3 years ago

True or False

1 answer:

3 0

1.) false
2.) true
3.) false
Similar means equal angles and proportional sides
Triangles can be similar by SSS, AA or SAS

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tigry1 [53]

F and E are congruent with the figure above

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3 years ago

Eva8 [605]

It is 60% because 18/30=0.6

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3 years ago

zimovet [89]

Answer: 271

Step-by-step explanation:

As per given description in the question, we have

Critical value for 90% confidence interval = $z_{\alpha/2}=1.645$

[using z-value calculator ]

Margin of error : E= 0.05

Since prior estimate of population proportion is unknown so we take p= 0.5

Formula we use to find the sample size :

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$ [we assume p= 0.50]

i.e. $n=0.5(1-0.5)(\dfrac{1.645}{0.05})^2$

Simplify :

$\Rightarrow\ n=270.6025\approx271$

Therefore , the minimum sample size required = 271

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3 years ago

emmasim [6.3K]

Answer:

I'm pretty sure it's 19,497 as the 1st nearest, and 19,515 as the 2nd

Because 19,506-9 is 19,497 and 19,506+9 is 19,515

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3 years ago

Vitek1552 [10]

2x + a = b Subtract a from both sides

2x = b - a Divide both sides by 2

x = $\frac{b - a}{2}$

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4 years ago