Thursday

July 2, 2015

July 2, 2015

**Algebra **

I already posted this question,Steve answered it. I just wanted to clarify my answer. Problem:Find h(x) with terms in order of decreasing degree, if 9x^3-3x+1+h(x)=3x^2-5x+3. Steve: h(x) = (3x^2-5x+3)-(9x^3-3x+1) so, just subtract tghe coefficients of like powers. My answer:&#...
*Thursday, November 13, 2014 by Trish Goal*

**Algebra 2**

Complete the Square Solve each equation x^2+8x+16=16/9 Show work i want to learn!!!
*Thursday, November 13, 2014 by Alicia*

**algebra**

If matt has six times as many sitckers as tom. how many stickers dose he have to give tom so they can have 70 stickers each?
*Thursday, November 13, 2014 by Emma*

**Algebra **

What is the coefficient of x^3 when 24x^4+6x^3+4x^2-7x-5 is multiplied by 6x^3+3x^2+3x+4 and the like terms are combined? I got 144x^7+108x^6+90x^5+114x^4+24x^3 so the answer would be 24. But I am not sure if I am right.
*Thursday, November 13, 2014 by Trish Goal*

**Algebra **

Find h(x) with terms in order of decreasing degree, if 9x^3-3x+1+h(x)=3x^2-5x+3.
*Thursday, November 13, 2014 by Trish Goal*

**Algebra**

What is an equation in slope intercept form for the line that passes through the points (1,-3) and (3,1)?
*Thursday, November 13, 2014 by Rachel*

**math algebra**

thanks to reiny and steve, I repeat again that steve answer is incorrect, and I did not type it incorrectly . I mailed the ? as in the book . thanks
*Thursday, November 13, 2014 by mohammad*

**Intermediate Algebra**

Environmental scientists often use cost-benefit models to estimate the cost of removing a pollutant from the environment as a function of the percentage of pollutant removed. Suppose a cost benefit function for the cost C (in millions of dollars) of removing x percent of the ...
*Thursday, November 13, 2014 by Anonymous1234*

**Algebra**

Which is the correct factorization for -3x^5 + 24x^2? -3x^2(x - 2)(x^2 + 2x + 4) -3x^2(x - 2)(x + 2)(x + 2)
*Thursday, November 13, 2014 by Anonymous*

**Algebra 2**

Hey, I don't understand this question I have honestly done this question about a good 3 times but never seemed to get the right answer. Please Help!!! Solve each equation by factoring. Check your answers. 7x^2=21x
*Thursday, November 13, 2014 by Taylor*

** maths algebra**

HI STEVE, THANKS for your reply back it was the wrong answer the one you worked, yes a hard question, here is an example of simultaneous questions. x-2/3 + y-1/4 =13/12 (1) 2-x/2 + 3+y/3 =11/6 (2) first step is to get rid of fractions. in equation (1) the lcm of denominators ...
*Thursday, November 13, 2014 by mohammad*

**Algebra**

An isotope has a half-life of 97 years. how much of a 19-gram sample is left after 150 years?
*Thursday, November 13, 2014 by Miles*

**Freshman Algebra**

Using a chart: At noon a private plane left Austin for Los Angeles,2100km away, flying at 500km/h. One hour later a jet left Los Angeles for Austin at 700km/h. At what time did they pass each other?
*Wednesday, November 12, 2014 by Madison*

**Algebra **

I already posted this question and Reiny answered it, I just wanted to clarify my answer Problem: If f(x) is a polynomial of degree 4, and g(x) is a polynomial of degree 2, then what is the degree of polynomial f(x)-g(x)? Reiny: so f(x) has to contain an x^4 term and g(x) does...
*Wednesday, November 12, 2014 by Trish Goal*

**Algebra 2 **

How do I solve this using the Quadratic formula and finding the determinant? 1. 5x-6=0 2. x+25=0
*Wednesday, November 12, 2014 by Jessica*

