-by-step explanation:

3(4) + 7 = 19

19/4=4.75

7 0
2 years ago
Read 2 more answers
Difference
Ivan

Answer:

The value of a function is the actual calculation done at a certain point. The limit is - roughly speaking - the value at points that are “arbitrarily close” to the same point. For most commonly used functions, the value of a function at a point, and the limit at the same point, is the same - at least for most values.

4 0
2 years ago
What is the answer?
taurus [48]

x^2y^3(1-x^3y)

This is because you can at most, factor out x² and y³

5 0
3 years ago
Someone pls help me i do not understand !!
pantera1 [17]
Yea me ether did you ever find the answer
3 0
2 years ago
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