Saturday

July 4, 2015

July 4, 2015

**Algebra 2**

Solve the system: y^2 - 4x^2 = 4 and y = 2x. (-1,-2)?
*Saturday, May 18, 2013 by Lily*

**Algebra 2**

Find the exact solutions of x^2 - (y - 12)^2 = 144 and y = -x^2. No solution?
*Saturday, May 18, 2013 by Lily*

**Algebra 2**

Write the expression 13m^8 - 3m^4 + 4 in quadratic form if possible. m^8?
*Saturday, May 18, 2013 by Lily*

**Algebra**

Calculate elements the listed element for the product matrix. matrix[1, 2, -3_3, 4, 0_-9, 7, 8_9, 3, 2]Xmatrix[11, 7, 9, -5_5, -9, 1, 6_4, 2, -3, -8] Can someone please help me with this. I'm desperate.
*Saturday, May 18, 2013 by Brianna*

**Algebra**

Dawn averages a speed of 18 miles per hour during her bike race. The race is 90 miles long. Define a variable for the number of hours Dawn has been racing and use this variable to write an expression for the number of miles left in the race.
*Friday, May 17, 2013 by suezette*

**algebra**

3.Your parents allow you to play video games for no more than 8 hours a week. You have already played for 2.5 hours this week. Write and solve an inequality that represents how much more time you can play video games this week.
*Friday, May 17, 2013 by me*

**Algebra**

The volume of a rectangular solid is 250 cubic centimeters. If its length is tripled, its width is halved, and its height is quadrupled, what is the new volume, in cubic centimeters?
*Friday, May 17, 2013 by Jonah*

**Algebra 2**

Solve the system, 4x^2 + y^2 = 20 and y = 4x. (square root of 10/2, 2 square root of 10)?
*Friday, May 17, 2013 by Lily*

**Algebra 2**

Find the exact solutions of x^2 - (y - 6)^2 = 36 and y = -x^2. (0,0), (6,6), and (-6,6)?
*Friday, May 17, 2013 by Lily*

**algebra**

how many turn around points are in the function f(x)=(x-1/3)^2(x-2)^3
*Friday, May 17, 2013 by sheila*

**algebra**

find the equation of the line that is perpendicular to y=-3x-6; (-1,5)?
*Friday, May 17, 2013 by Sherry*

**Algebra**

Write linear equation in form y=mx+b given this condition parallel to y=-1/2x +1, through (4,2)?
*Friday, May 17, 2013 by Sherry*

**algebra**

what is the solution set of -4x2=5x+9? p.s. its suppose to be -4xsquared=5x+9
*Thursday, May 16, 2013 by Geli*

**Algebra**

Suppose that x and y are positive real numbers satisfying x^2 +y^2 =4xy . Then x−y/x+y can be written as ãa/b, where a and b are coprime positive integers. Find a+b .
*Thursday, May 16, 2013 by Jimmy*

**Algebra**

Find the number of real solutions of the system of equations. x^2−y^2=z y^2−z^2 =x z^2−x^2 =y
*Thursday, May 16, 2013 by Anonymous*

**Algebra**

The length of a rectangle is (x+2) inches. The width of the rectangle is (x+1) inches. Write an equation that can be used to determine the area (A) of the rectangle in terms of x. What is the value of x if the area of the rectangle is 56 square inches?
*Thursday, May 16, 2013 by Amber*

**Algebra**

Jan is a photographer. She earns $42.50 for each picture she sells. It costs Jan $850.00 per month to maintain her photography lab. Write an equation that represents the relationship between Jan's monthly profit (P) and the number of pictures (x) she sells. What does the x...
*Thursday, May 16, 2013 by Amber*

**Algebra**

The perimeter of a rectangular garden is 35 feet. The length of the garden is 1 foot more than 2 times its width. Write an equation to represent the perimeter of the garden in terms of its width (w). What are the length and width of the garden in feet?
*Thursday, May 16, 2013 by Amber*

**Algebra 2**

The graph (x - 2)^2 + 3(y - 2)^2 = 25 is the graph of a(n) ________. Ellipse?
*Thursday, May 16, 2013 by Lily*

**Algebra 2**

The graph of x^2 + y^2 = 6x + 81 is the graph of a(n) _______. Circle?
*Thursday, May 16, 2013 by Lily*

**Algebra 2**

The graph of x^2 - 12y = 12x - 12 is the graph of a(n) ________. Parabola?
*Thursday, May 16, 2013 by Lily*

