7,188 Answered Questions for the topic Math Help

Math Help

06/10/18

2 solution at 2xsquare-3x-9=0 please

i need help with this mathemathic question
Math Help

06/09/18

what pair numbers follow 041

mah paris

06/09/18

Is anyone willing to help I have submitted this twice and receive no feedback

A big-brand-name dishwasher, which costs $800.00, has a 20% chance of needing to be replaced in the first 2 years of purchase.  A two-year extended warranty costs $112.10 on a dishwasher.  What is... more
Math Help

06/08/18

Let f(x) = x2 + 6 and g(x) = x + 8x . Find ( g o f)(­ -7)

Let f(x) = x2 + 6 and g(x) = x + 8x . Find ( g o f)(­ -7)

A hotel manager found that his gross receipts for the​ day, including a 5​% sales​ tax, were ​$4281.90. Find the amount of sales tax collected. solve

I need help solving this question i am very confused and would appreciate all the help i can get

06/07/18

Use algebra to solve for X in the matrix.

This is a 2x2 matrices problem. However, I am unable to type the matrices symbol in so I wrote it out.   Given A = 7  ,   x (top row) 15  ,  22 (bottom row). and the determinant for matrix A is... more

06/07/18

Use the function to answer the following questions:

Use the function f(x) = x^2-2x-8 / x^2-9 to answer the questions:   1.) Find all zeros of f(x):     2.) Find any y-intercepts of f(x):     3.) Find the equation(s) of all vertical... more

06/07/18

Find all values of x

1.) Find all values of X that satisfy the equation sin^2(x)=2cos(x)+2 in the interval 0≤x<2pi           2.) Find all values of x in the interval 0≤x<2pi that satisfy the equation... more

06/07/18

Given f(x) find:

Given f(x) = 1/x-2 and g(x) = sqrt(x+3):   1.) Find f(g(x)) and DO NOT rationalize the denominator:         2.) Find the domain of f(g(x)):    

Given the function, find f^prime(x)

given the function  f(x) = 2x^4-3x^2+5x-2, find f^prime(x).   (i wasn’t sure how to type the prime symbol)

Evaluate this:

Evaluate: cos 5pi/4 + cos (-pi/6)
Math Help

06/06/18

How long was Manuel on the train

Manuel traveled 40 hours nonstop to Mexico, a total of 3,800 miles. He took a train part of the way, which averaged 110 mph, and then took a bus the remaining distance, which averaged 50 mph. How... more
Math Help

06/06/18

how many miles did she​ drive?

A car rental cost $70 per day, for the first 250 miles, plus $0.20 for each additional mile. If Sonya's rental cost was $116 for a one-day rental, how many miles did she drive?

06/06/18

Prove this identity:

prove the following identity: 2sin^2(x)/sin2(x)+cot(x)=sec(x)csc(x)   please note that the cot(x) is not with the sin2(x) as a part of the denominator. The 2sin^2(x)/sin2(x) is its own fraction.... more
Math Help Math Precalculus Cosine

06/06/18

Prove the following identity:

prove the following identity:   2sin^2(x)/sin2(x)+cot(x)=sec(x)csc(x)

06/06/18

Find each of the following:

given the Function,   f(x) = 3sin(2x-pi/4)   find each of the following:    amplitude:  phase shift: period:   show any work.

State the range

If f(x) = 3x+2 / x^2+6x+9, State the range of f^-1(x).

06/06/18

Find the coordinates of the hole:

Find the coordinates of the hole of  f(x) = x+1/x^2-4x-5   Show all work.

06/05/18

How much faster is Train 1 than Train 2?

Two trains, on opposite sides of parallel tracks, leave their stations at the same time and are headed towards each opposing station. Train 1 is faster than Train 2, and when they pass each other... more
Math Help Math Word Problem

06/05/18

A ball has a diameter of 20inches what is the volume of the ball give your answer to the nearest cubic inch

I would like to know the answer for this math problem because I've tried and I kept getting another answer than my teacher answer•
Math Help

06/04/18

What is the volume of the package

The sum of the length, width, and height of a rectangular package is 96 inches. If the length is 4 inches longer than five times the height and the width is 4 inches shorter than twice the height,... more

06/04/18

The scale on a map shows that 5 centimeters = 2 kilometers. Part A What number of centimeters on the map represents an actual distance of 5 kilometers? Show y

Rest of the question: The scale on a map shows that 5 centimeters = 2 kilometers.Part AWhat number of centimeters on the map represents an actual distance of 5 kilometers? Show your answer and... more
Math Help

06/04/18

if i have 1/2 a gallon of ice cream how many 1/16 gallon servings can i make

i have 1/2 gallons of ice cream how many 1/16 gallon servings can i make
Math Help

06/04/18

6 people are running a race. How many ways can they finish the race?

I am looking for some help on my math homework which I can use on my open note quiz this upcoming friday. 

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