Sunday

May 24, 2015

May 24, 2015

Number of results: 33,780

**ALGEBRA HELP NEEDED PLEASE!**

Please see the Algebra post on the current question page. Help still needed and appreciated thank you
*September 11, 2007 by Anonymous*

**algebra**

im not to good at algebra so here goes im supposed to multiply 5.(3.2) i know im supposed to multiply both sides by 5 but be on that im not sure what to do help please?
*November 22, 2009 by help*

**Math (Algebra)**

if i have 3 algebra tiles(big size)and 2 regular size negative tiles what would the expression be?
*June 13, 2013 by cake*

**College Algebra**

Penn foster College Algebra exams...
*January 2, 2012 by Sam Shah*

**Algebra I**

I am tying to determine whether the graph pairs below are parallel. x+12=y and y-x=-8. I have found the slope to x+12=y is 1. But I can't determine the slope for for y-x=-8. I am thinking maybe it is undefined, but I am not sure, since I am really new at this algebra. Any help...
*September 6, 2010 by Ziggy*

**Algebra**

Hi! Today I was absent from my algebra class, and they learned how to recognize and factor the difference of two squares.. I've tried to figure it out from the book, but it's not making any sense... Can someone help? I'm trying to figure out this problem 1 - 4x^2
*March 21, 2011 by Anna*

**Grammar**

Replace with or replace for? Sentence: I want to replace algebra (with/for) trigonometry. If I use the word with, then does that's an I want trigonometry and not algebra? If I use the word for, then does that mean I want algebra and not trigonometry? Any rules?
*August 29, 2013 by Anonymous*

**algebra**

the population P(t) of a new residential development t years after 2010 is P(t)=8000(1-e^-0.3t). What is the population for 2015? * algebra - Reiny, Sunday, December 5, 2010 at 6:19pm replace t with 5 and evaluate using your calculator (I got 6215) I was the population to ...
*December 5, 2010 by math help*

**what does pre-algebra mean??**

i have to draw things that have to do with pre algebra but...i dont understand the meaning of it
*August 25, 2008 by damainmind*

**Algebra II**

I need to write a polynomial in SIMPLEST FORM having roots 2,-2 and 4. I have to gt rid of the parentheses by multiplying everything out.Did I do it correctly? Also, someone said yes, but I'm wondering if it suppose to have anything else done to it-it seems way too easy the ...
*September 22, 2011 by Jessica*

**algebra 3-4**

im in a cal class but were reviewing algebra stuff now. and i have 1 more questions. it says. express the given quantity as a single loragithms 2ln4-ln2 so is it 2ln(2) please tell me if im getting the right answers and if im not then please show me how to do it. thank you for...
*September 26, 2007 by thu*

**Algebra **

I need help with a riddle my Algebra teacher gave us? Why did the square root of 9 refuse to discuss anything with his brothers cubed root of 9, 1 ninth and the square root of negative 9?
*February 5, 2012 by Mary *

**sites for algebra**

I am tutoring an 8th grader in algebra. Does anyone know of a website that I can use to give him problems to solve and I can go back and monitor his progress via the web. Or, any suggestions on tutoring. The child seems to know the work, just not doing enough to remember the ...
*August 26, 2008 by Pam*

**Algebra**

Hello, can someone check my answers to the following Algebra questions 1. (2y)(-2)= My answer - 2 * -2 = 0 Translate 2 and 3 into an euation 2. Four less than the quotient of x divided by 2 is 8. My answer - (x * 2) -4 = 8 3. The sum of two consecutive integers is 35. My ...
*December 31, 2009 by Tamir*

**algebra**

Create your own number game using the rules of algebra and post it for your classmates to solve. Be sure to think about values that may not work. State whether your number game uses the skill of simplifying rational expressions
*October 7, 2008 by mike*

**10th Grade Algebra**

Please help me with these factorise algebra questions!!! 1. 9c squared + 30c + 25 - 4d squared 2. 12 + 89 - 4a squared 3. -5x squared + 27x - 10 4. If A= 15x squared - 20x +11 and B= 1 + 9x+ 5x squared, then A-B when factorised is...
*May 1, 2011 by Jason*

**algebra**

Algebra Equation 3x-12=-48
*April 26, 2010 by aly*

**Quick math question**

Can anyone give me a link to a free online algebra test for 9th graders. I have a test on Monday based on algebra to see if I can move on to Geometery and I need a test to see if I'm ready. Thanks
*April 24, 2009 by Katie*