**Algebra **

If p(x)=x^4-3x+2, then find the coefficient of the x^3 term in the polynomial (p(x))^3.
*Wednesday, November 12, 2014 by Trish Goal*

**Algebra **

If f(x) is a polynomial of degree 4, and g(x) is a polynomial of degree 2, then what is the degree of polynomial f(x)-g(x)?
*Wednesday, November 12, 2014 by Trish Goal*

**Algebra **

Suppose that f is a polynomial such that (x^2-1)*f(x)=5x^6-x^5+3x^4+x^3-25x^2+38x-17. What is the degree of?
*Wednesday, November 12, 2014 by Trish Goal*

**Algebra HELP!**

An estimate of the frog population in a certain pond was found by catching 30 frogs, marking them, and returning them to the pond. The next day, 50 frogs were caught, of which 14 had been marked the previous day. Estimate the frog population of the pond.
*Wednesday, November 12, 2014 by Ashley*

**Algebra **

Find all positive integer values of c such that the equation x^2-7x+c=0 only has roots that are real and rational.
*Wednesday, November 12, 2014 by Trish Goal*

**Algebra**

The dimensions of a rectangle are such that it's length is 9 in. more than its width. If the length were doubled and if the width were decreased by 4 in., the area would be increased by 110 in^2. What are the length and width of the rectangle?
*Wednesday, November 12, 2014 by Anonymous*

**Algebra**

You invest an initial $4,500 in an account that has an annual interest rate of 4.5%, compounded daily. How much money will you have in the account after 10 years? Round your answer to the nearest whole number.
*Wednesday, November 12, 2014 by Julia*

**Algebra 2 HELP plz**

An object is launched upward with an initial velocity of 64 feet per second from a platform 80 feet high. 1.) Write a height model for the object. I wrote my model as .... h=-16t^2 +64t +80 2.) How many seconds until the maximum height is reached? I had 2 seconds as my answer ...
*Wednesday, November 12, 2014 by kylie*

**College Algebra **

Ozone occurs at all levels of Earth's atmosphere. The density of ozone varies both seasonally and latitudinally. At a given city, the density D(h) of ozone (in 10^−3cm/km) for altitudes h between 20 kilometers and 35 kilometers was determined experimentally. For the ...
*Wednesday, November 12, 2014 by Kyle *

**College Algebra **

Find the standard equation of a parabola that has a vertical axis and satisfies the given conditions. x-intercepts −2 and 8,highest point has y-coordinate 5
*Wednesday, November 12, 2014 by Kyle *

**College Algebra **

An object is projected vertically upward from the top of a building with an initial velocity of 112 ft/sec. Its distance s(t) in feet above the ground after t seconds is given by the equation s(t) = −16t^2 + 112t + 100. (a) Find its maximum distance above the ground. s(t...
*Wednesday, November 12, 2014 by Kyle *

**Algebra **

Let f,g, and h be polynomials such that h(x)=f(x)*g(x). If the constant term of f(x) is -4 and the constant term of h(x) is 3, what is g(0)?
*Wednesday, November 12, 2014 by Trish Goal *

**Algebra **

Consider the polynomials: F(x)= 4x^3 + 3x^2 + 2x +1 G(x)= 3 - 4x + 5x^2 - 6x^3 Find c such that the polynomial f(x)+cg(x) has degree 2.
*Wednesday, November 12, 2014 by Trish Goal *

**algebra**

Tom invests $10,000 into two accounts, one paying 2% interest per year and the other paying 5% interest per year. He invested 3 times as much in the account paying 5% than in the account paying 2%. how much interest will he ear in one year?
*Wednesday, November 12, 2014 by Taylor*

**algebra**

An exponential function passes through the points (2,3), (9,33), (15,K). What is the value of K?
*Wednesday, November 12, 2014 by Taylor*

**intermediate algebra**

two perpendicular lines intersect at (2,3) one of the lines has an x-intercept of 2. what are the equations of both lines?
*Wednesday, November 12, 2014 by Taylor*

