Saturday
August 29, 2015

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

algebra
How many possible license plates can be formed consisting of three letters in the first letter must be either M,N, or P?
Friday, August 28, 2015 by Jacqueline

algebra
write an expression to represent each situation. then find the value of each expression to solve the problem. 1. on saturday, mrs. armor bought 7 pairs of socks for $3 each, and a sweater for her dog of $12. then she found a $5 bill on the sidewalk. over the course of saturday...
Friday, August 28, 2015 by anon

Algebra 2
You need to earn $539 per week to afford the new car you want to purchase. Your work week is 46 hours. You get 1.5 times the regular hourly rate for overtime (anything over 40 hours). How much does your hourly rate need to be? (use step 1-4).
Thursday, August 27, 2015 by Anonymous

Pre-algebra
Is 7/8 an irrational number
Thursday, August 27, 2015 by Rio

Algebra
a worker has a new pump and an old pump. the new pump can fill a tank in five hours and the old pump can fill the same tank in 7 hours write and solve an equation for the time it will take both pumps to fill one tank if the pumps are used together.
Thursday, August 27, 2015 by Kayla

Algebra
(1,12) (2,76) (3,108) (4,124) (5,132) (6,136) (7,138) (8,139) (9,139.5) What is the rule or equation?
Thursday, August 27, 2015 by Anonymous

Algebra
Written in simplest form, 3x^3-27xy^2 / 12x^2+36xy is: (1) x+3y/4 (2) x+4y/3 (3) x-3y/4 (4) x-3y/4(x+3y) My work: 3x^327xy^2/12x^2+36xy=3x(x^2-9y^2/3x(4x+​12y)=x^2-9y^2/4(x+3y)
Thursday, August 27, 2015 by Anonymous

algebra
simplify. 3 - 2(4 - 7) ÷ 9 i dont know what to do after i subtract 4 and 7 which is -3 then multiply 2 which is -6 then i don't know what to do afterwards, i know pemdas so -6 divided by 9 cannot be so please help on that. the integers from -3 to +3 can be used in ...
Thursday, August 27, 2015 by anon

algebra
Simplify. 3 - 2(4 - 7) ÷ 9 i dont know what ta dooooo after i subtract 4 and 7 which is -3 then multiply 2 which is -6 then i don't know what to do afterwards, i know pemdas so -6 divided by 9 cannot be so please help on that. the integers from -3 to +3 can be used ...
Thursday, August 27, 2015 by anon

Algebra
Whenever Deven and Laura owe each other money, they "pay" each other using stickers. They've agreed that a Harry Potter sticker is worth 49 dollars and a Twilight sticker is worth 35 dollars. They can even use stickers as "change" if one person overpays...
Wednesday, August 26, 2015 by Mr. Alexander

Algebra
Agents J and K work in a long hallway with 4000 equally-spaced, consecutive offices. The agents decide to walk toward each other so they can meet and have lunch together. Agent J has recently been relocated from office 2013 to office 1. His former office neighbor, agent K, is ...
Wednesday, August 26, 2015 by Mr. Alexander

Algebra (Percentages)
Annie loves giving away puppies. When her friend Bobby walks by, she instantly gives him 50% of her puppy stash. Bobby, stunned with this shower of puppies, gives back 20% of his total. Annie counters by giving Bobby 50% of her new puppy total. Bobby responds by giving Annie ...
Wednesday, August 26, 2015 by Mr. Alexander

Algebra
The Master Chief collects spiders and starfish. If his spiders have 8 legs and his starfish have 5 legs, how many starfish must he have given that his spider/starfish collection totals 19 creatures and 116 legs?
Wednesday, August 26, 2015 by Mr. Alexander

Algebra
A wooden plank is 5 feet long and 1 1/2 inches thick. To make the plank 1 1/8 inches thick, a carpenter removes the same thickness of wood from the top and bottom of the plank. How many inches does the carpenter remove from the top of the plank? Express your answer as a common...
Wednesday, August 26, 2015 by Mr. Alexander

Algebra
The ratio of the number of junior high students to the number of senior high students in a school is 7 to 9. If there are 100 more senior high students than junior high students, how many junior high students are there?
Wednesday, August 26, 2015 by Ratios

Ap algebra
Question 1: if a function is undefined at a point can that point be its domain. Explain Question 2: explain what is meant by the minimum value of a function
Wednesday, August 26, 2015 by Karen

Algebra 2
the sum of the angles in a triangle is 180 degrees. if A:B:C = 2:3:3, what is C-A?
Wednesday, August 26, 2015 by Anonymous

