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Masteriza [31]
2 years ago
12

when 30 bolts are tested for hardness, their indexes have a standard deviation of 3.9. Test the claim that the standard deviatio

n of the hardness indexes for all such bolts is 6.1. use a 0.01 level of significance.
Mathematics
1 answer:
HACTEHA [7]2 years ago
5 0

Answer:

nebraskan Vulunnter na bumaril sa tatlong piliponong sundalo na siyang naging hudyat ng digmaan

Check your spelling or try different keywords

Ref A: D4EA49C383DC4782B921C6733B0FE57B Ref B: SG1EDGE0220 Ref C: 2020-12-08T02:28:46Z

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State the degree of the polynomial. 2x3 - x4 + 5x2 - x
labwork [276]
The degree is 4 because it is the largest exponent out of all the variables.
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3 years ago
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2 years ago
Use the quadratic formula to find the solutions to the quadratic equation below 2x^2-5x+5=0
Serggg [28]

Answer:

x = (5 + i sqrt(15))/4 or x = (5 - i sqrt(15))/4

Step-by-step explanation:

Solve for x:

2 x^2 - 5 x + 5 = 0

Hint: | Using the quadratic formula, solve for x.

x = (5 ± sqrt((-5)^2 - 4×2×5))/(2×2) = (5 ± sqrt(25 - 40))/4 = (5 ± sqrt(-15))/4:

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Hint: | Express sqrt(-15) in terms of i.

sqrt(-15) = sqrt(-1) sqrt(15) = i sqrt(15):

Answer: x = (5 + i sqrt(15))/4 or x = (5 - i sqrt(15))/4

5 0
3 years ago
13. Dr. Jones took out a loan for a new medical instrument cleaning system. The interest paid on the loan was $650. The loan was
Ivan
Given that the loan is paid for 24 months or 2 years and the interest rate is 2.75% which is $650. In order for us to find the amount that Dr. Jones borrowed, let us put it this way. ? x 0.0275 = 650. So we divide 650 by 0.0275 and the answer is 23,636.36. Hope this answers your question.
7 0
3 years ago
What is the answer? Please tell me soon.
kykrilka [37]

Answer:

61

Step-by-step explanation:

it's only 1 number difference

5 0
2 years ago
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