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adell [148]
3 years ago
14

29) PLEASE HELP WITH QUESTION. MARKING BRAINLIEST + POINTS GIVEN.

Mathematics
1 answer:
Reika [66]3 years ago
3 0
 x^{4} -32 x^{2} -144 will factor into the following
( x^{2} +4)( x^{2} -36)
Set each factor equal to 0:
x^{2} +4=0 or x^{2} -36=0
x^{2} =-4         x^{2} =36
x = +/- 2i                         x = +/- 6

Answer: 2i, 6, -6
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30 points !!!
Assoli18 [71]
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Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 10 Allen's hummingb
ruslelena [56]

Answer: provided in the explanation segment

Step-by-step explanation:

(a). from the question, we can see that since that б is known, we can use standard normal, z.

we are asked to find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?

⇒ 80% confidence interval for the average weight of Allen's hummingbirds is given thus;

x ± z * б / √m

which is

3.15 ± 1.28 * 0.32/√10

= 3.15 ± 0.1295 = 3.0205 or 3.2795

(b). normal distribution of weight (c) б is known

(c). option (a) and (e) are correct

(d).  from the question, let sample size be given as S

this gives';

1.28 * 0.32/√S = 0.15

√S = (1.28 * 0.32) / 0.15 = 2.73

S = 7.4529

cheers i hope this helps

6 0
3 years ago
Each of the letters of the word ALABAMA are written on a piece of paper and then
Kruka [31]

Answer:

3/7

Step-by-step explanation:

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2 years ago
Find slope (17,11), (6,-2)
Snowcat [4.5K]

Answer:

The slope is 1.181818182 or just round to 1.18.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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