**FOR MATHMATE**

Media services charges $40 for a phone and 20/mth for its economy plan. It says to find a model that determines the total cost, C(t), of operationg a media Services phone for t months. I think the answer should be in this equation - y = mx+b. Not sure. Algebra/Equations,...
*November 26, 2010 by AMY*

**Algebra**

A soda cost A cents for each bottle, including the deposit, but there is a refund of B cents on each empty bottle. How much must you pay for X bottles if you bring back Y empties? I need to know how to write an algebra Equation/Expression to solve this problem...Please Help......
*May 13, 2009 by Mike 50*

**Math: Algebra**

Madoka has scores 84, 89, and 91, each out of 100 points, on her algebra tests. Use an inequality to find the score she must make on the final exam to pass the course with an average of 90 percent or higher, given that the final is worth 150 points.
*September 10, 2013 by Irelia*

**Algebra 2**

I have taken algebra 2 for three years in a row. I take notes daily, I pay attention in class, I have a tutor, and yet I am in the same position again. I currently have a 56.7% in my algebra 2 class. I have one test and the final exam before final grades are figured. The ...
*January 13, 2008 by Zachery*

**Algebra**

Hi, could someone possibly check my answers to these algebra questions? Its not my strong point so have been struggling a little (or alot if they are all wrong!) 3m-8-5m+10 = 2-2m 4(2-6x) = 8-24x 7(a+3)-5 = 7a + 16 2x-3(4y-x) = 2x-12y-9x 2(4y-1)+5y(3-2y) = 2(4y-1) +5y(3-2y) If...
*February 4, 2010 by Geoff*

**Algebra II**

I skipped algebra I so I never learned about matrices. If you had a 2X3 matrix & multiplied it by a 3X2 matrix, what size would the product matrix be? Would it be a 3X3? Is there any way to know? I have a test monday and i want to make sure I know this.
*September 16, 2007 by Sammy*

**algebra **

The mean on a Advanced Algebra test was 78 with a standard deviation of 8. If the test scores are normal distributed, find the interval about the mean that contains 99.7% of the scores. Use the empirical rule.
*January 28, 2015 by Katie *

**Algebra**

Divide 1-125b^3 by 5b - 1 You need to learn the technique of polynomial long division. It's just the same as if numbers were involved. See http://www.sosmath.com/algebra/factor/fac01/fac01.html for sevaral examples. Hint: It will be a three-term polynomial. The first term will...
*August 6, 2007 by Juri*

**Algebra**

Hi, Any help on this would be very much appreciated. The graph y=3x^2+6x+9 is a parabola, I need to use algebra to find the equation of the axis of symmetry, I then need to use this information to find the coordinates of the vertex. Any ideas? Many thanks
*June 30, 2010 by Sam*

**Algebra **

An algebra teacher drove past a farmyard that was full of chickens and pigs. The teacher happened to notice that there were a total of 70 heads and 200 legs. How many chickens and how many pigs were there?
*March 5, 2012 by Amaris*

**ALGEBRA**

Checking algebra answer, Is it correct? 320km/1hr ↓ 320km /1hr →1m/1.609km =320m/1.609hr=199.3mph Answer: Round to nearest 10th =198.9mph
*August 25, 2014 by ALGEBRA*

**Algebra**

Hi. I need help on a couple of algebra problems. Can you please explain step by step how to do these? Thanks. (3x (whole thing has radical sign) ---- 2y^3 ^3(2x^4y^4) ------------ (the whole thing is cubed 9x
*August 26, 2013 by Serena*

**Math (algebra)**

Hi could you please help me with this algebra question. A rectangle has one corner on the graph of y=36-x^2, another at the origin, a 3rd on the positive y-axis, and the fourth on the positive x-axis. Express the area A of the rectangle as a function of x. What is the domain ...
*March 19, 2014 by Kyla Bills *

**MAT 116 (algebra)**

Please help not understanding this question. If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a cost decrease of four times? Make up your own numbers in an example and then explain your answer as though you were talking to ...
*May 15, 2012 by Liz*

**algebra 1**

Algebra 1 - bobpursley, Monday, January 3, 2011 at 4:13pm didn't I just give you the three steps? What did you not understand about those steps? Algebra 1 - Erudita, Monday, January 3, 2011 at 4:34pm subtract x from each side, then subtract 9 from each side. Finally, divide ...
*January 3, 2011 by Erudita*

**Algebra**

I have one more question I need to ask about algebra, this one is a perform the indicated operation question. 4x 5x ----- - ---- x^2-9 x^2+4x-+3 I am really confused on the -+3 part, I don't know if my teacher made a typo or what, because without the - in that part it would be...
*March 18, 2008 by Jeff*