**college algebra**

graph y=-(1/2)x+1, (4,2) with steps to solve
*Thursday, May 16, 2013 by topaz *

**college algebra**

graph y=-(1/2)x+1, (4,2) with steps to solve
*Thursday, May 16, 2013 by topaz *

**Algebra**

Suppose x and y are real numbers and 4x+3xi+yi−43=2y+2xi−x+2yi+5i . What is the product xy .
*Wednesday, May 15, 2013 by Andrew*

**Algebra**

What is the largest prime factor of 5^8 +2^2 ?
*Wednesday, May 15, 2013 by Sarah*

**Algebra **

Lisa is cutting carpet for a rectangular room. The area of the room is 324ft^2 . The length of the room is 3 feet longer than twice he width. What should the dimensions of he carpet be?
*Wednesday, May 15, 2013 by Codey*

**College Algebra HELP**

Use the seven step method described in the book to graph the following rational function f(x)=(2x^2+x-3)/(2x^2-7x) 1) Determine the symmetry of the function 2) Find the y-intercept 3) Find the x-intercept 4) Find the vertical asymptotes 5) Find the horizontal asymptotes 6) ...
*Wednesday, May 15, 2013 by Rosie*

**Algebra 1**

For each event,circle the most appropriate term. 21. Six friends go to a movie.How many ways can they sit in a row of six seats? counting principle,combination,factorial, or permutation
*Wednesday, May 15, 2013 by Janet*

**algebra financial polynoomials**

Compounded annually, P dollars is invested at annual interest rate r for 2 years. If the interest is compounded annually, then the polynomial P (1+r)^2 represents the value of the investment after 2 years. Rewrite the expression without the parentheses. Evaluate the polynomial...
*Wednesday, May 15, 2013 by tia*

**College Algebra**

How do you work out this problem? 3x3 + 2x2 + 3x+2 I showed three different people my work an they said I did it wrong I am so confuse.
*Wednesday, May 15, 2013 by Crystal *

**algebra**

is this a arithmetic, or geometric sequence -96,-48,-24,-12,......
*Wednesday, May 15, 2013 by tammy*

**algebra 1**

Compare y=1/(x+3)+3 and y=1/x
*Wednesday, May 15, 2013 by Jan*

**Algebra 2**

The graph of 11x - x^2 - 4y^2 = 2y - 16 is the graph of a(n) ________. a. circle b. ellipse c. hyperbola d. parabola C?
*Wednesday, May 15, 2013 by Lily*

**Algebra 2**

The graph of 5x - 9y^2 = 12 - 4y is the graph of a(n)______. a. circle b. ellipse c. hyperbola d. parabola C?
*Wednesday, May 15, 2013 by Lily*

**algebra**

Need help with 3 problems on page 167 X+2y=6 5x+3y=2 4x-3y=-20 -x-8y=5 5x+6y=-11 3x+y=-4
*Tuesday, May 14, 2013 by dee*

**College Algebra! help!**

Consider the following functions f(x)= (7x+8)/(x+3) and g(x)= (3x-8)/(7-x) (a) Find g(g(x)) (b) Find g(f(x)) (c) Determine whether the functions f and g are inverses of each other.
*Tuesday, May 14, 2013 by Rosie*

**College algebra**

Use the rational zeros theorem to find all the real zeros of the polynomial function. Use the zeros to factor f over the real numbers f(x)=9x^4+28x^3+66x^2+196x+21 Find the real zeros of f Use the real zeros to factor f f(x)=
*Tuesday, May 14, 2013 by Alex*

**algebra**

A women has a ladder that is 13 feet long.if she sets the base of the ladder on level ground 5 feet from the side of a house,how many feet above the ground will the top of the ladder be when it rests against the house?
*Tuesday, May 14, 2013 by kirandeep*

**algebra **

an 18-foot ladder leans against the wall of a building. the base of the ladder is 9 feet from the bulding on level ground.how many feet up the wall,to the nearest tenth of a foot,is the ladder?
*Tuesday, May 14, 2013 by kirandeep*

**Algebra**

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 1,500 + 200 ln a (a ¡Ý 1)How many units are sold after spending $1,000? (Round your ...
*Tuesday, May 14, 2013 by Jim*

**algebra**

The wheel in a bicycle has a diameter of 2 feet. if the wheel is turning at 50 rpm (revolutions per minute), how far, in feet, will the bicycle travel in 20 minutes?
*Tuesday, May 14, 2013 by Aimie*

