01/31/20

math problem POW

Suppose a and b are positive real numbers such that ab=1/9 a(b+1)=7/9 b(a+1)=18, what is (a+1) (b+1)?

01/30/20

If tan ⁡x=60/11, and π<x<3π/2, what is sin⁡(x−π)?

What is the correct way to apply the Difference Identity to find sin75∘?a) sin75∘=sin(120∘−45∘)=sin(120∘)cos(45∘)+cos(120∘)sin(45∘)b) sin75∘=sin(120∘−45∘)=sin(120∘)sin(45∘)−cos(120∘)cos(45∘)c)... more

01/23/20

write an equation of the line that is perpendicular to the given line and that passes through the given point

write an equation of the line that is perpendicular to the given line and that passes through the given point y+1=2(x-3); (5,0)

12/11/19

How many randomly selected students must be surveyed in order to be 90% confident that the sample percentage has a margin of error of 1.5 percentage points?

(a)  Assume that there is no available information that could be used as an estimate of .Answer: (b)  Assume that another study indicated that % of college students carry weapons. Answer: 

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