**Intermediate algebra**

How many quarts of water must be mixed with 8 quarts of a 25% salt solutions to obtain a 17.5% salt solution?
*Wednesday, November 12, 2014 by Taylor*

**math algebra**

COULD SOME OF WITH DEGREE IN MATHS HELP ME TO SOLVE THIS SIMULTANEOUS EQUATION PLEASE, PLEASE ? I HAVE RIED DIFFERENT METHODS BUT IT CANNOT GET THE CORRECT ANSWER, AS IN THE BOOK. X-3/4 -Y-2/5 = -1/4 (1) 4-X/3+ 3-Y/2 = - 13/20 (2) 5x-15-4y+8= -1 5x-4y=17-1 8-2x+9-3y= -13 -2x-...
*Wednesday, November 12, 2014 by mohammad*

**Algebra, help please!!!**

A penny, nickel, dime, and a quarter are tossed. What is the probability of the event of obtaining at least three heads on the tosses?
*Tuesday, November 11, 2014 by KG*

**College Algebra**

graph linear equation Y=1/2x-3 and -x+2y=-6
*Tuesday, November 11, 2014 by Ann*

**Advanced Algebra **

How do I solve: how to solve 3x=4(4-2x)=11 and x-2y+4z=9 x=2z+2 y=-4z ? Thanks Need ASAP
*Tuesday, November 11, 2014 by Theresa *

**Algebra Help URGENT Please?**

Jamie is a salesperson in a shoe store and earns $95 per week, plus 20% of her weekly sales. If Jamie makes $475 in one week, what are her sales for that week?
*Tuesday, November 11, 2014 by Jeff*

**Algebra help URGENT Please?**

Chris and five of his friends go out to dinner. The total bill comes to $124.29. They decide to leave a 20% tip. Each person will contribute an equal amount to the total tip. Estimate what each person should contribute. a$29.00 b$21.00 c$5.00 $4.15
*Tuesday, November 11, 2014 by Jeff*

**algebra**

If 3.14*r^2=706.5? what does r=?
*Tuesday, November 11, 2014 by Joshua*

**algebra 2**

I don't understand this (x-y)/(x+y) + (x+y)/(x-y)
*Tuesday, November 11, 2014 by Janet*

**Algebra please help answer ASAP**

Milaela is competing in a race in which she both runs and rides a bicycle. She runs 5 kilometers in 0.5 hour and rides her bicycle 20 kilometers in 0.8 hour. Part A. At the given, how many kilometers can Mikaela run in 1 hour? part B. At the given rate, how many kilometers can...
*Tuesday, November 11, 2014 by Iana*

**Algebra please help answer thx**

5/8 of the 64 musicians in a music contest are guitarists. Some of the guitarists play jazz, solos, and the rest play classical solos. The ratio of the number of guitarists playing jazz solos to the total number of guitarists in the contest is1:4. How many guitarists play ...
*Tuesday, November 11, 2014 by Iana*

**Intermediate Algebra**

Environmental scientists often use cost-benefit models to estimate the cost of removing a pollutant from the environment as a function of the percentage of pollutant removed. Suppose a cost benefit function for the cost C (in millions of dollars) of removing x percent of the ...
*Tuesday, November 11, 2014 by Anonymous1234*

**algebra**

Andy hit three less field goals than three times the number of field goals Gary hit. Together, they scored 17 field goals. Write and Solve an equation to find how many field goals Gary and Andy scored.
*Tuesday, November 11, 2014 by bob*

**algebra**

the sum of the age of a girl and her brother is 26 year 3 years ago her age was 4 time the age of her brother. find their present age?
*Tuesday, November 11, 2014 by kiran*

**algebra**

f(x)=4.75x, gives its domain and range
*Monday, November 10, 2014 by Anonymous*

**Algebra**

6(3+2s) + 4(s + 8) =
*Monday, November 10, 2014 by Krys*

**algebra**

IF M(3-1) is the midpoint of the segment AB and A(8.12) is the coordinates of A. Fin the coordinates of point B.
*Monday, November 10, 2014 by ER*