**pre algebra**

my grade is 83.17 in pre algebra in college, but the final exam is worth 300 points. If I got a B or B- or a C on the final, what would my grade be overall?
*March 10, 2011 by Amber shall*

**pre-algebra**

Use algebra tiles to find the difference. Let one white tile equal +1and one black tile equal -1.6-(-9) Thanks
*November 17, 2012 by Shay*

**algebra**

In algebra does a negative and a negative equal a positive?
*October 27, 2009 by N~*

**Algebra**

how to solve algebra equation √(5x^2 )+7x+2-√(4x^2+7x+18) =x-4
*April 14, 2014 by Tuaha*

**Algebra**

There are 37 students in an algebra class. there are 9 more girls than boys. how many boys and how many girls are in the class? I have to use systems of equations to solve.
*February 23, 2012 by Jennifer*

**pre-algebra**

Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal 1.
*April 5, 2012 by nay nay*

**math**

Mr. Doodles grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 210 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she receives ...
*May 29, 2011 by kozy*

**Algebra Repost**

Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet? (A) x squared - 8x + 240 = 0 (B) 2x(2x-8x+16)=240 (C) x squared + 8x + 240 = 0 (D) x squared + 8x - 240 = 0 I got (x)(8x)=240...
*May 4, 2008 by Anonymous*

**Algebra**

In my Algebra class I am working with rational expression. I know it is important to understand the differnce between a factor and a term of an expression. Can someone give me the definition for both and explain to me the difference between the two? Thanks. My Thomas book says...
*June 13, 2007 by jessica*

**Pre-Algebra Math**

A bank teller is counting his money and notices that he has an equal number of tens and twenties. He also had $147 in other bills. If the total value of the bills he has is $1,167, how many tens and twenties does he have What would be the equation in algebra?
*January 27, 2011 by Leah*

**Math**

Mr. Doodles grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 110 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she receives ...
*July 19, 2011 by Jen*

**Algebra**

The state of Texas has anarea of approximately 266,806 squaremiles. Its area is approximately 220times the area of the state of RhodeIsland. What is the area of Rhode Island? How would you put this into a algebra expession as well?
*October 2, 2011 by Jab*

**Algebra**

89, 88, 78, 95, 92 Sadye has the Algebra test scores shown. If her goal is to have a test average of 90 or higher what is the lowest score she can make on her next test and still achieve her goal? Note: scores are not rounded.
*April 29, 2014 by Daizha*

**algebra**

O.k. I'm 42 trying to help my nephew with algebra and lets just say it's been awhile.... Total money $ 101.25 45 more dimes than nickels 3 times as many quarters as dimes. How many nickels, dimes & quarters?
*November 21, 2011 by Maura*

**Algebra**

Algebra Question: A team wins 15 of their first 20 games. If they win only half the time from now on, how many games will they have to play in order to win 60% of their total games? I have it figured out manually, but cant get it in equation form.
*September 12, 2012 by Robert*

**pre-algebra**

write an inequality for the sentence. The total t is greater than five. Well your answer is going to be T and the sign for greater than is simply >. So the answer would be T > 5 ok again my name is above. i was just wondering what pre-algebra was? i mean i take the ...
*March 9, 2007 by Joe*

**algebra 2**

i need help with my algebra 2 homework, the section is called using matrices to represent data. here is one of the problems: -1/2A+(B-A) A=[7 3 -1 5] [-2 8 0 -4] and B= [6 0 11 -3] [-5 2 -8 9] i don't know how to do this problem and the book doesn't have a problem like this ...
*March 17, 2009 by brittany*

**Math**

Mr. Doodles grade distribution over the past 3 years for a course in college algebra is shown in the chart below. Grade Number A 45 B 180 C 110 D 95 F 65 I 5 If Jane plans to take a college algebra course with Mr. Doodle, determine the empirical probability that she receives ...
*July 20, 2011 by Jen*

**Stats**

On her first test in algebra, Mary earned a score of 75, and she made an 85 on her first psychology test. If the average score on the algebra test was a 68, with s=7, and the average on the psychology test was 91, with s=6, is Mary doing better in psychology or algebra. Why?
*October 4, 2012 by Amber*

**Physics but algebra problem**

Having issue with algebra. 89N=ma 99N=m2a would you do something like plugging one into the other such as. a=89/m 99N=99/(2(89/m) prob is when i get a fraction in the denominator i get confused can someone help me. I'm trying to find the mass. Which i will then convert into ...
*September 23, 2009 by Leah*