Algebra
Need help to an math problem. James have 15 cases, with 15 boxes per case, and 15 brands per box. Write an exponential expression using a base of 15 to show how many total brands there are in a stack of cases. How would I write that?
Wednesday, August 26, 2015 by Anonymous

Geometry
solve for x and AC if C is between A and B, AC = 3x + 55, CB = 2x and AB = 65. Draw figure and show algebra work. Can someone help me please I dont quiet get it?
Wednesday, August 26, 2015 by SiSi

algebra
is this correct?: -4^4= -256 (-5)^2= 25 (-3)^5= -243 ( I don't get the meaning of the parantheses) thank you!
Wednesday, August 26, 2015 by ruby

Algebra 1
A teacher buys 50 train tickets for a school trip for a total cost of $1,200. She buys x number of student tickets for $20 each. She also buys y number of adult tickets for $30 each.
Wednesday, August 26, 2015 by tommy

algebra
what is -4^4 thank you!
Wednesday, August 26, 2015 by maria

Algebra
This sheet it says representing functions as grass I have a graph I also have a table and says make a table graph the function Y equals X plus one when the domain is (1,2,3,4)? How do I begin ??
Wednesday, August 26, 2015 by Kenzie

Algebra
What is the equation expressions for 12 more than a number b? I said 12x + b I Need help ASAP!
Wednesday, August 26, 2015 by Kenzie

Algebra
What is the equation expression for the difference of twice a number G and 10 is 24 ? I was thinking it was 2g * 10=24 but I'm sure it's highly wrong
Wednesday, August 26, 2015 by Kenzie

Algebra
write an expression to show the difference of twice X and 3 then find the value of your expression if x equals negative 2 Help again pls
Wednesday, August 26, 2015 by Chandler

Algebra
you count the number of times your heart beats in 15 seconds define a variable and write an expression for the number of times your heart beats in a minute HELP
Wednesday, August 26, 2015 by Chandler

algebra, numerical operation
Danny made a mistake in the following problem. Each line shows the steps Danny took in order to solve the problem. The mistake was made in Line ___. Only input the number of the first incorrect line. Line 1 21 + 35 ÷ 7 + 6(2) Line 2 21 + 5 + 6(2) Line 3 21 + 11(2) Line ...
Wednesday, August 26, 2015 by ANDY

Algebra 2
1. A bag contains 12 red checkers and 6 black checkers. You will randomly select two checkers, one at a time, without replacement. (a) In how many ways can you select two checkers so that at least one of the checkers is red? List the ways. (b) What is the probability that you ...
Wednesday, August 26, 2015 by Matt

Algebra
I have another one What is the value of 42-2(3x5+1)? I thought you worked the parentheses first which would be 16, then subtract 42 from 2 and you get 39, you would then multiply 16x39 and you would get 624. But the answers I have to choose from are 8, 1, -16 and -21. What am ...
Wednesday, August 26, 2015 by Kelly

Algebra
Which equation represents "fifteen more than r is sixty-one? a. r + 61 = 15 b. r + 15 = 61 c. r - 15 = 61 d. r + 61 = 15 I think its b or c because b is 46 and c is 76
Wednesday, August 26, 2015 by Kelly

algebra
Suppose a box is to be constructed from a square piece of material of side length x bt cutting out a 3-inch square from each corner and turning the sides. Express the volume of the box as a polynomial in the variable x.
Wednesday, August 26, 2015 by Yo!

Algebra
Multiply and simplify. Assume any factors you cancel are not zero. 8/(15x+24y) times (5x+8y)/10 = ?? I multiplied straight across and got (45x+64y)/(150x+240y) but then I wasn't sure where to go from there.
Wednesday, August 26, 2015 by Lillian

pre algebra
IN the question 20-2.7+1+(3)+10 am I right when I PEMDAS 20-14+4+10= 20-28=-8?
Wednesday, August 26, 2015 by dalton

algebra
I get confused with the parentheses; 7-3(4-5) I know that the next step is: 7-3(-1) and then I get stuck.....help me. Thank you
Tuesday, August 25, 2015 by erikah

Algebra
Multiply and simplify. Assume any factors you cancel are not zero. 8/(15x+24y) times (5x+8y)/10 = ?? I multiplied straight across and got (45x+64y)/(150x+240y) but then I wasn't sure where to go from there.
Tuesday, August 25, 2015 by Lillian

