10/14/16

A wooden box ,with a mass of 22kg is pulled at a constant speed with a rope that makes an angle of 25degrees with the wooden floor. What is the tension in the..
What is the tension in the rope?
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10/13/16

In this exercise, I was given an hyperbolic trig expression to simplify but I am stuck on this last one
The expression given is sinh (lnt).   To simplify I thought I could substitute in the e format of sinh and I got 1/2 (e^x -e^-x) lnt. I factored out an e^-x and then I got 1/2 e^-x elnt. Then I... more
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10/13/16

Could you please explain some things about hyperbolic functions that I don't quite understand from my textbook, or my teacher.
The first statement is " the function tanhx is odd". This is what my textbook said. When I asked my teacher she said this means that tanh (-x)= -tanhx. I still don't understand this because isn't... more
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10/13/16

The ages of three brothers are consecutive integers with the sum of 96. How old are the brothers?
I need help with algebra 1 word problems. I'm not good with algebra so it would help me a lot.
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10/13/16

what is the answer of the question?
Degree 4; zeros −5, 0, 1, 6; coefficient of x3 is 4 find the polynomial 
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10/13/16

A rocket is fired upward with a velocity? (v) of 590 feet per second. Find how many seconds pass before the rocket reaches the ground ?(Sequals=?0) again. Us
A rocket is fired upward with a velocity? (v) of 590 feet per second. Find how many seconds pass before the rocket reaches the ground ?(Sequals=?0) again. Use the quadratic equation Upper S equals... more
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10/13/16

Quadratic formulas and discriminants
Look at the equation below.X^2-6x+13=0what is the value of the discriminant of the equation? WHAT does the value of the discriminant TELL YOU about the solutions to this equation? and determine the... more
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10/13/16

limit of sin(x)/x as x approaches infinity
I believe it equls 1, but how?  I tried L'Hopital's Rule and still can not get just a Cos(x) as x approaches infinity
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10/13/16

n=250e^kt n=375 t=7, if n=750 what is t?
Solve for T, using natural log please!!
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10/12/16

Finding the Distance in m/s
The speed of a car at 80km/h corresponds to 200m/s. If the car is travelling at 210km/h how far does it travel in m/s?Need equation Show cross multiplication show solve for x show division in... more
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10/12/16

Given 54.9020 g of caffeine and the following atomic weights, how many mmoles (millimoles) of caffeine do you have? Remember that a mmoles is 1/1000 of a mole.
 I've been trying to solve this problem but I don't know if I have to add the C, H, N and O molecular weight along with the molecular weight after converting the mole to mmoles. please help!
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10/12/16

Car Speed from km/h to m/s
The speed of a car at 80km/h corresponds to 100m/s. if the car is travelling at 210km/h how far does it travel in m/s?
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10/12/16

How to find the derivative with an e base and trig exponent. Please correct my logic
So the function that was given to me was y(t) = t·(e^sec(t)). Using the information I was given from some of my previous questions I used the product rule to find e^sec(t)+sec(t)tan(t)... more
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10/12/16

non-linear function
In Algebra 1 I am given the following problem:   Give an example of a non-linear function. Please help me.
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10/12/16

how to find the derivative if I can't use the chain rule on a trig function
f(x) = ((tan^3)(x) + 10)^2 So my teacher says you can only use the chain rule twice before it no longer applies. So I don't know how to take this derivative if I have to use the chain rule in the... more
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10/12/16

what is the answer
the top of a pizza box has an area of 64 square inches by what scale factor would the pizza box top need to be dialatd to fit a large pizza that has the radius of 7 inches   
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10/12/16

how to take a derivative of a sin^2(x) function
So I looked over the book and now I know the derivatives of the basic trig functions but I don't know what sin^2 would be. If you just square the regular derivative would sin^2(8x) − πx have the... more
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10/12/16

3(5)^2+8-20
I dont know what to do with the (5) is is it 35^2 or just five thats the only part that im confues but i nedd theanswer NOW!!!!
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10/12/16

School bus uses 3/4 tank of gas in 5 days. How much gas does the bus use with 4 daysus use with.
School bus uses 3/4 of a tank of gas to drive in a week with 5 school days. How much gas does the. Is use to drive with a 4 school day
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10/12/16

quadratic function (word problem)
A ball is thrown up in the air from the ground and follow the function h(t) = 50t - 4.90t2 where t is time in seconds. what is the total time the ball stays in the air.   I need help in answering... more
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10/12/16

quadratic? equation, quadratic formula.
The length of a rectangular air filter is 5 inches less than twice the width. Find the length and width of the filter if the area is 273 square inches.
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10/12/16

FindING the approximation of a sqroot
A) f(x) = sqr (x) Find the tangent line for x = 25.   B) using the tangent line in a, find the approximation of sqr (26)   I know how to do part A but I don't know how to do part B. How would... more
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10/12/16

two airplanes depart simultaneously from an airport.One flies due south, the other flies due east at a rate 20 mi/h faster than that of the other airplane.
two airplanes depart simultaneously from an airport.One flies due south, the other flies due east at a rate 20 mi/h faster than that of the other airplane. After one hour , radar indicates that the... more
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10/12/16

An architect designs a rectangular flower garden such that the width is exactly two thirds of the length of 390 feet of an antique picket fencing are to be used
What's the  length of the garden and what is the width of the garden?
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10/12/16

The difference of 2/5 of a number and 8 is 7/5 of that number, what is the number?
 The difference of 2/5 of a number and 8 is 7/5 of that number, what is the number?
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