**Algebra **

I need some help with algebra as I'm confused as to how to solve them. Find the common difference d and the value of a1 using the information given. 1. a6= 5/4, a8= 9/4 Evaluate each sum. 2. E like symbol that has a 29 on the top. On the bottom n=1 and to the right (4n-1) Find...
*April 8, 2013 by Jenny*

**pre-algebra(algebra)**

I'm not sure if I have the correct answer to this problem...All I have to do is use the Distributive Property to write each expression as an equivalent algebraic expression. Here is the problem: b(c+3d) Is the answer: bc+3bd
*October 3, 2007 by Stacy*

**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 ...
*May 11, 2013 by Hanah*

**algebra**

How do I do substitution equations out of the equations in the system, pick the one that has the least amount of funky numbers. then make that equation equal to either x or y(or any other variable dependin on what kind of systems youre doing, usually just x and y in algebra 1...
*November 30, 2006 by Adraen*

**ALGEBRA**

can you help me with this. d dont get it at all :( let n be the number used for the given number puzzle. use algebra to show how the puzzle works. 1. pick a number 2. subtract 9 3. multiply by 6 4. divide by 3 5. add 18 6. subtract twice your original number You will always ...
*September 24, 2008 by ROBERT*

**Intermediate Algebra**

Combine like terms: -3x^2+2x-4x^2-9+6x-2x^2+8 Solve for x: 8x-11= -11x+18 Solve for x: -2(x-5)+7=z-8-5x Solve for x: (x-2)/5 - 3/2= (x+1)/10 Translate to an algebra statement; do not solve: Seven times the difference of six and a twice a number yields the same result as the ...
*September 29, 2007 by Dawn*

**Pre-Algebra: Help**

I have to do a webquest for pre-algebra and we have to make up a fundraiser thing, I need a list of things that one needs for a charity fundraiser, such as chairs, buffet tables, tables, tents, tablecloths. HELPP
*March 3, 2011 by Cheryl*

**algebra**

open box made from 33 x 33 inch sheet of metal by cutting out x-inch square from each corner and folding up the sides. What size square should be cut out to produce a box of maximum volume? (This is algebra class)
*October 15, 2011 by Sushmitha*

**Algebra**

How would you explain to a seventh grader the difference between the domains of an odd root radical function and an even root radical function? How would you change your explanation for someone who had taken high school algebra?
*December 10, 2014 by Candy*

**algebra**

For the quadratic function f(x) = - x^2 +2x + 6, find the vertex and the axis of symmetry, and graph the function. Again, I need help with this as these are practice examples for an upcoming quiz and I stink at this part of algebra and I need to get it otherwise I won't ...
*February 4, 2015 by slomomo*

**DRWLS,MATH,ALGEBRA**

Drawls, How did you get 2h. and then the 2a/h from.Can you help me understand it when you get a chance. Directions: Solve each literal equation for the indicated variable. A=1/2h(B+b) (For b) Area of a trapezoid For Further Reading math,algebra - drwls, Monday, December 18, ...
*December 18, 2006 by jasmine20*

**algebra**

The kinetic energy of a particle of mass m is found by taking one-half of the product of the mass (M) and the square of the veocity (V). write an expression for the kinetic energy of a particle. Am i correct in writing KE=1/2mv^2 yes can u help me study for my algebra test ...
*March 11, 2007 by Ann*

**college Algebra/Linear Algebra**

Find a Basis for each of these substances of R^4 (a) All vectors whose components are equal (b) All vectors whose component add to zero (c) All vectors that are perpendicular to (1,1,0,0) and (1,0,11) (d) The column space (In R^2) and nullspace(In R^5) of U=[1 0 1 0 1] [0 1 0 ...
*November 3, 2010 by traxx*

**algebra/ inequalities**

Posted by lauren on Thursday, April 17, 2008 at 8:45pm in response to ALGEBRA. the problem is 92 is greater than or equal to negative 4p. why is the answer p is greater than or equal to negative 23? I am confused! why is it not p is less than or equal to negative 23?
*April 17, 2008 by lauren*

**Math (algebra)**

Matt has to bake muffins. He uses x eggs for each 200 grams of flour. If he has to use 900 grams of flour how many eggs will he use? I have to set this up as an algebra problem. I am stuck. Our class is just learning this and I dont understand.
*January 11, 2012 by zach*

