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3 years ago

Please help me oh please

Mathematics

2 answers:

mars1129 [50]3 years ago

5 0

Answer: D or y= 4/3+ 18

Step-by-step explanation:

slega [8]3 years ago

4 0

Answer:

the answer is D

Step-by-step explanation:

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In 2015 the population of 895 quail increases at an annual rate of 3.5%. In writing an

spayn [35]

Answer:

y=895•1.07^x Y is the population of quails and X is the amount of years that have passed.

Step-by-step explanation:

hope this helps

7 0

3 years ago

What is the distance between points (-5, 5) and (2, 3)

scZoUnD [109]

the answer is (7,2). your welcome

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3 years ago

Thirty five percent of the employees in a company have managerial positions, and 67 percent of the employees in the company have

seraphim [82]

Answer:

49% of employees who either have MBA or are managers.

Step-by-step explanation:

We are given the following information in the question:

P(Managerial) = 35% = 0.035

P(MBA) = 67% = 0.67

$P(\text{Managerial} \cap \text{MBA}) = 53\% = 0.53$

We have to find the probability of employees who either are have MBA or are managers.

According to De-Morgan's law:

$P(\text{Managerial} \cup \text{MBA}) = P(\text{Managerial}) + P(\text{MBA}) - P(\text{Managerial} \cap \text{MBA}) \\P(\text{Managerial} \cup \text{MBA}) = 0.35 + 0.67 - 0.53 = 0.49$

Thus, around 49% of employees who either have MBA or are managers.

7 0

3 years ago

Carlos wants to get an average of 92 percent in his science class. The science teacher has given 5 tests. Carlos's scores on 4 o

LenaWriter [7]

Carlos would have to get 92
Plug in the numbers and add them to what he got on his original test and that would be (92=answer)

5 0

3 years ago

Suppose that 60 percent of customers at a McDonalds purchase a hamburger, and assume that the purchases of different customers a

Alborosie

Answer:

a) 83.87% probability that at most 7 of the next 10 customers will order a hamburger.

b) 25.08% probability that exactly 6 of the next 10 customers will order a hamburger

Step-by-step explanation:

For each customer at McDonalds, there are only two possible outcomes. Either they purchase a hamburguer, or they do not. The purchases of different customers are independent. So we use the binomial probability distribution 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.

60 percent of customers at a McDonalds purchase a hamburger

This means that $p = 0.6$

a) What is the probability that at most 7 of the next 10 customers will order a hamburger? (3 POINTS).

This is $P(X \leq 7)$ when n = 10.

We know that either at most 7 of the next customers will order a hamburguer, or more than 7 will. The sum of these probabilities is decimal 1. So

$P(X \leq 7) + P(X > 7) = 1$

$P(X \leq 7) = 1 - P(X > 7)$

In which

$P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10)$

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

$P(X = 8) = C_{10,8}.(0.6)^{8}.(0.4)^{2} = 0.1209$

$P(X = 9) = C_{10,9}.(0.6)^{9}.(0.4)^{1} = 0.0403$

$P(X = 10) = C_{10,10}.(0.6)^{10}.(0.4)^{0} = 0.0001$

$P(X > 7) = P(X = 8) + P(X = 9) + P(X = 10) = 0.1209 + 0.0403 + 0.0001 = 0.1613$

$P(X \leq 7) = 1 - P(X > 7) = 1 - 0.1613 = 0.8387$

83.87% probability that at most 7 of the next 10 customers will order a hamburger.

b) What is the probability that exactly 6 of the next 10 customers will order a hamburger? (3 POINTS)

This is P(X = 6).

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

$P(X = 6) = C_{10,6}.(0.6)^{6}.(0.4)^{4} = 0.2508$

25.08% probability that exactly 6 of the next 10 customers will order a hamburger

7 0

3 years ago