**Algebra 2**

Solve 5x^2 − 34x = 0 by factoring. What is the smaller answer?
*Monday, November 10, 2014 by Anonymous*

**Algebra**

Find the number of ways that 4 flags can be displayed on a flagpole, one above the other, if 10 different flags are available.
*Monday, November 10, 2014 by KG*

**College Algebra **

If the point P is on the graph of a function f, find the corresponding point on the graph of the given function. P(4,9) y=1/3f(1/2x)-1
*Monday, November 10, 2014 by Ashton*

**Math 201 ( Algebra)**

A student has a number of $40 dollar and $80 dollar savings bonds to use for part of her expenses for college. The total value of the bonds is $1000. There are 7 more $40 bonds than $80 bonds. How many of each type of bond does she have?
*Monday, November 10, 2014 by Jeff Scott*

**Math! Algebra 1! **

A boat is traveling in a river with a current that has a speed of 1.5 km/h. In one hour, the boat can travel twice the distance downstream as it can travel upstream. How long will it take the boat to travel 100 km in still water?
*Monday, November 10, 2014 by Dede*

**Algebra**

"If possible, completely factor the expression. (If the expression is not factorable, enter NF.) x2 − 6x − 7"
*Monday, November 10, 2014 by Lee*

**College Algebra**

'rental miles: it cost 27.95 per day plus 0.15 per mile to rent a car. How many miles was a car driven that was rented for one day and had a rental bill of $45.95?'
*Sunday, November 9, 2014 by Kia *

**Algebra**

2/3y+5-3-11/12y. Trying to simplify. 2/3 y-11/12 y+5-3. 8/12y+5-3. 3/4y+2
*Sunday, November 9, 2014 by Gypsea*

**college algebra **

how to solve equation in the real number system, x^4 +12x^3 +10x^2-9x+9x+22=0
*Sunday, November 9, 2014 by linda*

**college algebra **

hw to solve equation in the real number system, x^4 +12x^3 +10x^2-9x+9x+22=0
*Sunday, November 9, 2014 by linda*

**College algebra **

Use descartes rule of sign to determine the possible number of positive real zeros and possible number of negative 6x^5-6x^4+7x^3-8
*Sunday, November 9, 2014 by Samer*

**Algebra 2**

Solving Systems of Equations in Three Variables: 3x+3y-z=-3 -2x-3y+2z=3 x-6y+3z=0 PLease show work
*Sunday, November 9, 2014 by Stephy*

**math pre algebra**

if x =7 and y=9 and the answer is 98 what would the expression be?
*Sunday, November 9, 2014 by nikki*

**Algebra 2**

Solving Systems of Equations in Three Variables: 3x+4y+z=1 x+3y-z=-2 -2x+y-2z=-5 Please show work
*Sunday, November 9, 2014 by Stephy*

**Algebra 2**

Solving By Factoring: The length of the side of a large square is 1 cm less than twice the length of the of the side of a smaller square. The area of the large square is 33cm^2 more than the area of the small square. Find the length of the sides of the two squares. Please show...
*Sunday, November 9, 2014 by Miguelina*

**Algebra 2**

Solving By Factoring (x-8)(x-5)=x Please show work!!!
*Sunday, November 9, 2014 by ALEXANDAR*

**Algebra 2**

Solving By Factoring 2x(2x+1)=2 Please show work!!!
*Sunday, November 9, 2014 by Alicia*

**Algebra **

What are the coordinates of the points where f(x) =x^3-x^2+x+1 And g(x)=x^3+x^2+x-1 intersect?
*Sunday, November 9, 2014 by Trish Goal*

**Algebra **

Let a and b be real numbers, where a<b, and let A= (a,a^2) and B=(b,b^2). The line AB (meaning the unique line that contains the point A and the point B) has x-intercept (-3/2,0) and y-intercept (0,3). Find a and b.
*Sunday, November 9, 2014 by Trish Goal*