**Algebra PleaseHelppppppppp**

For how many positive integers 1≤k≤1000 is the polynomial fk(x)=x^3+x+k irreducible?
*Monday, May 13, 2013 by Mathslover*

**Algebra Please Help**

Find the sum of integers c for all triples of integers (a,b,c),a≤b≤c, that satisfy the system of equations a^2−bc=91 b^2−ac=91 c^2−ab=91 Details and assumptions If a number c appears in several different triples (a,b,c), it must be counted with ...
*Monday, May 13, 2013 by Mathslover*

**Algebra (factorial)**

Evaluate gcd(19!+19,20!+19). Details and assumptions The number n!, read as n factorial, is equal to the product of all positive integers less than or equal to n. For example, 7!=7×6×5×4×3×2×1.
*Monday, May 13, 2013 by Mathslover*

**Algebra Please Help**

Determine the last three digits of 2^5+3^5+4^5+......+10,000,000^5 + 2^7+3^7+4^7+......+10,000,000^7
*Monday, May 13, 2013 by Mathslover*

**Algebra Please Help**

What is the largest prime factor of 5^8+2^2?
*Monday, May 13, 2013 by Mathslover*

**Chemistry**

I am dealing with the integrated rate laws. Can somebody please help me with my algebra? First order ln(A)=-kt+ln(B) solve for t,and k and B Second order 1/(A) = kt+1/(B) solve for k and t and B
*Monday, May 13, 2013 by Agnes*

**Math**

We have an important chemsitry test due and I want to make sure that I do not mess up on my algebra. I am dealing with the integrated rate law, but my question is purely algebraically in nature. I hope, somebody can help me. 1) ln(A) = -kt+ln(B) solve for t solve for k solve ...
*Monday, May 13, 2013 by Yasemine*

**algebra ----**

#27 can you check this: -5x (x-4) i got: -5x +20 #28 (y^2 - y -1) + (y^2 + Y + 3) i got: 2y ^2 + 2 #29 (x^2 + 1) - (2x^2 + x -1) i got: -x^2 - x +2
*Monday, May 13, 2013 by marko*

**algebra - **

#21 -can you help me solve this equation: 3x^2 (2x - 2) i keep getting: 6x ^2 -6 #22 can you check this one: (2x ^2) (6x^2) i got 12x #23 can you check this one: (4m^2 + m -2) + (-m^2 - 3m) i got: -4m ^2 + 4m-2 #25 can you check this one: (3x^2 -x -1) + (2x^2 + 2x -1) i got: -...
*Monday, May 13, 2013 by marko*

**College Algebra**

For the given functions f and g, find the following and state the domain of each result. f(x)=√x;g(x)=7x-2 (a)(f*g)(x)= What is the domain of f*g? (b) (f/g)(x)= What is the domain of f/g?
*Monday, May 13, 2013 by Alex*

**college algebra i**

x is less than or equal to 1 and greater than -5. how do i write this
*Monday, May 13, 2013 by topaz*

**college algebra I**

68 is the product of Vanessa's age and 4. use the variable v to represent Vanessa's age. How do I write this expression
*Monday, May 13, 2013 by topaz*

**Algebra 2**

Solve for x under the assumption that x > 0. Enter your answer in interval notation using grouping symbols. x - (10/x) < 9 I need someone to show me how to work through this type of problem, I don't understand it.
*Monday, May 13, 2013 by Tristan*

**Algebra**

5/2 DIVIDED BY 4/15=
*Monday, May 13, 2013 by Anonymous*

**algebra**

You are using 0.05 gallons per mile of a SUV gas tank that holds 16 gallons. Note: this equation has a negative slope (m). Use x-values: 0, 160, and 320. I think the problem should be y=.05x+16 Confused since the teacher says it has a negative slope.
*Monday, May 13, 2013 by caitlin*

**Math (Algebra) (Distance Between 2 Lines)**

If real numbers a and b satisfy a^2 + b^2 = 64, what is the distance between the lines ax + by = 1 and ax + by = 417 ?
*Monday, May 13, 2013 by Tom*

**algebra.. HELP ME!!!**

Let f(x) be a polynomial such that f(f(x))−x^2=xf(x). Find f(−100).
*Monday, May 13, 2013 by flex*

**math algebra**

Determine the last three digits of 2^5+3^5+4^5+......+10,000,000^5 + 2^7+3^7+4^7+......+10,000,000^7
*Monday, May 13, 2013 by joydeep*

**algebra**

Find the largest possible integer n such that there exists a non-constant quadratic polynomial f(x) with integer coefficients satisfying f(1)∣f(2),f(2)∣f(3),…f(n−1)∣f(n). Details and assumptions: ~For (possibly negative or zero) integers m ...
*Monday, May 13, 2013 by flex*

