Mathematics

How to solve a few linear algebra vector questions

Hi, I have a few questions I need help in linear algebra involving vectors. 1. Given a vector equation r(t) = (3-4t)i+(0+4t)j+(-2+2t)k , rewrite this in terms of the symmetric equations for the line.

Can someone help me find the equation for this graph

The line is intercepting on the x axis at (-2,0) (1,0) and (5,0) and a y intercept of (0,-4) you have to draw the graph first So how do you find the equation The answer is suppose to be -2/5 (x+2)(x-

Find the number of integers

Find the number of integers in [1...10000] which are multiples of 2 or multiples 3 or not multiples of 5. Is this the correct way to solve it? Let Ai be the set of multiples of i in [1...10000]. |A

I need help with a 6th grade math problem

The forecast for tomorrow says that there is a 37% chance of rain. Describe the complimentary event and predict its probability. Please help me figure this out and tell me how you get the anawer. Than

How do you multiply a whole number by a radical, and how do you add a whole number and a radical

How do you multiply a whole number by a radical? Also, how do you ADD a whole number with a radical? Thanks!-You just write the number next to the radical when multiplying. For example... 5*√x = 5√x

Find the standard form????????????

Find the standard form of the equation of the parabola with the given characteristics. Vertex: (8, -5); focus: (8, -3) thanks-Since the vertex is lower on the y axis than the focus, and x is the sa

Patti works as a waitress. She earns $4.50 per hour plus tips and serves an average of 6 customers per hour..

Patti works as a waitress. She earns $4.50 per hour plus tips and serves an average of 6 customers per hour. If Patti earned $108 during an 8-hour shift, which amount best represents the average tip p

How can we show S is at most coumtable

Suppose the real valued f is monotone on an interval I. Let S be the set of points of I where f is not differentiable. Show S is at most countable. Thank you.-I think this is actually false.Theres a

What is an 81 sided object called anyway

My son has a bouncy rubber thing which hes counted the sides of, and found 81, it has lots of three sided points all over it and flashes when you drop it. He bets me I cant find out what it is called

10 POINTS EASIEST MATH Q EVER

1. a gumball machines conatins 6 yellow gumballs and five orange gumballs. what is the probability at random and without replacement of obtaining two yellow gumballs? please shoiw me how 2.the probabi

System of equations? BEST answer to first correct

x - 2y - z = -4 -x + 6y - 3z = 12 2x - 11y + 5z = -22 Please solve for x, y, and z. Thank you vedddy much!-x = 0 y = 2 z = 0 Rearrange 2nd equation -x + 6y - 3x + x - 12 = 12 + x - 12 6y - 3z - 12 = x

Help..Completing the square problem

Solve 2x^2-12x+4=0 by competing the square, expressing the result in simplest radical form-2x^2 -12x +4 =0 2(x^2 -6x) = -4 2(x^2 -6x +3^2 -3^2) = -4 2(x^2 -6x +9) + 2(-9) = -4 2(x-3)(x-3) -18 =

Sequences :/ I need help

a) 1, 5, 9 ,13, 17 Find the 50th term? How do i do that in a quick way.. :/ Thanks-Each term has a common difference of 4 1 = 4 * 0 + 1 5 = 4 * 1 + 1 9 = 4 * 2 + 1 13 = 4 * 3 + 1 The n-th term ca

If f(x) = 7 + 2x - 5x^2, find the equation of the line tangent to the curve f( x ) at x=-5

The tangent line y= ?????-f(x) = 7 + 2x - 5x^(2) Given that x = - 5, plug that into the f(x) function here to determine the y - value. f( - 5 ) = y = 7 + 2 ( - 5 ) - 5 ( - 5 )^(2) = 7 - 10 - 125 = -

How to solve exponential equation: (6.76)^-7x/9=13

Ive been checking on a few of your questions... but to my knowledge and my studies syllabus, I dont know whats an exponential equation xD but i know how to solve though... first, please state clearly