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kipiarov [429]
2 years ago
12

I need you to explain the answer please and thank you!!

Mathematics
1 answer:
iogann1982 [59]2 years ago
5 0

Answer: January, because negative numbers are positive numbers' opposite; so -11.4 < -10.4

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Refer to the above graph to answer questions 1 through 5. 1. Lines A and B form what type of system?
xeze [42]

Answer:

Lines A and B form a consistent independent system

Step-by-step explanation:

we know that

A consistent system of equations has at least one solution

In this problem

The system of Line A and Line B has only one solution, since it has only one point of intersection.

and the Line A is different to Line B

therefore

Lines A and B form a consistent independent system

(independent because Lines A and B are different)

4 0
3 years ago
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zloy xaker [14]

Answer:

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3 0
3 years ago
What is 0.4 divided by 5.12 in long division
Svetradugi [14.3K]
Start by mult. both 0.4 and 5.12 by 100.  What is 40 divided by 512?

        ___.078_______________
512 /  40.000
           3584
          -----------
             4160
             4096
           ---------
                 64              and so on.   Calculator answer is 0.078125.
3 0
3 years ago
0.0000024 in scientific notation
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Hey, here it is: 2,4 x 10^-6
8 0
2 years ago
The average expenditure on Valentine's Day was expected to be$100.89 (USA Today, February 13, 2006). Do male and femaleconsumers
stealth61 [152]

Answer:

(a) $62.16

(b) Male: $15.00

Female: $10.06

(c) Confidence Interval for male expenditure is ($106.40, $136.40)

Confidence interval for female expenditure is ($49.18, $69.30)

Step-by-step explanation:

(a) Male expenditure

Sample mean = $135.67, sd=$35, n=40, Z=2.576

Population mean = sample mean - (Z×sd)/√n = 135.67 - (2.576×35)/√40 = 135.67 - 14.27 = $121.40

Female expenditure

Sample mean= $68.64, sd=$20, n=30, Z=2.576

Population mean = 68.64 - (2.576×20)/√30 = 68.64 - 9.40 = $59.24

$121.40 - $59.24 = $62.16

(b) Male: Error margin = (t-value × sd)/√n

Degree of freedom = n-1 = 40-1= 39. t-value corresponding to 39 degrees of freedom and 99% confidence level is 2.708

Error margin = (2.708×35)/√40 = 94.78/6.32 = $15.00

Female

Degrees of freedom = n-1 = 30-1 = 29. t-value is 2.756

Error margin = (2.756×20)/√30 = 55.12/5.48 = $10.06

(c) Male

Confidence Interval (CI) = (mean + or - error margin)

CI = 121.4 + 15.00 = $136.40

CI = 121.4 - 15.00 = $106.40

Confidence Interval is ($106.40, $136.40)

Female

CI = 59.24 + 10.06 = $69.30

CI = 59.24 - 10.06 = $49.18

Confidence Interval is ($49.18, $69.30)

7 0
3 years ago
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