**algebra!!! please help...**

Let f(x) be a polynomial such that f(f(x))−x^2=xf(x). Find f(−100).
*Monday, May 13, 2013 by glo*

**algebra!!!! please help me!!!!**

Find the number of real solutions of the system of equations. x^2−y^2=z y^2−z^2=x z^2−x^2=y
*Monday, May 13, 2013 by glo*

**linear algebra**

solve using gauss jordan 10y − 4z + w = 1 x + 4y − z + w = 2 3x + 2y + z + 2w = 5 −2x − 8y + 2z − 2w = −4 x − 6y + 3z = 1
*Monday, May 13, 2013 by DON*

**Math (Algebra)**

If positive integers x and y satisfy the equation xy−5x−10y+43=0, the sum x+y is constant. What is the value of x+y?
*Monday, May 13, 2013 by Tom*

**Math (Algebra) Remainder Theorem**

What is the remainder when f(x)=x^2220 + x^2215 + x^2210 + … + x^10 + x^5 + x^0 is divided by x^4 + x^3 + x^2 + x + 1? Note that: x^0 = 1
*Monday, May 13, 2013 by Tom*

**algebra**

Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine,2.44 cross 10^(−5)watts/cm2.
*Sunday, May 12, 2013 by Tierra*

**College algebra**

The radioactive element has a half-life of about 28 years and sometimes contaminates the soil. After 47 years, what percentage of a sample of the elements remain?
*Sunday, May 12, 2013 by Taylor*

**College algebra**

Use the properties of logs to write the expression as one log: 8log(base 5)4th square root of x minus 4log(base 5) x
*Sunday, May 12, 2013 by Taylor*

**Math (Algebra) (Distance Between 2 Lines)**

If real numbers a and b satisfy a^2 + b^2 = 64, what is the distance between the lines ax + by = 1 and ax + by = 417 ?
*Sunday, May 12, 2013 by Tom*

**Algebra 2**

Find the equation of the asymptotes for the hyperbola defined by the equation: ((y + 4)^2 / 36) - ((x - 3)^2 / 25) = 1
*Saturday, May 11, 2013 by Tristan*

**algebra 2**

gary has walked 305 meters, and continues at a rate of 1 meter per second. Mary has walked 113 meters, and continues at a rate of 3 meters per second. In how many seconds will they have traveled the same distance.
*Saturday, May 11, 2013 by gege*

**algebra 2**

which point is a solution to the following systems of inequalites -4x+ 5y> 20 8x + 3y < 24
*Saturday, May 11, 2013 by gege*

**Math Algebra**

k so when i posted this earlier, i didnt understand how to do it the way that writeacher showed me so can someone else help, thanks Max spends 60% of his pay on car expenses and 12% on fast food. If Max spends a total of $518.40 per month, what is his monthly pay? (let x be ...
*Saturday, May 11, 2013 by Hanah*

**algebra**

The number of gallons of water, y , in a tank after x hours may be modeled by the linear equation y = 800 - 50x . Which of the following statements about the tank is true? It is filling at a rate of 50 gallons per hour. • It is emptying at a rate of 800 gallons per hour...
*Saturday, May 11, 2013 by lisa*

**algebra**

The number of gallons of water, y , in a tank after x hours may be modeled by the linear equation y = 800 - 50x . Which of the following statements about the tank is true? It is filling at a rate of 50 gallons per hour. • It is emptying at a rate of 800 gallons per hour...
*Saturday, May 11, 2013 by lisa*

**Math **

Max spends 60% of his pay on car expenses and 12% on fast food. If Max spends a total of $518.40 per month, what is his monthly pay? (let x be his pay, use algebra)
*Saturday, May 11, 2013 by Hanah*

**algebra**

Find a simplified value for x by inspection log9 81 = x
*Saturday, May 11, 2013 by shel*

**Math (Algebra)**

An elevator named L in "63 Building" in Seoul is notorious for its low speed. It takes 3 seconds for L just to move one floor. It takes another 20 seconds for it to have its door open and close automatically. What is even more frustrating, is that the elevator ...
*Saturday, May 11, 2013 by Shin*

**Math algebra**

Let N be the sum of all positive integers q of the form q=p^k with prime p, such that for at least four different integer values of x from 1 to q, x^3−3x≡123(modq). What are the last 3 digits of N?
*Saturday, May 11, 2013 by Bob*

