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February 6, 2016

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

Algebra
A monic quadratic is a quadratic in which the coefficient of the quadratic term is 1. For example, r^2 - 3r + 7 is a monic quadratic, but 3t^2 - 3t + 1 is not. A teacher writes a monic quadratic on the board. Joanie copies the quadratic onto her paper, but writes down the ...
Wednesday, June 3, 2015 by XXX

Algebra
I'm trying ti find the correlation coefficient for the following: The scores of 10 students on their midterm exam (x) and on their final (y) yielded the following data. Σx = 638 Σx2 = 43,572 Σy = 690 Σy2 = 49,014 Σxy = 44,636 Is the answer 0.547? ...
Wednesday, June 3, 2015 by Tony

Algebra
a 2-liter bottle of Pepsi costs $2.19. A six pack of 12 oz cans costs $2.99, which is the better value and what is the total cost per ml? there are 29.6 ml in a fluid ounce.
Wednesday, June 3, 2015 by Megan

Algebra
You drive up to Canada and notice that gas costs $1.31 per liter. The Canadian dollar is worth U.S. $1.02. How much will it cost you in american dollars to fill up your 12 gallon tank? What id the price per gallon up in Canada in American dollars?
Wednesday, June 3, 2015 by Megan

Algebra
The surface area of a box is 160. The length of the box is twice its width as well as 4 less than its height. How many units are in the height of the box? (The surface area of a box is the sum of the areas of all 6 of its rectangular faces.)
Wednesday, June 3, 2015 by XXX

Algebra
the space shuttle does one full orbit every 90 minutes and the earth is 25,000 miles around. What is the apparent speed of the space shuttle?
Wednesday, June 3, 2015 by Megan

algebra
What is the quotient in simplest form? state any restrictions on the variable x^2/x+4 divided by x-2/x^2+x-12
Wednesday, June 3, 2015 by algebra

Algebra 1
Markus is on the wrestling team. Before a match he weights in at 221. Markus knows that the population means is 150 and a standard deviation of 1.65. Calculate the z-score
Wednesday, June 3, 2015 by Bet h

Algebra 1
Markus is on a wrestling team. Before a match, he weights in at 221. Markus knows that the population means is 150 and a standard deviation of 1.68.Calculate the z-score
Wednesday, June 3, 2015 by Bet h

Algebra
you made a 78 on a test. You know the population mean is 85.6 and a standard deviation is 1.25. Calulate the z-score
Wednesday, June 3, 2015 by Bet h

Algebra
Solve. x+2/8 + 1 = 4x/2
Tuesday, June 2, 2015 by Dre

Algebra
PLEASE SOLVE. 9Y/7 =12(Y-2)
Tuesday, June 2, 2015 by Rice

Algebra
Solve. -9(4-k)/12 = 9(k+1)/8
Tuesday, June 2, 2015 by Robert

Algebra
The time, t, required to drive a certain distance varies inversely with the speed, r. If it takes 12 hours to drive the distance at 60 miles per hour, how long will it take to drive the same distance at 85 miles per hour? A. About 7.08 hours B. About 5.00 hours C. About 1.42 ...
Tuesday, June 2, 2015 by AJ

Algebra 1
There are 8 speaking roles in the play. Of the 8 speaking roles, 5 are for males and 3 are for females. After the 8 speaking roles in the play are cast, the remaining cast members will make up the chorus. C. What is the probability that the set of siblings consisting of a ...
Tuesday, June 2, 2015 by Amy

Pre-Algebra
For questions 2 and 3, simplify the polynomial. 2. 2x^2+8-4x+3x-6x^2+7 a.-8x^r-7x+15 b.-4x^2-x+15 c.4x^2+x+15 d.8x^2+7x+15
Tuesday, June 2, 2015 by Richy305

Algebra 1 (probability) Help?
The director decides to add ... n... more females to the cast. D. Write an expression that represents the probability that the set of siblings that consists of a brother and his 2 sisters are all in the chorus. I'm not even sure where to begin with this but can whoever ...
Tuesday, June 2, 2015 by Gabs

algebra 1
There are 8 speaking roles in the play. Of the 8 speaking roles, 5 are for males and 3 are for females. After the 8 speaking roles in the play are cast, the remaining cast members will make up the chorus. C. What is the probability that the set of siblings consisting of a ...
Tuesday, June 2, 2015 by Gabs

