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3 years ago

Write the CONTRAPOSITIVE of the following statement: If three points are coplanar, then they are collinear.

Mathematics

1 answer:

AveGali [126]3 years ago

5 0

Answer:

If they are not collinear, then the three points are coplanar.

Step-by-step explanation

Contrapositive is the negative + opposite of the original statement.

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Joe provides photos for two online sites: site A and site B. Site A pays $0.75 for every photo Joe provides. The amount in dolla

Katyanochek1 [597]

If Joe gave 5 pics to site A. Site A would give him $0.75*5=$3.75
If Joe gave 5 pics to Site B. Site B would give him $0.25*5=$1.25
3.75-1.25=2.50
Site A gave him $2.50 more than Site B.

3 0

3 years ago

Read 2 more answers

Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the proporti

hodyreva [135]

Answer:

The sample size n = 4225

Step-by-step explanation:

We will use maximum error formula = $\frac{z_{a} S.D}{\sqrt{n} }$

but we will find sample size "n"

$\sqrt{n} = \frac{z_{a} S.D}{maximum error}$

Squaring on both sides , we get

$n = (\frac{z_{a} S.D}{maximum error})^2$

Given 99% confidence interval (z value) = 2.56

given maximum error = 0.02

$n = (\frac{z_{a} p(1-p)}{maximum error})^2$

n≤ $(\frac{2.56X\frac{1}{2} }{0.02}) ^{2}$ ( here S.D = p(1-p) ≤ 1/2

on simplification , we get n = 4225

<u>Conclusion</u>:

The sample size of two samples is n = 4225

<u>verification</u>:-

We will use maximum error formula = $\frac{z_{a} S.D}{\sqrt{n} }$ = $\frac{2.56 1/2}{\ \sqrt{4225} }$ = 0.0196

substitute all values and simplify we get maximum error is 0.02

4 0

3 years ago

An employee working 40 hours per week earns a salary of $600 per week but gets a

zzz [600]

Answer:

Step-by-step explanation:

40 hours per week*20 dollars per hour=800 dollars per week. This job makes 200 more dollars than the other job.

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3 years ago

4. Look at the first example (a).

sweet [91]

B) 200 + 3
c) 1000 + 10 + 5
d) 8000 + 2
e) 7000 + 600 + 5

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3 years ago

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Tim has $70 in his savings account. The bank offers an interest rate of 9.5% per year.

olga nikolaevna [1]

Answer:

76.65

Step-by-step explanation:

70 *.095 =6.65

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3 years ago