**algebra**

A rectangle has a length that is 2 less than 3 times the width. If the area of this rectangle is 16, find the dimensions and the perimeter.
*Sunday, November 9, 2014 by cmurda*

**Algebra **

Assume that f(3)=4. Name a point that must be on the graph of y=1/2f(x/2).
*Sunday, November 9, 2014 by Trish Goal*

**Algebra **

Assume that f(3)=4. Name a point that must be on the graph of y=f(x)+4
*Sunday, November 9, 2014 by Trish Goal*

**Algebra 2**

Solving By Factoring (x-8)(x-5)=x Please show work!!!!
*Saturday, November 8, 2014 by Alicia*

**Algebra 2**

Solving By Factoring 4x(x-6)-x(x-2)=-24 Please show work!!!
*Saturday, November 8, 2014 by Clara*

**Algebra 2**

Solving By Factoring 6x^2-13x=-6 (x-8)(x-5)=x 4x(x-6)-x(x-2)=-24 Please show work I want to learn!!!!!!
*Saturday, November 8, 2014 by Clara*

**Algebra**

A kayaker paddles upstream for 1.5 hours then turns his kayak around and returns to his tent in 1 hour. He travels 3 miles each way. What is the rate of the rivers current?
*Saturday, November 8, 2014 by John*

**Algebra 2**

Solving By Factoring 7p^2-50p=-7 Please show work for I could learn.
*Saturday, November 8, 2014 by Miguelina*

**algebra**

Please Help Me Check My Work :) 1) Find the 5th term of - f(n)= 3(n-3) My answer- -279 2) Find the third term if the first term is 4 - f(n)= 2f(n-1)+2 My answer- 16 3) Find the third term using the explicit rule - f(n) 4-n/n+3 My answer- 1/6 4) Recursive Function- 1, -2, -5...
*Saturday, November 8, 2014 by Kim*

**Algebra 2**

Solving By Factoring Help me with these problems. 2x(2x+1)=2 5x^2+34x=7 Please show work I want to learn!!!
*Saturday, November 8, 2014 by Migue*

**Algebra 2**

Find x,y,z 2x-3y+z=-1 2x-y+2z=6 5x-4y+3z=6 Please show work I want to learn!!!
*Saturday, November 8, 2014 by Anonymous*

**algebra**

solve the equation for x -2(2x-2)=2x for y 9x+y=9 solve theinequality 2x-6<8x+18 solve 0.14-0.01(x+2)=-0.02(3-x)
*Saturday, November 8, 2014 by gary*

**Intermediate Algebra**

How much would you have to deposit today in order to have $5000 in 4 years in a bank account that pays 5% annual interest rate
*Saturday, November 8, 2014 by Babydoll2007*

**Intermediate Algebra **

A bank loaned out $17,000 part of it at a rate of 6%per year and the rest at 14%per year. If the interest received in one year totaled $1500 how much was loaned at 6%.
*Saturday, November 8, 2014 by Babydoll2007*

**Intermediate Algebra**

The average monthly benefit B for certain individuals is given by the equation B=18.75+585.72, where t is the number of years since 1990. In what year will the monthly benefit B exceed $1050? That is, solve B>1050.
*Saturday, November 8, 2014 by Babydoll2007*

**Algebra **

What are the coordinates of the points where the graphs of f(x)=x^3-x^2+x+1 and g(x)=x^3+x^2+x-1 intersect? Give your answer as a list of points separated by semicolons. (So "(1,-3); (2,3); (5,-7)" is a valid answer format.)
*Friday, November 7, 2014 by Trish Goal*

**Algebra **

Let a and b be real numbers, where a<b, and let A= (a,a^2) and B=(b,b^2). The line AB (meaning the unique line that contains the point A and the point B) has x-intercept (-3/2,0) and y-intercept (0,3). Find a and b.
*Friday, November 7, 2014 by Trish Goal*