Algebra 1
Of the 7 males and 5 females, there are two sets of siblings. One set consists of a brother and sister, and the other set consists of a brother and his 2 sisters. The lead roles are cast randomly. B. What is the probability that a pair of siblings are cast in the lead roles? I...
Tuesday, June 2, 2015 by Gabs

Algebra 1
The cast of a play consists of 7 males and 5 females. There is 1 male lead role and 1 female lead role. A. In how many different ways can the two lead roles be cast? My answer: 12 ways.. would'nt you add the number of females and males total and because there is 1 lead ...
Tuesday, June 2, 2015 by Gabs

Algebra 2
x^2+2x-15 (all over) x-3 equals 3. (x-3) * x^2+2x-15 (all over) x-3 equals 3 *(x-3) x^2+2x-15=3x-9 x^2-x-6=0 (x-3)(x+2)=0 x-3=0 or x+2=0 x={3, -2} I did something wrong here but I'm not sure what I did that is wrong. What is my error? Or is it the solution?
Tuesday, June 2, 2015 by Macin

Algebra 2
The only solution of the equation ... x&2+bx-18 over (divided by) -2x+4 equals 4.... When x=-17. I plugged in the number and replaced x with -17 and it looks like this... (-17)^2 +(-17x)-18 over 38. I just got lost.
Tuesday, June 2, 2015 by Macin

Algebra 2
Michaela is solving rational equations. A. What is the solution set of the equation ... x^2-7x+12 (all over or divided by) x^2+x-12 both equal to 3. What I did first was factor both equations geting (x-4) on the top and (x+4) on the bottom both equal to 3. I am confused on ...
Tuesday, June 2, 2015 by Macin

algebra A055,
World Records in the 1500-m Run. The formula R = -0.075t + 3.85 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.5 min. { Y l Y > 1930 } ?
Tuesday, June 2, 2015 by martin

algebra A055,
World Records in the 1500-m Run. The formula R = -0.075t + 3.85 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.5 min. { Y l Y > 1930 } ?
Tuesday, June 2, 2015 by martin

algebra Please help
.A toy rocket is shot vertically into the air from a launching pad 5 feel above the ground with an initial velocity of 72 feet per second. The height h, in feet, of the rocket above the ground as t seconds after launch is given by the function h(t)=-16t^2+72t+5. How long will ...
Tuesday, June 2, 2015 by Ann

algebra
World Records in the 1500-m Run. The formula R = -0.075t + 3.85 can be used to predict the world record in the 1500-m run t years after 1930. Determine (in terms of an inequality) those years for which the world record will be less than 3.5 min.
Tuesday, June 2, 2015 by martin

Algebra
4w- 11 = 12+ 9(w+2). Solve.
Monday, June 1, 2015 by Taron

Algebra
Solve. -11(5-b)= 3b/6
Monday, June 1, 2015 by KK

Math Algebra 1111
If the domain of a function F is the set of all real numbers and the domain of a function G is the set of all real numbers, under what circumstances do (F+G)(x) and (F/G)(x) have different domains? Whenever G(x) = 0 then the domains would differ. For example, if F(x) =x+2 and ...
Monday, June 1, 2015 by GNTC

algebra
Kevin invested his savings in two investment funds. The amount he invested in Fund A was $3000 less than the amount he invested in Fund B. Fund A returned a 8% profit and Fund B returned a 5% profit. How much did he invest in Fund A, if the total profit from the two funds ...
Monday, June 1, 2015 by Sammy

Algebra II
Can someone please help me with PEMDAS? 4² + [15 ÷ 9 - 3(2)] if you do parentheses first then 15 ÷ 9 doesn't make sense. So I did, 16 + 15 ÷ 3 = 21 Thank you!!
Sunday, May 31, 2015 by Linda

algebra
the length of a rare jeweled rectangular prism has a length equal to its width and a height that is 5 cm greater than its width.volume of the prism is 72 cc a) write a polynomial equation that can be used to solve for the width (x) of the prism b) solve the equation. what are ...
Sunday, May 31, 2015 by ricelys