Algebra
Alexis bought x boxes of cereal for $3 each, including tax, and paid with a $20 bill. Which expression represents the total amount of change she should receive. Whats the answer?
Tuesday, August 25, 2015 by Taylor

Algebra
Why can a subtraction problem be rewritten as an additional problem without changing the outcome? Give a real-world scenario where this might be modeled.
Tuesday, August 25, 2015 by Rima

Algebra
Leticia sets the thermostat in her apartment to 68 degrees. The actual temperature in her apartment can very from this by as much as 3.5 degrees. 16. Write an absolute-value equation that you can use to find the minimum and maximum temperature. 17. Solve the equation to find ...
Monday, August 24, 2015 by DreamEaterMary

Algebra
2m-nx=x+4 Solve for x
Monday, August 24, 2015 by Mom

Algebra
Whenever Deven and Laura owe each other money, they "pay" each other using stickers. They've agreed that a Harry Potter sticker is worth 49 dollars and a Twilight sticker is worth 35 dollars. They can even use stickers as "change" if one person overpays...
Monday, August 24, 2015 by Mr. Alexander

Algebra
Suppose $A$ and $B$ are digits for which the product of the two-digit numbers $\underline{2A}$ and $\underline{AB}$ is 1971. Find the sum of $A$ and $B$. Note: This is LaTeX, so if you need to render it, then go ahead
Monday, August 24, 2015 by Mr. Alexander

Algebra
A vehicle travels on a highway at a rate of 65 mi/h. How long does it take the vehicle to travel 25 mi?
Monday, August 24, 2015 by Mom

Algebra
Find the largest three-digit number that can be written in the form $3^m + 2^n$, where $m$ and $n$ are positive integers.
Monday, August 24, 2015 by Mr. Alexander

Algebra
Can you please help me solve: Fifteen less than twice some number is 115. 15 - 2x = 115 is this the correct equation? thank you
Monday, August 24, 2015 by Rachel

Algebra
How do I rearrange this equation to solve for m1 (step by step) r1/r2 = √m2/m1
Monday, August 24, 2015 by Ken

Algebra
Solve. Show your work. A high school athletic department bought 40 soccer uniforms at a cost of $3,000. After soccer season, they returned some of the uniforms but only received $40 per uniform. What was the difference between what they paid for each uniform and what they got ...
Sunday, August 23, 2015 by anon

Algebra 2
Someone please help me. Cycle Paths, Inc. makes bicycles, tricycles, and unicycles. Last week they made 88 more bicycles then unicycles, and five times as many tricycles as unicycles. If they made 40 more bicycles then tricycles, how many unicycles did they make?
Sunday, August 23, 2015 by Jerry

alGEBRA 1
write the possible range of each measurement . round to the nearest hundredth if necessary. 12lb positive then a mines under it 3% topic is accuracy and precision
Sunday, August 23, 2015 by aneshe

Algebra 2
Standard form for both equation with steps 16x^2-96x+144+25y^2=400 16x^2+192x+576+25y^2=1600
Sunday, August 23, 2015 by Spence

Algebra 2 geometry
Pallelogram ABCD AB= 2x-y CD=7 BC= x+y AD=2 find x & y
Sunday, August 23, 2015 by haley

algebra
1. write an algebraic expression for the word phrase: the quotient of r and 12 a.r * 12 b.r/12**** c.r-12 2. write a word phrase for the algebraic expression: 2t - 9 a.nine fewer than two times a number t***** b.nine fewer than two times a number t c.nine fewer than a number t...
Sunday, August 23, 2015 by someone

Algebra
suppose a pendulum use to show the rotation of the earth has a period of approximately 16.9 seconds. What is the length using formula T=2pi sq root L/32
Sunday, August 23, 2015 by Roslyn

algebra 1
If you place one staple on an electrionc, the balance still reads 0.0 grams.However ,if you place 210 staples on the blance ,it reads 6.80 grams .What is the mass of one staple ? - i dont understand this can u explan it
Saturday, August 22, 2015 by zack

Algebra
Find x √2x/9.81= √(300+x)^2+60^2/150
Saturday, August 22, 2015 by Andrei

Algebra
Factoring x^2+1= (x+1)(x+1)= 5 Trying to see if I am doing it right or have the right answer.
Saturday, August 22, 2015 by Dee365

Algebra
Jorge took a trip to Mexico.Upon leaving he decided to convert all of his pesos back into dollars.How many dollars did he receive if he exchanged 42.7 pesos a rate of $5.30 = 11.1 prsos?
Saturday, August 22, 2015 by Zoe

