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3 years ago

Solve the equation m²+4m=-2

Mathematics

2 answers:

lozanna [386]3 years ago

7 0

Answer: There's two solutions to this problem:

1. m =(4-√8)/2=2-√ 2 = 0.586

2. m =(4+√8)/2=2+√ 2 = 3.414

UNO [17]3 years ago

4 0

Step 1: Subtract -2 from both sides.
m2+4m−(−2)=−2−(−2)
m2+4m+2=0
Step 2: Use quadratic formula with a=1, b=4, c=2.
m=−b±√b2−4ac2a
m=−(4)±√(4)2−4(1)(2)2(1)
m=−4±√82
m=−2+√2 or m=−2−√2

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The confidence interval for a difference in population proportion is calculated following these steps:

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$p_{1}=\frac{30}{120}=0.25$

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Second, calculate standard deviation for each proportion:

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Now, we calculate standard error for difference:

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