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inessss [21]
3 years ago
7

Given that randomly chosen person eats breakfast almost everyday, what is the probablility that the person also buys cereal at l

east once a month?
11/64
11/53
53/64
53/57

Mathematics
2 answers:
OverLord2011 [107]3 years ago
8 0
Sample size who buy cereal at least once a month = {53+4}=57 (all possible outcomes)
Sample size who have breakfast AND buy cereal = {53} = favorable outcome

P(Breakfast AND cereal) = 53/57
Katarina [22]3 years ago
8 0

Answer:

The answer is C just took the test. 53/64

Step-by-step explanation:

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7 0
3 years ago
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
Suppose PR = 54, solve for QR<br> 4x-1<br> 3x-1<br> P<br> R
Svet_ta [14]

Answer:

QR = 23

Step-by-step explanation:

P, A, and R are collinear.

PR = 54

PQ = 4x - 1

QR = 3x - 1

To solve for the numerical length of PR, let's generate an equation to find the value of x.

According to the segment addition postulate:

PQ + QR = PR

(4x - 1) + (3x - 1) = 54 (substitution)

Solve for x

4x - 1 + 3x - 1 = 54

Combine like terms

4x + 3x - 1 - 1 = 54

7x - 2 = 54

Add 2 to both sides

7x - 2 + 2 = 54 + 2

7x = 56

Divide both sides by 7

\frac{7x}{7} = \frac{56}{7}

x = 8

QR = 3x - 1

Plug in the value of x into the equation

QR = 3(8) - 1 = 24 - 1

QR = 23

5 0
4 years ago
A scuba diver is 3.8 meters below the surface of the water. He is descending at a rate of 0.5 meters per minute.
Andreyy89
-3.8 - 0.5m <== ur expression

the variable (m) represents number of minutes
5 0
4 years ago
Read 2 more answers
andrea deposits 350 dollars on her checking account on tuesday on wednesday she withdraw 100 on thursday she deposit 75 dollars
Zarrin [17]

Answer: The change is -25 dollars so she currently has 325 dollars


Step-by-step explanation:


4 0
3 years ago
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