**algebra**

I'm in algebra class, and my graphing calculator isn't allowed. So I'm trying to get used to using a ti-36xsolar. I can't figure out how to put in simple algebraic expressions though, like 2x+1. In my graphic calculator, i could put that in and it solves it. With the ti-36 - I...
*January 8, 2009 by Help please*

**Math - Algebra**

Von's arcade uses 3 different colored tokens for its game machines. For 500, you can purchase any of the following combinations of tokens: 8 gold, 18 silver, and 7 bronze tokens; 8 gold, 14 silver, and 13 bronze tokens; or 16 gold, 6 silver, and 9 bronze tokens. What is the ...
*January 4, 2014 by Ashley Kate*

**Algebra**

solve x+21/x+3<2 x+21/x+3 - 2(x+3)/x+3 <0 x+21-2(x-3)/x+3<0 x+21-2x-6/x+3<0 answer 15-x/x-3<0(is this right?) For Further Reading Algebra - Anonymous, Thursday, April 3, 2008 at 5:07pm You are close. They want you to find the values of x so that the equation the...
*April 4, 2008 by Cynthia*

**Algebra**

Okay, i need help. I'm solving linear equations in intermediate algebra. My problem is that I never know which number to subtract first. Ex: 5y-8=-18 To get the right answer (-2), they move they add the 8 to both sides. But on 27w-64=-37 They move the 37 to get the correct ...
*January 24, 2009 by Kat*

**Math**

I need to find the value of x. 5(x-4) = 3(x+8) Trying to help my niece and haven't done this stuff for 20 years. :) 5(x-4) = 3(x+8) 5x - 20 = 3x + 24 5x - 3x = 20 + 24 2x = 44 x = 22 I hope this brings back the algebra you studied 20 years ago. :-) By the way -- to check ...
*August 6, 2007 by Beth*

**Algebra**

I need to make an algebra problem using a cake with the measurements 12 inches by 16 inches and 3 inches thick. There were also 30 guest there and half of the cake was left. I also need the concept being used.
*May 10, 2010 by Beth*

**Algebra**

I need to make an algebra problem using a cake with the measurements 12 inches by 16 inches and 3 inches thick. There were also 30 guest there and half of the cake was left. I also need the concept being used.
*May 10, 2010 by Beth*

**Algebra**

Debbie finished her algebra test early so she decided to check each of her answers. After checking her answer to question #10, she realized she made a mistake in her solution. In which step does Debbie make her mistake? Original Equation: 2 + 3y = 5(y - 2) Step One: 2 + 3y = ...
*September 25, 2013 by jacob*

**Alegreba**

The algebra which is appropriate for all students in the twenty-first century moves away from a tight focus on manipulating symbols to include a greater emphasis on conceptual understanding, on algebra as a means of representation, and on algebraic methods as problem-solving ...
*September 5, 2008 by Anonymous*

**set (math)**

A class of 47 students took examination in algebra and geometry. If 29 passed algebra and 26 passed geometry and 4 failed in both subjects, how many passed both subjects? With solution please, tnx...
*January 23, 2013 by HELP HELP HELP MNHS*

**Algebra**

Hello. It's the beginning of the school year, and I've quite forgotten what I learned in Pre-Algebra...The question in the text book is this : Simplify each pair of expressions. 1. 36 - 8 2 (36 - 8) 2 There are several problems like the one above. Under the same set of ...
*August 31, 2008 by Eve*

**Algebra 2**

thanks for the help earlier I got one more question X^4-13X^2+36 How do I factor this using algebra not just gussing and checking this times this and what number plus what number gives you these numbers how do i factor that wihtout playing one of those games were you like ...
*April 2, 2009 by Algebra 2*

**algebra**

The formula b=27a, is used in New England to estimate the minimum furnace output, b, in BTUs, for a modern house with a square feet of flooring. What is the minimum furnace output for BTUs? What is the answer to A? I have searched and listened to all kinds of algebra help ...
*January 8, 2011 by Demi*

**Algebra- is my answer right**

The one-to-one function f is defined by f(x)=(4x-1)/(x+7). Find f^-1, the inverse of f. Then, give the domain and range of f^-1 using interval notation. f^-1(x)= Domain (f^-1)= Range (f^-1)= Any help is greatly appreciated. Algebra - helper, Wednesday, February 2, 2011 at 7:...
*February 2, 2011 by Rachal*

