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jonny [76]
3 years ago
9

Plz help with 2 and 3 Will give brainliest

Mathematics
1 answer:
Nikolay [14]3 years ago
3 0
The answer for #2 is 25 and the answer for #3 is 1/16.
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What number is 80% out of 50?
ValentinkaMS [17]
It is saying that 80/100 which is .80, so 50*80%= 40
5 0
3 years ago
A biker travels at a rate of 20 miles per hour. Calculate
kow [346]

Answer:

60 miles

Step-by-step explanation:

20 miles times 3

3 0
3 years ago
Read 2 more answers
Po is an oncologist with seven patients in their care. the probability that a patient will survive five years after being diagno
alekssr [168]

Answer:

0.0923 = 9.23% probability that four of the patients are still alive after five years.

Step-by-step explanation:

For each patient, there are only two possible outcomes. Either they are still alive after five years, or they are not. The probability of a patient being alive is independent of any other patient, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Po is an oncologist with seven patients in their care.

This means that n = 7

The probability that a patient will survive five years after being diagnosed with stage three breast cancer is 0.82.

This means that p = 0.82

What is the probability that four of the patients are still alive after five years?

This is P(X = 4). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 4) = C_{7,4}.(0.82)^{4}.(0.18)^{3} = 0.0923

0.0923 = 9.23% probability that four of the patients are still alive after five years.

5 0
3 years ago
The concession stand sells hot dogs and soda during the pee-wee football games.John bought 6 hot dogs and 4 sodas and paid $6.70
Eva8 [605]

Answer: Hotdog cost $0.75

Price of soda = $0.55

Step-by-step explanation:

Let the price of hot dogs be x.

Let the price of sodas be y.

6x + 4y = 6.70 ...... i

4x + 3y = 4.65 ....... ii

Multiply equation i by 4

Multiply equation ii by 6

24x + 16y = 26.80 ........ iii

24x + 18y = 27.90 ......... iv

Subtract iii from iv

2y = 1.10

y = 1.10/2

y = $0.55

Price of soda = $0.55

From equation i,

6x + 4y = 6.70

6x + 4(0.55) = 6.70

6x + 2.20 = 6.70

6x = 6.70 - 2.20

6x = 4.50

x = 4.50/6

x = $0.75

Hotdog cost $0.75

7 0
3 years ago
11/48 as a percentage
Wewaii [24]

Answer:

22.9166%

Step-by-step explanation:

That is the answer, take note that the six is infinite.

7 0
4 years ago
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