Mathematics

For nonnegative integers x, y, and z, let [XYZ] be defined by [XYZ] = x(x+z). Which of the following is true

For nonnegative integers x, y, and z, let [X|Y|Z] be defined by [X|Y|Z] = x(x+z). Which of the following is true? (The brackets are just boxes.) A. [4|2|2] = [2|4|2] B. [3|2|2] = [2|3|2] C. [2|3|2] =

Parametric to rectangular

how would you change x = 64cos³θ , y = 64sin³θto a rectangular equation? *its cube theta-take cube roots of each , then square each and add together { x^(2.3) + y^(2/3) = 16 }

Math question for travel

we have a truck that holds 32 gallons and gets 23 miles per gallon on the highway. Lets estimate that the price of gas is $4.00 and we need to travel (one way/ to arrive at destination) 1,350 miles. H

How many red water bottles should the manager order

A sports store sells water bottles in different colors. The table shows the colors of the last 200 water bottles sold. The manager plans to order 1800 new water bottles. How many red water bottles sho

I need help solving word problems

there is 2 word problems that i need help solving. 1) Thelmas average driving speed is 16 miles per hour faster than Kirks. In the same length of time it takes Thelma to drive 290 miles, Kirk only dr

Square roots help please

14. (2 + √2)(2 – √2) 0 2 6 + 4√2 4 + √2 15. √15(√10 - 2) 5√6 - 2√15 √25 - 2√15 √150 - 2 √150 - 2√15 16. Find an exact solution for √5 - 1/x = √5/2. Then find the approximate solution to the nearest

Sum ((x-1)^(2n-2))/((2n-1)!) n=1..infinity

after doing the ratio test, i found that the radius is fromnegative infinity to infinity. is this right?-Yes, the radius is infinite.

If sec x + tan x = 2 . then wat is the value of sec x

1) By identity, sec²x - 1 = tan²x ==> tan(x) = ±√(sec²x - 1) 2) So, ±√(sec²x - 1) = 2 - sec(x) 3) Squaring both sides, (sec²x - 1) = 4 - 4sec(x) + sec²x simplifying, 4sec(x) = 5 Hence, sec(x) =

Please can someone spare me a bit of there time to give me a hand with this question

what is the side of a cube with a volume of (2)^3 x (10-5)^3 dm^3. Thank you-If you have a cube with a given side in dm, the volume is that number cubed. (^3). So the side of a cube is the cube root o

I need help on this math problem please

In a kayak race, the participants must paddle a kayak 900 meters down a river and then return 900 meters up the river to the starting point (a = 900). Susan has correctly deduced that the total time t

Through the law of sines and cosines to solve the following triangles rhomboid

anyone can tell me how to solve the last 5 triangles? http://i55.tinypic.com/2i1fuxy.jpg here is the image-well to solve it your going to need a scientific calculator. which there is one on your com

Differential equations help

Solve the given DE: 1) y = x^2 / y 2) y = x^2 / y(1+x^3) Please include steps so i can see Thank you-1) dy/dx= x^2/y y dy = x^2 dx y^2/2 = x^3/3 +C y = sq.rt.(2/3x^3) + C 2. dy/dx = x^2/y(1+x^3

How do you graph this

f(x) = ax^2 + bx + c can i have an example plz-The equation you have given is the quadratic formula. It is a parabola on a graph. a=the width of the graph b and c are shifts An example ofthis graph w

Precalc probability dice problems

I cant do these for the sake of my life!!! Can someone please explain? A red die and a green die have been rolled.What is the probability of the event? 1.The number on the red die is greater than

Math help with percents

the population of a small town in montreal was 2600. the population increased by 5% one year and 15% in the second year. a) what was the towns population after the first year? b) what was the towns po