**Algebra**

A car rental agency advertised renting s car for %26.95 per day and @0.34 per mile. If David rents this car for 4 days how many whole miles can he drive on a $150 budget?
*Friday, May 10, 2013 by Mary*

**algebra**

what expression is equivalent to 4z+3x
*Friday, May 10, 2013 by Anonymous*

**algebra **

(s) is at least 5 times as great as the number of bieber fans (b)
*Friday, May 10, 2013 by jj*

**algebra**

(a) of 3000 she makes 55 an hour (h) and how many hours will it take to have an account balance of 3220 a: a=3000+55h;3220 b: 3000+55h =a:5h c: 55+3000h= a=4hours d:a=3000 +55h;4hour
*Friday, May 10, 2013 by jj*

**algebra 2**

A rubber ball is thrown 20 feet into the air. If it rebounds 3/5 of the height, how far will it have traveled after the fifth bounce?
*Friday, May 10, 2013 by EDNA*

**algebra 2**

A rubber ball is thrown 20 feet into the air. If it rebounds 3/5 of the height, how far will it have traveled after the fifth bounce?
*Friday, May 10, 2013 by Sasha*

**algebra**

What is the x,y, and z quardinates of 2x+2y+3z=3 3x+y+4z=3 X-y-2z=3
*Thursday, May 9, 2013 by awesomesauce*

**Algebra 2**

Solve the equation |2x − 5| £ 9
*Thursday, May 9, 2013 by Tristan*

**algebra 1**

Graph each function;identify the domain and range;and compare the graph with the graph of y=1/x. 1.y=-10/x Domain: Range: Compare: 2.y=1/(x+3)+3 Domain: Range: Compare:
*Thursday, May 9, 2013 by Jan*

**Algebra 2**

I need help trying to solve trigonometric identity problems I just need help if someone could break it down step by step how to solve for: if cos of theta is -3/5 find csc of theta
*Thursday, May 9, 2013 by michelle*

**Algebra 2**

A shot put champion releases the shot from 6ft above the ground. The path of the shot is modeled by: h(d)=-0.02d^2+1.11d+c. How far does the shot travel before it hits the ground? h is approximate height (in feet), d is the horizontal distance traveled (in feet), and c is the ...
*Thursday, May 9, 2013 by Cassie*

**algebra 1**

Madison is making a vinaigrette for her catering service using olive oil that costs forty cent per ounce and apple cider vinegar that costs twenty-five cents an ounce.The ideal batch of vinaigrette has 25% vinegar.If she has already combined 3 cups of vinegar and 1 cup of oil,...
*Thursday, May 9, 2013 by Jan*

**algebra**

1) how many billions of years will it take 1000 grams of uranium-238 to decay to just 125 grams? 2) a researcher had 37.5 g left from a 600 g sample of sulfer-35. how many half-lives passed during that time? 3) look at problem 2. how many days passed during that time?
*Thursday, May 9, 2013 by anon*

**Algebra**

An advertising agency conducted a survey and found that the number of units sold, N, is related to the amount a spent on advertising (in dollars) by the following formula: N = 6,500 + 400 ln a (a ≥ 1) How many units are sold after spending $1,000? (Round your answer to ...
*Thursday, May 9, 2013 by Larry*

**Algebra 1**

y^3(2y-6)+7y^4 PLEASE HELP!!
*Thursday, May 9, 2013 by Alycia*

**Algebra**

A test consist of 15 multiple choice questions, 12 true-false questions and 10 fill in the bland questions. you got 8 questions wrong. what percent of the answers were correct?
*Wednesday, May 8, 2013 by Kevin*

**Algebra**

Square root 18 + (3/square root 2)
*Wednesday, May 8, 2013 by Brittany*

**algebra 2**

A dog kennel is to be constructed alongside a house using 60 m of fencing. Find the dimensions that will yield the maximum area. How do you solve this problem?
*Wednesday, May 8, 2013 by Rachel*

**Algebra**

It is 74.4 miles from Dwane and Patti's house to Martha's house. Patti leaves home at 10:00 and drives toward Martha's house. Dwane and Martha set off half an hour later from their own houses and drive toward the other's house. The average speed of the three ...
*Tuesday, May 7, 2013 by Need help fast*

**Algebra**

Find the coordinates of the vertex and determine whether the graph opens up or down. y=-x^2+x-5
*Tuesday, May 7, 2013 by Sabrina*

**Algebra**

Square root 18 + 3/square root 2
*Tuesday, May 7, 2013 by Brittany*