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Temka [501]
2 years ago
6

What is time-and-a-half for $7.51?

Mathematics
1 answer:
padilas [110]2 years ago
3 0

Answer:

$15.2

Step-by-step explanation:

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Suppose that 15% of the fields in a given agricultural area are infested with the sweet potato whitefly. One hundred fields in t
hram777 [196]

Answer:

a.\mu=15

b.\mu=7.8586 \ and  \ \mu=22.1414

c. Choice A- Based on limits above, it is unlikely that we would see x = 45, so it might be possible that the trials are not independent.

Step-by-step explanation:

a.Binomial distribution is defined by the expression

P(X=k)=C_k^n.p^k.(1-p)^{n-k}

Let n be the number of trials,n=100

and p be the probability of success,p=15\%

The mean of a binomial distribution is the probability x sample size.

\mu=np=100\times0.15=15

b.Limits within which p is approximately 95%

sd of a binomial distribution is given as:\sigma=\sqrt npq\\q=1-p

Therefore, \sigma=\sqrt(100\times0.015\times0.85)=3.5707

Use the empirical rule to find the limits. From the rule, approximately 95% of the observations are within to standard deviations from mean.

sd_1=>\mu-2\sigma=15-2\times3.3507=7.8586\\sd_2=>\mu-2\sigma=15+2\times3.3507=22.1414

Hence, approximately 95% of the observations are within 7.8586 and 22.1414 (areas of infestation).

c.  x=45 is not within the limits in b above (7.8586,22.1414). X=45 appears to be a large area of infestation. A.Based on limits above, it is unlikely that we would see x = 45, so it might be possible that the trials are not independent.

4 0
3 years ago
I decided to add a room to my house and now need to know the total square feet of the house. The dimensions of the original hous
SVETLANKA909090 [29]

Answer:

+) the area of the original house is:

(x + 8)(x + 12) = x² + 20x + 96.

+) the area of the new addition is:

(x + 6)x = x² + 6x

+) the total area of the house is:

x² + 20x + 96 + x² + 6x = 2x² + 26x + 96

8 0
2 years ago
Darius started his baseball card collection with 7 cards that he got from his dad. He bought 1 pack of cards each month for 20 y
koban [17]

Answer:

b

Step-by-step explanation:

4 0
2 years ago
What step can be taken to solve the equation 10x = 6 + 9x?
Flura [38]

Answer:

subtract 9x from both sides

Step-by-step explanation:

10x = 6 + 9x

9x             9x

19x = 6

0.315789474 = x

.315 = x

8 0
2 years ago
Read 2 more answers
Can you help there is not an answer choice
skad [1K]

Answer:

<h2>-3\frac{43}{72}</h2>

Step-by-step explanation:

chage the proper fraction to improper and then multiply

5 0
2 years ago
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