**algebra and geometry**

On a floor plan, a room measures 2 inches by 5 inches. If the scale is 1 inch =4 feet, what is the actual size of the room?
*Friday, November 7, 2014 by teshena*

**Algebra**

Can you solve these equation by completing the square 2x^2+7x-4=0 3x^2x-1=0
*Friday, November 7, 2014 by Amy*

**Algebra**

A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.3 x 10^2 um. Find the earthquake's magnitude. Round your answer to one decimal place.
*Friday, November 7, 2014 by Paul*

**Algebra**

Find the number of decibels for the power of the sound given. Round to the nearest decibel. A rocket engine, 2.50 * 10^5 watts cm^2 what is the db?
*Friday, November 7, 2014 by Roger*

**algebra **

would multiplying 3 negative integers always equal a positive integer?
*Friday, November 7, 2014 by anon*

**Algebra HELP!**

Ryan is building matchstick square sequences, as shown ( first figure used 4, second figure used 7, third figure used 10, and the forth figure used 13). He used 599 matchsticks to form the last two figures in his sequences. How many matchsticks did he use in each of the last ...
*Thursday, November 6, 2014 by A*

**algebra help!**

what is the domain of the function below? {(0,2)},(3,1),(5,2),(8,4)}? a. {1,2,4} b. {0,3,5,8} c. {0,1,2,3,4,5,8} d. {(0,2),(3,1),(5,2),(8,4)} ***** Is the following relation a function? {(0.3,0.6),(0.4,0.8),(0.3,0.7),(0.5,0.5)} a. yes b. no ***** c. cannot be determined
*Thursday, November 6, 2014 by Nikky*

**Algebra **

Let a and b be real numbers, where a<b, and let A=(a,a^2) and B=(b,b^2). The line AB( meaning the unique line that contains the point A and the point B) has x-interecept (-3/2,0) and y-intercept (0,3). Find a and b.
*Thursday, November 6, 2014 by Trish Goal*

**Algebra **

What are the coordinates of the points where f(x)=x^3-x^2+x+1 and g(x)=x^3+x^2+x-1 intersect?
*Thursday, November 6, 2014 by Trish Goal*

**algebra**

Give an equation of a line in slope intercept form that would be parallel to the equation y=3x+5 and passes through (0,3).
*Thursday, November 6, 2014 by Taylor*

**Intermediate Algebra **

Atmospheric carbon dioxide levels continue to increase and are suspected to contribute to global warming. The solution to the polynomial equation x3 – 380x2 + 2x – 760 = 0 gives the record high amount of carbon dioxide in parts per million (ppm) in 2005, as measured ...
*Thursday, November 6, 2014 by Babydoll2007*

**Algebra/Math **

The graphs of a function f(x)=3x+b and its inverse function f^-1(x) intersect at the point (-3,a). Given that b and a are both integers, what is the value of a?
*Thursday, November 6, 2014 by Trish Goal*

**Intermediate Algebra **

Explain why (-9)1/2 is not a real number but -9 1/2 is a real number.
*Thursday, November 6, 2014 by Babydoll2007*

**Algebra help**

Your cost c to buy w pounds of walnuts at $6/Ib represented by c = 6w A truck originally held 24 chairs. You remove 2 chairs at a time. The number of chairs n remaining after you make t trips is represented by n= 24-2t. The volume V remaining in a 243-ft^3 pile of gravel ...
*Thursday, November 6, 2014 by Mia*

**Math/Algebra **

The graphs of y=3-x^2+x^3 and y=1+x^2+x^3 intersect in multiple points. Find the maximum difference between the y-coordinates of these intersection points.
*Thursday, November 6, 2014 by Trish Goal*

**Algebra **

Find all points (x,y) that are 13 units away from the point (2,7) and that lie on the line x-2y=10.
*Thursday, November 6, 2014 by Trish Goal*