11/08/20

Expected cost and Probability

A store owner has overstocked a certain item and decides to use the following promotion to decrease the supply. The item has a marked price of $100. For each customer purchasing the item during a... more
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11/08/20

Statistics, Probability

In a certain country, 40% of the population has covid-19. If one person at a time is selected at random, what is the probability that The 1st person found with covid-19 is the 5th person... more
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11/08/20

Statistics Question
You have recently took a statistics exam and your instructor just returned your graded exam. The instructor announced that 70% of the students scored below the mean. How do you reconcile this with... more
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11/07/20

What is the product of 5 - 3i and the conjugate of 3 + 2i
What is the product of 5 - 3i and the conjugate of 3 + 2i Thank you for your help, mind also showing the work for it? Thank you.
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11/07/20

find all solutions between 0<x<2pi
2cos^2(x) = 3sin(x)+3
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11/07/20

homework - functions
The function f ( x ) = − 2 x 3 − 15.84 x 2 + 125.4528 x − 2.93 is increasing on the open interval ( , ). It is decreasing on the open interval ( − ∞ , ) and the open interval ( , ∞ ). The function... more
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11/07/20

Third try and I still do not quite understand this problem (despite the wonderful explanation). I am so sorry, but I truly need help and I don't know the answers. Help from anyone would be amazing! :)
6.42 Evolution versus Creationism:  A Gallup Poll released in December 2010 asked 1019 adults living in the Continental U.S. about their belief in the origin of humans. These results, along with... more
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11/07/20

Determine the area of the inner loop of the polar curve r = 2 + 4 cos (θ).
Determine the area of the inner loop of the polar curve r = 2 + 4 cos (θ).Type your answer in the space below and give 3 decimal places. If your answer is less than 1, place a leading "0" before... more
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11/06/20

Give the equation modeling the displacement
An object moves in simple harmonic motion with amplitude 8m and period 1 minute. At time t=0 minutes , its displacement d from rest is -8m , and initially it moves in a positive direction. Give the... more
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11/06/20

Write the polynomial function in standard form with the given roots. x = −i and x = √6
So confusing to me.................
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11/06/20

What is the length of the curve with parametric equations x = t - sin(t), y = 1 - cos(t)
What is the length of the curve with parametric equations x = t - sin(t), y = 1 - cos(t) from t = 0 tot = 2π? (4 points)answer choices 8 4 8π 2π
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11/06/20

If f is continuous find the following
If f is continuous and ∫(Top: 24, Bottom:0) f(x)dx=50, find ∫(Top:4, Bottom:0) f(6x)dx)I'm not very good with my substitution, and I have been having some trouble with this. If you can help, thank... more
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11/06/20

Two forces of 27 pounds and 62 pounds act on a body so that the resultant is a force of 76 pounds. Find, to the nearest degree, the angle between the resultant and the larger force.
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11/06/20

What is the value of a such that (−2, 1) and (0, a) lie on a line parallel to the line passing through points (5, 7) and (7, 4)?
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11/06/20

Find out what (notB∣A) is equal to
Use the following probabilities to answer the question. It may be helpful to sketch a Venn diagram.P(A)=0.32, P(B)=0.63 and P(AandB)=0.05.P(notB∣A)=
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11/06/20

What is (B∣notA)=

Use the following probabilities to answer the question. It may be helpful to sketch a Venn diagram.P(A)=0.43, P(B)=0.32 and P(AandB)=0.25.P(B∣notA)=
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11/05/20

Precalculus help
How do I find the possible rational zeros of the function g(x) = x^3 -5x^2 -7x +6
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11/05/20

Let g(x)= x squareroot(4-x^2)
Let g(x)= x squareroot(4-x^2)a) Find g'(x)b) Find the critical numbers of g.c) Find the absolute maximum and absolute minimum values of g on the interval [-2,6/5]
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11/05/20

How to solve this one, Thank you

If tanx=20/99, where x in quadrant III, then find the exact value of each of the following. Give your answer as a reduced fraction.sin(2x)=   cos(2x)=   tan(2x)=
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11/05/20

Find the next 2 terms of this sequence: 1/8, 2/7, 1/2, 4/5
Please help! Not good at this stuff.
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11/05/20

i need help with this math problem its for Ellipses.

Center at the origin, symmetric with respect to the x– and y-axes, focus at (3,0), and major axis is twice as long as minor axis.
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11/05/20

Find all solutions to cos(8x)-cos(2x)=sin(5x) on 0<x<π.

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11/05/20

CALCULUS POLAR CURVES NEED HELP ASAP PLS
Find the slope of the tangent line to the polar curve r = 2 sin θ at the point where  . (4 points)ANSWER CHOICES Undefined 0 1 -1
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11/05/20

Expand the following: (5x - 6y)^5
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11/05/20

Determining the equation for the line that's tangent to a graph.
Hello,I have this question that I'm struggling with:Find an equation of the line that is tangent to the graph of:f (x) = 4 / sqrt(2-x) at the point (1,4). Use the tangent line to approximate... more
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