Algebra
While touring a city ,you see a skyscraper and wonder how tall is it.You see that it is clearly divided into floors.You estimate that each floor is 20 feet high.You count that the skyscraper has122 floors.How tall is this skyscraper ?
Saturday, August 22, 2015 by Alexis

Pre algebra
If a farmer has ten trees and he wants to plant them in 2 rows of five then how does he do it?
Saturday, August 22, 2015 by Paige Turner

Algebra
If you place one staple on an electronic balance,the balance still reads 0.0 grams.however,if you place 210 staples on the balance ,it reads 6.80 grams. What is the mass of on staple?
Saturday, August 22, 2015 by Aby

Algebra
while turning a city, you see a skyscrape and wonder how tall it is. You see that it is clearly divided into floors . You estimate that each floor is 20 feet high . You kill that the skyscraper as 112 floors .how tall is the skyscraper
Saturday, August 22, 2015 by Bob

Algebra
You go to a forest and measure the shadow of a tree as being 6 m long. The shadow of your meter stick is 2 m long .How tall is the tree ?
Saturday, August 22, 2015 by Bob

Algebra
I am working on a review worksheet and there are 2 problems I can't remember how to do. Each question has 6 other questions, so helping me with these will remind me how to do the others! Thank you!! 1.2(x+5) = 1.6(2x+5) and Solve for y a(y+c) = b(y-c) Thank you again! Jeffrey
Saturday, August 22, 2015 by Jeffrey

algebra
A spinner with 10 equally sized slices . The dial is spun and stops on a slice at random. What are the odds in favor of landing on a white slice when white has 7 slices. 2 black and 1 grey
Saturday, August 22, 2015 by djd

algebra
One pipe can fill a tank in 60 minutes and another pipe can fill it in 50 minutes .If these two pipes are open and a third pipe is draining water from the tank ,it take 35 minutes to fill the tank .How long will it take the third pipe alone to empty the tank?
Saturday, August 22, 2015 by ghie

algebra
how much copper and how much iron should be added to 100% pounds of an alloy containing 25% copper and 40% iron in order to obtain an alloy containing 30% copper and 50% iron?
Saturday, August 22, 2015 by bating

Algebra
(5)^-1/2 * (5x)^5/2 (5x)^-3/2 = 1/5*sqrt5x^5(1/sqrt5x^3)= sqrt5x^5/sqrt5*sqrt5x^3= x^2 sqrt5x/ sqrt5 * x sqrt5x= x^2/x sqrt5= x/sqrt 5 Is this correct? If not, where am I going wrong and what is the answer?
Friday, August 21, 2015 by Madeleine

Algebra
(5)^-1/2 * (5x)^5/2 (5x)^-3/2 Simplifies to 1/5 * ã5x^5(1/&​atilde;5x^3) My final answer is x/ã5 is that correct?
Friday, August 21, 2015 by Jane

Algebra
You invested 20,000 in two accounts paying 4% and 7% annual interest, respectively. If the total interested earned for the year was $830, how much was invested at each rate?
Friday, August 21, 2015 by Alex

Algebra
Simplify. -x^3(1-x^2)^-1/2 -2x(1-x^2)^1/2 ------------------------------- x Do I first start by getting rid of the negative exponents? I do not know where to begin. Please help.
Friday, August 21, 2015 by Stephen

Algebra
Factor by removing the common factor with the lesser exponent 2x(x-5)^-3 -4x^2(x-5)^-4 I don't really know how to do this. The final answer I got is: 2x(2x^2-10x+1) -------------- (x-5)^4
Friday, August 21, 2015 by Stephen

Algebra
t^2/ã(t^2+1) - ã(t^2+1) ------------------------- t^2 Is the final answer -1/t^2 sqrt(t^2+1)
Friday, August 21, 2015 by Stephen

linear algebra
It is not possible to meet exactly the recommendation by applying some combination of the three(3) brands of fertilizer because having put d question in a Matrix form. The determinant to know whether it is possible or not is equal to Zero(0) which is inconsistent or does not ...
Friday, August 21, 2015 by John E. Livinus

Algebra
Simplify 5^-1/2 * 5x^5/2 (5x)^-3/2 My final answer was x/sqrt5
Friday, August 21, 2015 by Stephen

ALGEBRA
which of the following are reasonable answer for the product of two negatives and a positive a. 20** b. 10 c. -20 d. -10 Which statement about the product is true 5.5⋅√5 a. The product is rational b. The product is irrational**** c. The product is neither rational ...
Friday, August 21, 2015 by BUBBLES

