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3 years ago

Nancy found that x=1 is one solution to the quadratic eqaution (x+2)2=a.What is the Value of a ?

Mathematics

2 answers:

horrorfan [7]3 years ago

8 0

Insert 1 into your equation (1+2)2=a 1+2=3 and 3X2=6 so therefore a=6

coldgirl [10]3 years ago

6 0

(x + 2)·2 = a

(1 + 2)·2 = a

3·2 = a

a = 6

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How many students must be randomly selected to estimate the mean weekly earnings of students at one college? We want 95% confide

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Answer:

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The (1 - α)% confidence interval for population mean (μ) is:

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