If you help me with all those questions i swear i’ll give you an extra 60 points

Mathematics

1 answer:

Butoxors [25]2 years ago

7 0

You just have to use your calculator

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A dentist polls his patients and finds that 83 percent brush their teeth at least twice a day, 47 percent floss daily, and 19 pe

puteri [66]

Answer:

The correct option is B. 23%

Step-by-step explanation:

Let the event that patient brushes his teeth at least twice a day is denoted by A

So, P(A) = 0.83

Let the event that patient flosses daily is denoted by B

So, P(B) = 0.47

Now, it is given that 19 percent patients brush at least twice a day and floss daily.

⇒ P(A and B) = 0.19

Now, we need to find conditional probability of occurring event B given A has occurred.

$\implies P(B|A) =\frac{P(A\: and\: B)}{P(A)}\\\\\implies P(B|A) = \frac{0.19}{0.83}\\\\\implies P(B|A) = 0.2289\approx 0.23$

Hence, Nearest required percentage = 23%

Therefore, The correct option is B. 23%

4 0

2 years ago

Read 2 more answers

The width and length of a rectangle (in feet)are consecutive odd integers. If the length is increased by 5 feet, the area of the

hodyreva [135]

The actual (late) answer is 35ft^2

8 0

2 years ago

How do you decide which operations to use when you are solving a problem? Give an example.

deff fn [24]

It really depends on what kind of problem. like if you are doing a word problem or whatever than you should read the question a couple times, underline key words, DECIDE which operation to use, refer to the question and see if it makes sense. Hope I helped :)

3 0

2 years ago

Solve the system of equations y=3x y=x^2-18

never [62]

Answer:

Point Form:

(6,18), (-3,-9)

Equation Form:

x=6, y=18

x=-3, y=-9

Step-by-step explanation:

Solve for the first variable in the first equation, then substitute the result into the other equation.