Algebra
Solve the complex fraction ((t^2/sqrt t^2+1)-sqrt t^2+1))/t^2 Is the LCD to multiply by sqrt t^2+1????? Please help!
Friday, August 21, 2015 by Stephen

Algebra 1
Your cousin is eight years older than your brother three years ago your cousin was twice as old as your brother how old is your cousin now how old is your brother now
Friday, August 21, 2015 by Anonymous

Algebra II
The longer side of a triangle is 3 times the shorter side. The third side is 4 inches longer than the shorter. How long is the short side if the perimeter is more than 39 inches?
Friday, August 21, 2015 by Derick

Algebra
5^-1/2 x 5x^5/2(5x)^-3/2= 1/sqrt5 x sqrt5x^5 x 1/sqrt5x^3= ??? I need to simplify and I need help understanding what the next step is
Thursday, August 20, 2015 by Stephen

Algebra
Rationalize numerator. ((sqrt7)-3/4)(sqrt7+3/sqrt7+3) I got that the answer is 7-9/4sqrt7+12= -2/4sqrt7+12
Thursday, August 20, 2015 by Stephen

Algebra
negative numbers closed under subtraction. True or false My answer is false, is this correct
Thursday, August 20, 2015 by Kyle

college Algebra
Factoring 2a(a+3b) - 5(a+3b)
Thursday, August 20, 2015 by Dee365

Algebra
Square root of 1/9
Thursday, August 20, 2015 by Janey

Algebra
Evaluate the square root of 144 over 25.
Thursday, August 20, 2015 by Janey

Algebra
a plane travelling 600 miles per hour is 30 miles from an airport at 4:58pm. At what time will it arrive at the airport
Thursday, August 20, 2015 by Amina

algebra
find the slope of each line. y=-1/2x=1
Thursday, August 20, 2015 by Emma

algebra
write the slope-intercept form of the equation of the line through the given points. through:(2,3)and(o,5)
Thursday, August 20, 2015 by Gwen

Algebra
I have 2 problems and 1 problem to check on. Write a mathematical expression to represent each situation. Then find the value of the expression to solve the problem. #1 A football team loses 4 yards on each of three plays. Then they complete a pass for 9 yards. What is the ...
Thursday, August 20, 2015 by anon

algebra
wright the slope-intercept form of the equation of the line described though:(-2,5), parallel to y=-9/2x+3
Wednesday, August 19, 2015 by roseann

algebra
wright the slope-intercept form of the equation of the line though the given points through:(4,4)and (3,5)
Wednesday, August 19, 2015 by anthony

algebra
sket the graph of each linear inequality y<-7/3x+4
Wednesday, August 19, 2015 by fred

algebra
simplify each expression 44/9x-7/4+12/7x+1 I worked it out and just went to check it thank you
Wednesday, August 19, 2015 by Ian

algebra
wright the slope-intercept formof the equation of each line given the slope and y- intercept slope=4/5, y-intercept=2
Wednesday, August 19, 2015 by kim

pre algebra
what is the absolute value of -/-16/ thank you.
Wednesday, August 19, 2015 by stella

Algebra 2
A store has sales of $500 in their first month. If sales increase at a rate of $10 each month, they can be modeled by this equation: es002-1.jpg Use summation notation to model and evaluate the sales for the first ten years. Explain your steps.
Wednesday, August 19, 2015 by Anonymous

algebra
what is the absolute value of -(33)
Wednesday, August 19, 2015 by judy

algebra
find the slope of each line 9x+2y=-8 and y=0 thanks who can help me
Wednesday, August 19, 2015 by gwen

Algebra II
For the following, I believe I have the correct answers: 3 * 6 - 3 * 4 = 18 - 12 Substitution Property because you are substituting 18 for 3 * 6 If s = 3, then s * 2 = 3 * 2 Substitution Property because you are substituting 3 for the s Did I name the correct properties? Thank...
Wednesday, August 19, 2015 by Mom50

Algebra
I need help with the following question: (2 + p)(r+ 9) = (r + 9)(2 + p) Is this communtative property? Thank you very much for all your help.
Wednesday, August 19, 2015 by Lori

Algebra II
Can you please let me know if this is the transitive or substitution property? If y = z, then y + 14 = z + 14 Thank you!!!!
Wednesday, August 19, 2015 by Mom50

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Homework Help: Math

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