**algebra**

multiplication of algebraic expressions. I searched Google under the key words "multiplication 'algebraic expressions'" to get these possible sources: http://www.intmath.com/Basic-algebra/2_Multiplication-algebra.php http://cstl.syr.edu/FIPSE/Algebra/Unit2/multiply.htm (Broken...
*July 12, 2007 by klar maesen*

**algebra**

I have a algebra question not to good at this? here goes.. the fuction w (d)=0.112d approximates the amount in centimetres of water that results from D cm of snow melting. find the amount of water that results from snow melting depths of. 19cm 38cm 95cm
*December 20, 2009 by please help*

**9th grade algebra/Ms Sue**

Okay Ms. Sue. I am in 8th grade but I am taking Algebra with 9th graders. I am very confused with my previous problem. I have asked my Dad but we are both getting confused. Now I have come up with 22. Is this my correct answer?
*August 22, 2012 by Reed*

**Algebra **

Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed, is Sally correct?
*March 2, 2015 by Help is needed *

**8th Grade Algebra**

You know how to solve quadratic equations using algebra, graphs and the quadratic formula. Sometimes one method of solving is more convenient than another method. Describe how you would solve each equation. Give reasons for you answers. A) 16x^2 = 1600 B) x^2 - 350 = 0 C) x^2...
*March 30, 2009 by Joy*

**math**

solve for y? z=0.3(y-6)^2 please can you explain your working, Many thanks, Wendy. * Algebra - drwls, Friday, November 20, 2009 at 9:40am (10/3)z = (y-6)^2 y = sqrt[(10/3)z] +6 = 1.826 sqrt z + 6 * Algebra - wendy, Friday, November 20, 2009 at 9:47am I'm sorry. Really don't ...
*November 20, 2009 by wendy*

**Algebra**

Hi,I have a linear model with equation p = 5.1t - 28, where p is the number of breeding pairs of birds and t is the year. I need to use algebra to find the year in which the linear model predicts the breeding pairs will exceed 500. Any help appreciated.
*July 15, 2010 by Si*

**Algebra**

Essay: Show all work. A school designer wants to create a white board with the ptimal dimensions to enhance if one side of the white board x^-5xy+8y inches. Write an algebra expression for the area of the area of the area of such a white board, simplify it, and correct units ...
*July 27, 2012 by Anna&Karen*

**algebra**

I need the algebra sentence for the following problem..Adam is 3 times as old as Cynthia and Fred is 16 years younger than Adam. One year ago, Adam's age was twice the sum of Cynthia's and Fred's age.Find their present age.
*November 26, 2012 by Sue*

**statistics**

A professor knows that in her class 37% of the students have passed an Algebra course, 29% have passed an English course, and 21% have passed both courses. If one student is selected at random from this class, find the probability that: c) the student did not pass algebra.
*April 24, 2011 by Confused*

**algebra**

each week, mandy's algebra teacher gives a 10 point math quiz. after 5 weeks, mandy has earned a total of 36 points for an average of 7.2 points per quiz. she would like to raise her average to 9 points. on how many quizzes must she score 10 points in order to reach her goal?
*May 17, 2010 by lily*

**algebra**

Explain in your own words what it means for an equation to model a real world situation an give an example. -it is right to say that when given a problem, we want to identify the quality of the problem we want to find, translate form word to algebra, and make up an equation ...
*November 15, 2011 by lan*

**Algebra 1**

Hello, could someone help me solve/show the following algebra problem? If there's not enough info given, indicate that no solution can be found. 'Two planes leave chicago - one traveling due east and the other due west. The first travels 100 miles per hour faster than the ...
*June 3, 2010 by Charlezetta*

**9th grade algebra**

i'm trying to find someone tht knows what a diamond problem in algebra is. it is a diamond shape divided into 4 equal parts in the example it has an xy at the top an x on the left and a y on the right and x+y on the bottom. then on problem #1 it has a 15 at hte top an 8 at the...
*September 2, 2008 by ryan*

**algebra**

Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed, is Sally correct? ...
*March 1, 2015 by dumb boy*

**algebra**

Mr. Smith has 100 students in his Algebra classes. The grades of a quiz are normally distributed with a mean of 70 and a standard deviation of 4. Sally claims that 75 students scored between 66 and 74 on this quiz. Given that this is normally distributed, is Sally correct? ...
*March 1, 2015 by please help me*

**Math (Algebra/Pre-Algebra)**

For which situation would you expect to see negative correlation? A. The size of a pizza and how much it costs. B. The age of a whale and the amount of food it consumes. C. The street address for a home and the amount of mail it recieves. D. The number of people at a game and ...
*June 4, 2009 by Samantha*