11/20/17

Exam question
The probability of the student solving Q1 is 60% . If he solves it the probability of him passing the exam is 80% , if he doesn’t then the probability of failing is 55%.After the exam the student... more
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11/15/17

Bayes Theorem Help
Tommy is a football player who suffers an injury during the game. The team doctor looks at the injury and tells Tommy that he needs to run some tests and there is only a 20% chance he will... more
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11/14/17

(a) What is the distance between the plane and the base of the arch?
A plane is flying within sight of the Gateway Arch in St. Louis, Missouri, at an elevation of 25,000 ft. The pilot would like to estimate her distance from the Gateway Arch. She finds that the... more
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10/31/17

this is a statistics problem
P(x < 170) mean= 174 and the standard deviation = 20. I have to fine the indicated probability.  
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10/23/17

A cubic box is completely filled with 3,375.0 kg of water. What is the length of one side of the box, in meters?
What would be the length of one side of the box, in meters?
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10/23/17

find the probability of getting exactly 4 heads on 8 flips of a coin
I do not know how to figure this out
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10/22/17

with a sample space of: 5, 6, 12,13,15,18,22,50 what is the z score of 13?
Finding z-scores 
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10/18/17

A car drives off the edge of a cliff that is 106m high. The impact is 56.0m from the base of the cliff. How fast was the car going when it went over the cliff?
we were given these equations. t=√(2dx/g) and t=dx/vx
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10/13/17

How to determine if there is a limit or not in a function?
For example, when a limit approaches 0: x^2-5x+7/ x^3
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10/10/17

The results of a test are normally distributed with a mean of 67.5 and a standard deviation of 15 ..
The results of a test are normally distributed with a mean of 67.5 and a standard deviation of 15. If a score is selected at random, then the probability that the score is between 75 and 90 is?
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10/06/17

Find the equation of the line.
Let f(x)=x^2 and g(x)=(x-74)^2+27. There is one line with positive slope that is tangent to both of the parabolas y=f(x) and y=g(x) simultaneously. 
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10/05/17

Volume, height and radius
sand is leaking from.the back of a dump.truck.and forming a.conical.pile on the ground. the sand is leaking at the rate of 0.7m3 per hour. if the base radius of the pile is always 0.2 times the... more
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09/14/17

Find the equation of the line tangent to the circle x^2+y^2=36 at point (11,5)
Final answer should be in General equation of the line   ?x+?y-?=0 ? means unknown.
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09/07/17

A motorboat maintained a constant speed of 14 miles per hour relative to the water in going 33 miles upstream and then returning. The total time for the trip wa
A motorboat maintained a constant speed of 14 miles per hour relative to the water in going 33 miles upstream and then returning. The total time for the trip was 7.0 hours. Use this information to... more
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08/28/17

Solve the inequality. The absolute value of (x-1) minus the absolute value of (x-3) is greater than or equal to 5.
The absolute value of (x-1) minus the absolute value of (x-3) is greater than or equal to 5.   Solve the inequality 
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08/02/17

If 1800 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box.
If 1800 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box.   Volume=___?
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05/21/17

Tori, Brielle, and Abby, go shopping together. Together they spend $215. Brielle spends twice as much as Tori, and Abby spends one dollar less than three times
I don't understand how to solve the problem.
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05/01/17

when measuring the volume of an object you are finding the what
I it the single dimension of an object? Amount of two dimensional space an object? Amount of three dimensional space the object occupies? Or amount of four dimensional space an object occupies?
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04/22/17

use newtons method to approximate
Use Newton's Method to approximate √10 to 6 significant figures starting with x0=3.5. Compare with the value obtained from a calculator.   √10≈________  
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04/07/17

Solve the inequality
(k+1)/ 2^k <= 1/8   please help 
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04/02/17

a car travels 780mi at a certain speed. if the speed had been 5 mph faster, the trip would have been made in 1hr less time. find the speed.
solve with quadratic formula 
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03/22/17

How do you solve this physics problem
During a rodeo, a clown runs 8.0 m north, turns 55° north of east, and runs 3.5 m. Then, after waiting for the bull to come near, the clown turns due east and runs 5.0 m to exit the arena. What is... more
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03/20/17

can you help me
three forces in a plane act on a object. The forces are 7 N, 11 N, 15 N. The angle between the 7 N and 11 N is 105 degrees, between the 11 N and 15 N forces is 147 degrees, and between the 15 N and... more
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03/20/17

How do you solve this integration problem
Evaluate the integral of dt/t√t from 1 to 4
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03/18/17

The cost of producing x units of a product is given by C(x)=600+90x−90ln(x),x≥1. Find the minimum average cost.
The cost of producing x units of a product is given byC(x)=600+90x−90ln(x),x≥1.Find the minimum average cost.
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