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GarryVolchara [31]
2 years ago
9

9. If DF = 42, find DE.7x+1 4x-3DEF what is DE​

Mathematics
1 answer:
andreev551 [17]2 years ago
3 0

Answer:

29

Step-by-step explanation:

So DF = 42, And we know that DF = DE + EF

Therefore (7x+1) + (4x-3) = 42

11x -2 = 42

11x = 44

x = 4

Substitute x = 4 onto DE equation, so 7(4) +1

= 29.

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</span><span>Ed bought 1.25 liters more water than juice, it is FALSE
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2 years ago
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A random sample of 25 roundtrip flights between Philadelphia and Dallas has an average airfare of $393.50 with a sample standard
Sauron [17]

Answer:

$393.50+/-$19.72

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Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

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Substituting the values we have;

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Therefore, the 95% confidence interval (a,b) = ($373.78, $413.22)

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2 years ago
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Answer: The charge was right.

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