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trapecia [35]
3 years ago
14

Help help help hehelp help

Mathematics
2 answers:
gtnhenbr [62]3 years ago
7 0
The answer is C. she should call her supervisor immediately disregarding any chance to forget the customer<span />
Nookie1986 [14]3 years ago
6 0
C, always go with supervisors 

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I want to know what the answer is in a fraction.
Anon25 [30]
Move all terms that don't contain K to the right side and solve.

K= Z/3 + 3
5 0
3 years ago
A bridge on a river is modeled by the equation h = -0.2d2 + 2.25d, where h is the height and d is the horizontal distance. For c
icang [17]
The answer is 2.2108
Solution:
first equation:
h = -0.2d² + 2.25d-d + 6h = 21.77
2nd equation:-d + 6h = 21.77d = 6h - 21.77
Then substitute:h = -0.2(6h - 21.77)² + 2.25(6h - 21.77)h = 3.9968
Answer:d = 2.2108

6 0
3 years ago
Read 2 more answers
Statistics professors believe the average number of headaches per semester for all students is more than 18. From a random sampl
kompoz [17]

Complete Question

Statistics professors believe the average number of headaches per semester for all students is more than 18. From a random sample of 15 students, the professors find the mean number of headaches is 19 and the standard deviation is 1.7. Assume the population distribution of number of headaches is normal.the correct conclusion at \alpha =0.001 is?

Answer:

There is no sufficient evidence to support the professor believe

Step-by-step explanation:

From the question we are told that

     The population mean is  \mu =  18

     The sample size is  n  =  15

      The sample mean is  \=  x  =  19

      The standard deviation is  \sigma =  1.7

      The level of significance is  \alpha  =  0.001

The null hypothesis is  H_o:  \mu = 18

The  alternative hypothesis is  H_a :  \mu > 18

 The critical value of the level of significance from the normal distribution table is    

         Z_{\alpha } =  3.290527

The test hypothesis is mathematically represented as

           t =  \frac{\= x  -  \mu }{ \frac{\sigma}{ \sqrt{n} } }

substituting values  

         t =  \frac{ 19  - 18}{ \frac{1.7}{ \sqrt{15} } }

         t =  2.28

Looking at the value of  t and  Z_{\alpha } we can see that t <  Z_{\alpha } so we fail to reject the null hypothesis.

This mean that there is no sufficient evidence to support the professor believe

     

       

3 0
4 years ago
What is the answer 4x+3=-5
weqwewe [10]

Answer: x=-2

Step-by-step explanation:

What we are doing is isolating the variable

4x+3=-5

4x-3=-3 subtract 3 from five

4x=-8 divide to solve x

x=-2

5 0
3 years ago
Read 2 more answers
HELP PLEASE 25 points! y=-1/4(x+2)^2+1 vertex: axis: y-int: and then graph it
kolezko [41]

Answer:

x=-1/4

Step-by-step explanation:

this might be wrong

5 0
3 years ago
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