Algebra
A plane has a cruising speed of 100 miles per hour when there is no wind. At this speed, the plane flew 600 miles with the wind in the same amount of time it flew 400 miles against the wind. Find the speed of the wind.
Sunday, May 31, 2015 by Teneva

algebra--1 question
Multiply. (k+3)/(4k-2)*(12k^2+2k-4) a. 3(k+3)/3k+2 b. 3(k+3)(2k-1)/2 c. (k+3)(3k+2)*** d. (3k+1)(2k+3) Please help? Thanks
Sunday, May 31, 2015 by SkatingDJ

algebra--1 question
The width, w, of a rectangular playground is x + 3. The area of the garden is x^3 - 7x + 6. What is an expression for the length of the playground? a.) x^2 - 3x + 2 b.) x^2 + 3x - 2 c.) x^2 + 3x + 2 d.) x^2 - 3x - 2 Is it b???
Sunday, May 31, 2015 by SkatingDJ

Algebra II
Can you please let me know if I solved the following equation correctly? 1 + 5(n-8) = 2 - (n +5) 1 + 5n - 40 = 2 - n - 5 -39 + 5n = -3 - n 6n = 36 n = 6 Thank you very much!
Sunday, May 31, 2015 by Linda

Algebra 1
A right triangle has 1 leg that is 2" longer than the other leg. the length of the hypotenuse is sqrt 130" Find lengths of legs 0=2x^+4x-126
Sunday, May 31, 2015 by William

Algebra
An investor invested a total of  $1,900  in two mutual funds. One fund earned a  9%  profit while the other earned a  5%  profit. If the investor's total profit was  $143,  how much was invested in each mutual fund? The ...
Saturday, May 30, 2015 by Hen

algebra
3/2x-1 = x+1
Saturday, May 30, 2015 by anonymous

algebra
4p^3 + 20p^2 - 45 = 9p
Saturday, May 30, 2015 by anonymous

Algebra
If(x)=4*absolute value of x-7 what is f(x+1)I have tried many ways and do not understand what to do with the x+1.
Friday, May 29, 2015 by kim

Algebra II
Can you please help me solve the following problem: 4² + [15 + 9 - 3(2)] Thank you.
Friday, May 29, 2015 by Laurie

algebra
add equation (5x^8 -5z^4+5z^2+3)+(3z^6+4 z^4-9z) simplify answer to sum
Friday, May 29, 2015 by Ann

Algebra/Math
Write an inequality to represent the situation: The temperature stayed above -15*. I've already done this test, but I'm doing corrections. Please help? I'm thinking that the -15* is <=.
Friday, May 29, 2015 by Mikasa Ackerman

Algebra
A number n is 150% of number m. Is n greater than, less than, or equal to m?
Friday, May 29, 2015 by Sammi

Algebra
What property can I use to simplify these expressions? 8 * 2 + 3 10 * 3 - 4 by properties I mean Associative, Commutative, Distributive etc.
Thursday, May 28, 2015 by Anon

Algebra
Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to explain the process. Example: Using the associative property of multiplication I can group 8*(3*2) so I get 8*6. Then I multiply 8*6 which is 48.
Thursday, May 28, 2015 by Anon

Algebra
State whether the equation is true, false, or an open sentence. Show your work. 3(2 + -8) = 3(-6 + 12) x + 5 = 22
Thursday, May 28, 2015 by Anon

Algebra
Explain how to use mental math to simplify the expression. a.) 8 * 3 * 2 b.) 8 * 2 + 3 c.) 5 + 8 + 3 d.) 10 * 3 -4 I have to include what properties (associative, distributive etc.) I used to simplify the problems.
Thursday, May 28, 2015 by Anon

Algebra
Together, Larry and Moe scored less than 25 points in the basketball game. If Larry scored 8 points, how many points P did Moe score? I need help finding the answer/understanding the question.
Thursday, May 28, 2015 by Anon

Algebra
What property is shown? 5 + (8 + 7) = (5 + 8) + 7 I think its the commutative property of addition but I'm not sure...
Thursday, May 28, 2015 by Anon

Algebra
Given that -3 <= 7x + 2y <= 3 and -4 <= y - x <= 4, what is the maximum possible value of x + y?
Thursday, May 28, 2015 by XXX

Algebra
On a shopping trip, your sister spends $50 for a pair of jeans, $12 for a pack of socks, and $215 on a pair of tennis shoes. Using the Associative Property of Addition, write the total amount spent on this trip in two different ways. I need help finding the answer.
Thursday, May 28, 2015 by Anon

Algebra
Imagine you owe someone $20. Represent this with an integer. My answer: -20 Imagine someone owes you $50. Represent this with an integer. My answer: 50 Are my answers correct?
Thursday, May 28, 2015 by Anon

