495 Answered Questions for the topic Precalculus Homework

Precalculus Homework

01/31/16

I have to find the slope of the line passing through (-2, 10) and (-5,4)
Have to round to one decimal place
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Precalculus Homework

01/31/16

Find an equation of a line passing through the piont (-1,3) and parallel to the line 2x + 2y = 17
Precalc help
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Precalculus Homework

01/31/16

Find the general form of the line perpendicular to 3x +5y - 8 =0 that passes through the point (-8, 1)
Help please!
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Precalculus Homework

01/31/16

I need to find the radius of a circle given by, x^2 - 10x + y^2 + 8y = 16
rounded to 1 decimal place
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Precalculus Homework

01/31/16

Find the nth-degree polynomial function with real coefficients satisfying n=4, -3,1/4,2i are zeros; f(2)=-144
Find the nth-degree polynomial function with real coefficients satisfying the given conditions. n=4, -3,1/4,2i are zeros; f(2)=-144
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Precalculus Homework

01/31/16

determine the formula for the set of all points
a)Determine a formula for the set of all points, P(x, y), whose distance from (−2,2) is 9. (Your answer should not have a square root in it.) b)This is a circle of radius _____ , with a center at... more
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Precalculus Homework

01/31/16

simplify the expression
Simplify the expression completely.6(x + h)^2− 7(x + h) − (6x^2− 7x)                     h
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Precalculus Homework

01/31/16

SImplify the expression?
Simplify the expression into a single fraction of the form Numerator/Denominator ,and determine the numerator and the denominator as functions of u. (You do not have to factor the numerator and do... more
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Precalculus Homework Functions Word Problem

01/31/16

Express the total cost of the cylinder as a function of r?
The volume of the cylinder is 3900 cubic feet. The bottom of the cylinder is reinforced steel, costing $35 per square foot, whereas the sides and top cost just $10 per square foot. Express the... more
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Precalculus Homework Area Of Rectangle

01/31/16

Express the area of the sidewalk as a function of x.
A garden is in the shape of a rectangle. A sidewalk of width 5 ft surrounds the garden. One side of the garden has length 20 ft. The other side has length x. Express the area of the sidewalk as a... more
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Precalculus Homework

01/30/16

Express the total area A enclosed by both squares (in sq.in.) in terms of x.
A piece of wire 13 inches long is cut into two pieces and each piece is bent into a square. If x denotes the length (in inches) of the first piece, express the total area A enclosed by both squares... more
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Precalculus Homework

01/30/16

Express the product of the two numbers as a function of x.
The sum of two numbers is 85. Let x denote one of the numbers. Part 1: Express the product of the two numbers as a function of x.   Part 2: Express the sum of the square roots of the two numbers... more
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Precalculus Homework

01/27/16

Express the number in the form a/b, where a and b are integers.
Express the number in the form a/b, where a and b are integers. 4-²/ 5-²  
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Precalculus Homework Functions Word Problem

01/27/16

Write a formula for f(x)
Let f(x) be defined on the positive real numbers as follows:Start with a number x.Take the square root of the number and add 5 more than the number you started with.Square the result and add 7 more... more
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Precalculus Homework

01/27/16

Let f(x) = 7 x2 + 6 . Evaluate f ( 1 + v 2 ) . IMPORTANT: Provide an exact expression, not a decimal approximation
I keep getting 27+ 7√2 but this is incorrect.
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Precalculus Homework Word Problem

01/26/16

The population dynamics of many fish are characterized by extremely high fertility rates among adults and very low survival rates among the young.
The population dynamics of many fish are characterized by extremely high fertility rates among adults and very low survival rates among the young. A mature specimen of a particular fish may lay as... more
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01/25/16

Please help me with function decomposition? Pre-Calculus?? Very confused!
1. Given the composition h(x)=f(g(x)) If h(x)=(x+3)^8 and f(x)=x^8, find the function g(x).           2. Given the composition h(x)=f(g(x))If h(x)=1/x+3 and g(x)=x+3 , find the function... more
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Precalculus Homework Pre Sale homework

01/19/16

50-e^-.02x=200
Have to solve for x. 
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Precalculus Homework

01/19/16

Force of 90lb acts on An object at an angle of 55 degrees. A 2nd force of 100lbs acts in object at angle of -60 degrees. Find direction & magnitude of force
Need help on this please
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Precalculus Homework

01/19/16

Find direction angle of vector <-2,-7>. Give direction angle as an angle in [0degrees,360degrees) rounded to the nearest tenth.
I need help on this part of my homework.
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Precalculus Homework

01/18/16

If a sample of an element has a mass of 7.7grams and contains 0.285moles, what is the element?
I need help on this. I am clueless
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01/13/16

Graphing Trig. Functions & Inverses
Evaluate In degrees:   1. Sin^-1 (-2pi)    2. arctan (- square root 3/3)   3. sin (cos^-1(- square root 3/2)      Evaluate in Radians   1. Arctan (-1)   2. cos^-1 (- 1/2) 
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Precalculus Homework

01/10/16

I'm not sure which law or how I'm supposed to solve this problem (law of sine or law of cosine)
A restaurant is located at the intersection between Walker Street and Throop Street. Heather's house is on Walker Street and it is 2.6 miles from the restaurant. Patricia's house is on Throop... more
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Precalculus Homework Compound Interest

01/07/16

I don't quite understand what I'm doing wrong with this question. Please help.
Hannah would like to make an investment that will turn 6000 dollars into 25000 dollars in 8 years. What quarterly rate of interest, compounded four times per year, must she receive to reach her... more
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Precalculus Homework

01/06/16

The "minute hand" of a clock is 5 inches long.
What is the angular speed of the "minute hand" in rad/min?   How many inches does the tip of the minute hand travel each min?   I need exact answers for both, and please show work!
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