Mathematics

Solution of a 1st order homogeneous difference equation

Givenan+1 - 5 an = 0and a0=2 what is the particular solution? i know its an= 2*5^n but how? :S-a(n+1) - 5a(n) = 0 Characteristic equation: r - 5 = 0.Then r = 5.Thus, a(n) = c1 * 5^n is the general so

How to solve a trigonometry wave height problem

A data buoy measures wave height and transmits the info to a monitoring station.For the minute 11:11 (high tide), wave height can be modeled with the equation y = 3.4 sin ( 2pi/10t) + 3.8 where t is m

Find all points where the tangent line to y= x^3-6x+12 has slope -1

I have no idea where to start...i know the slope of the tangent line is the derivative...so do i take the derivative of the function, equate that to -1?? Thanks for any help..-Thats exactly what you d

Simplifying radicals question!!

simplify radicals to find the product. (3+√x)(2√x +2) I think the answer is 8√x +6+2x-FOIL 3(2√(x)) + 3(2) + √(x)(2√(x)) + 2√(x) = 8√(x) + 2x + 6, as you said. High five! ☺-I came up with the same

Stuck on algebra problem!!!

which statements are correct for these functions? y=log[10]xandy=log[e]x a)the graphs have the same x- intercept b) for all values of x, log[e]x are ≥ log[10]x c) when x>1, both functions are positive

Can someone help with algebra

The magnitude M of an earthquake can be calculated by the formula M=log[10](a/a[0]) where A is the maximum amplitude of a seismic wave and A[0] is a standard amplitude used for comparison. Find the ma

Name the like terms in the expression 5a + 8 - 3a + 11

-3a and 5a?-5a+-3a= -8a 8+11=19 -8a+19 =11a Or u could get 5a+-3a=2a.Because +-= - 8+11=19 2a+ 19 = 21a Those are what I would get from thAt equasion :)-5a and -3a, 8 and 11. The answer to this pr

I need help with equations?? (10 points)

I need help with equations?? (Math)? Is the given number a solution of the equation? 14.) 13 - d = 8:5 15.) c = 2c - 4;8 16.) Write an equation. Is the given value a solution? A farmer sees 56 of his

TI-84 plus silver edition calculater problem

How do i find say the 4 square root of a number not just the normal square root Example: square root of 81 is 9 but i want to find the 4th one like 3*3*3*3= 81. how do i do that on my calc?-Theres th

Two Alg.2 math problems. Need help please!!!!

1.A plane is descending towards a runway in New York. The plane is flying at an altitude of 8 miles and is 175 miles from the runway, as measured from the ground. What angle will the planes path make

Please help i really need it thanks

Hi, everyone, i am havingexam tommorowandihave no ideato do thisproblemourteachertolduswewillhavealot ofproblemssimilarto this oneso pleasehelp me. ifyou can .Apreciousdiamond (densityof4.51g/cm3) is1

Need help - Gr.10 math question

I need help with this Grade 10 math question. A new childrens encyclopedia has 950 pages. Each page contains two background colours for illustrations. Page 8 and every 8th page thereafter has green a

Word Problem Equations

Two planes start from the same airport at the same time and travel in opposite directions. If the first plane travels at an average speed of 240 mph and the second plane travels at an average speed of

What is all the solutions to tan(2x) - tan x=0 and how do you find it

Note that tan (a+b) = (tan a + tan b) / (1 - tan a * tan b).Now if we let a = b = x, then tan 2x = 2 tan x / (1 - (tan x)^2) tan 2x - tan x = 0 (2 tan x)/(1 - (tan x)^2) - tan x = 0 (2 tan x)/(1 - (

How tall is 68.5 inches in feet

I know 68.5 inches is 5.7 feet, but 5.7 feet does not mean 57. I want to know my height in that format.-.7 of 1 foot = .7(12 inches) = 8.4 inches so you are 5 feet and 8.4 inches, you can round down