10/25/19

arithmetic sequence

find the sum of the first 100 terms of the arithmetic sequence a1=15 and a100=307
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10/23/19

If fn = n^2, what is the sum of the first four values of n, n = 1, 2, 3, and 4?
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10/11/19

Simplifying exponential functions
What rules would I have to refresh on to learn how to simplify this or can someone provide the process for this.
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09/20/19

how do you solve a linear equation with a variable in the fraction
8 - r/3 = 11, how wound you get the r alone, or off of the 3?
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07/06/19

Roger bought some $0.34 stamps and some $0.20 stamps, and spent $2.90. How many of each type of stamp did Roger buy?
Roger bought some $0.34 stamps and some $0.20 stamps, and spent $2.90. How many of each type of stamp did Roger buy?For the most part I figured: 0.34x + 0.20y = $2.90Since it doesn't signify the... more
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01/24/19

Determine the piecewise representation of​ f(x) below:
|3x-6|Equation A if x>=aEquation B if x<bI do not understand how to create the formulasi did3x-6=0x=2and i believe the domain of a would be (-infinity, 2)and domain of b would be (2,... more
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11/01/18

What is the lcm of 3 and 4
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08/18/18

Find all integers x,y.
Find all integers x,y satisfying (x-y)^2+2y^2=27
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05/14/18

How to simplify trigonometric equations? (see details of question!)
This is the questions I'm stuck on:    Solve algebraically: f(x) = g(x) when f(x) = 4sin(2x)cos(2x)+2 and g(x)= 4sin(3x)sin(2x) + 2   1. I equated the equations          4 sin(2x)cos(2x)+2... more
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10/09/17

Finding perimeter of square
How would I find the perimeter of a square when one side is labeled 3x and another side is labeled 5x-8?
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05/18/17

Quadratic Fraction
If one of the solutions to the equation: x2+3x+1=0, is a, then find 1/(a2+3a+10)
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03/06/17

Solving in precal
Cos3x=cosx
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03/01/17

what is distance on the number line between the numbers 6 and 11
i need help with this problem
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02/28/17

chris offered $600 for a couch and chair.the offer includes 8% sales tax. what would be to the nearst dollar before tax?
I want to know how to solve this problem? and hopefully you could help me
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02/27/17

linear inequality question
This is a application of linear programming question and I am unsure of how to properly set up the equations.    A factory that makes statuettes is trying to maximize its income. Their two... more
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02/16/17

cumulative distribution function
Consider a random variable X whose distribution function (cdf) is given by:FX(x) =0 if x < −20.1 if − 2 ≤ x < 1.10.3 if 1.1 ≤ x < 20.6 if 2 ≤ x < 31 if x ≥ 3(a) Give the probability... more
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02/06/17

Two numbers have a difference of 20. When the squares of the numbers are added together, the result is a minimum. What is the larger of the two numbers?
I have no idea how to get to the answer, please help! Thank you.
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01/09/17

Disk method question
Hi, the question says: find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the line x=5 given functions: y=x, y=0, y=4, x=5 The problem... more
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01/05/17

Two parallel lines are crossed by a transversal? 115 x ? What is the value of x? x = 45 x = 65 x = 95 x = 115
x = 45x = 65x = 95x = 115
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10/19/16

What is the inverse of f(x)=x^3-6y^2+12x-8
I know to rewrite as x = y3 -6y2+12y-8
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10/15/16

ordered 3/4 ton of topsoil. wants to recieve 1/3 of the oder now. what fraction of a ton of topsoil will michael be recieving?
Michael has ordered 3/4 of a ton of topsoil to enrich his garden. He wants to receive 1/ 3 of his order now (and the rest later when he ahs finished preparing a place for it.) What fraction of a... more
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10/14/16

dilate by c=1/4,center(0,0)
how do i do this 
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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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10/05/16

Story problem help please! Thanks!
An object is projected vertically upward with an initial velocity of v0 ft/sec, and its distance s(t) in feet above the ground after t seconds is given by the formula s(t) = −16t2 + v0t.(a) If the... more
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10/04/16

Rick has 150 fewer stamps than Myra. Together they have collected 500. How many stamps does each person have in his or her collection?
Don't know how to show my son how to set up the problem so he can solve it. 
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