Algebra
Use the order of operations to simplify SHOW ALL WORK 13+3*6/9-7 18-6/3+12*3 the "/" sign is a division symbol
Thursday, May 28, 2015 by Anon

Algebra
Please Answer this and show your work! (3h+2)(2h^2-7h+1)
Thursday, May 28, 2015 by PLEASE HELP ASAP

Algebra
Mr. K wants to build a pen in his yard for his dog. He buys 1200 ft of fencing. He concludes that he can only build a rectangle with sides of 400ft and 200ft. Is he correct? If he is incorrect give a counter example. I need help finding the answer.
Thursday, May 28, 2015 by Anon

Algebra
A tower of blocks has 1 block in the top row, 4 blocks in the next row, 7 blocks in the next row, an so on. There are 5 rows in all. How many blocks are in the tower? I need help finding the answer.
Thursday, May 28, 2015 by Anon

algebra
what percentage is 90th percentile?
Thursday, May 28, 2015 by Sarah

Algebra
Jed decided he needs to start exercising more. On Monday, he runs 2 miles. on Tuesday, he runs 4 miles. On Wedsnesday he runs six miles. He continues with this pattern each day for five days, Monday through Friday. How many total miles did he run in the first five days? I need...
Thursday, May 28, 2015 by Anon

algebra..Matrix...math
Hi, Please help me to this question would prove less than 10 hours Athens has a population of n ,m club with any club membership is an even number and the number of members of both clubs to prove and show m<n
Thursday, May 28, 2015 by ali

Algebra
Given the function rule f(x)=x^2-4x+3, what is the output of f(-3)? A- 24 B- 21 C- 0*** D- -3
Thursday, May 28, 2015 by Help Please!

Algebra 2
- Simplify: x^2+6x+8/x^2-2x-8 . Identify any excluded values - Simplify : x^2-36/x^2+6x * x^3+4x^2/x^2-4x-12
Thursday, May 28, 2015 by Jacob

Algebra 1
How do you simplify: x/x^2 - 9 subtracted by x/x + 3 then adding 3/ x - 3. I got common denominators than simplified. I ended with -x^2 + x + 9. Where did I go wrong?
Wednesday, May 27, 2015 by Jay

Algebra 1
How would you solve 5a^2 + 21a/2a^2 + 6a divided by a + 4/4a^2 divided by 5a^3 + 11a^2 + 2a/a + 3?
Wednesday, May 27, 2015 by Jay

Algebra 1
Perform the indicated operations and simplify. 3z^2 - z - 2/6z^2 - 11z - 10 times 4z^2 - 25/2z^2 + 11z + 15 After I factored I got (3z + 2)(z - 1)/(3z + 2)(2z - 5) times (2z - 5)(2z + 5)/(2z - 5)(z + 3) After canceling I got (z - 1)(2z + 5)/(2z - 5)(z + 3). Where did I go wrong?
Wednesday, May 27, 2015 by Jay

Algebra 2
Graph the inequality y < –|x – 4|. Which point is NOT part of the solution?
Wednesday, May 27, 2015 by Anonymous

Algebra
At the end of Week 5 of my basketball team's season, our record is 3 wins and 17 losses. Each week after that, we win 3 games and lose 1 game. At the end of which week will my team have won at least 65% of its games total for the first time in the season?
Wednesday, May 27, 2015 by XXX

pre-algebra NEED HELP!
1.Which solid has one base that is a triangle and three lateral surfaces that are triangles? A:triangular pyramid*** B:triangular prism C:rectangular prism D:rectangular pyramid 2:Sara needs to cover the top and the sides of the cylinder below. 8in 12in About how many squat ...
Wednesday, May 27, 2015 by GummyBears

Algebra 1
a cylinder with radius r and height 2r + 4 contains a cube with edge length r√(2), as shown. what fraction of the cylinder's volume is taken up by the cube (in simplified form)
Tuesday, May 26, 2015 by Casper

algebra
Name the property shown. (3*2*4=(2*3)*4 Commutative Property of multiplication Identity Property of multiplication Associative Property of Multiplication
Tuesday, May 26, 2015 by qwsdrfghy

math algebra 1
The length of a rectangle is 2 m less than the diagonal and the width is 8 m less than the diagonal. If the area is 82 m2, how long is the diagonal?
Tuesday, May 26, 2015 by cc

Algebra
3. Write the ratio as a fraction in simplest from. 28:48
Tuesday, May 26, 2015 by qwertyuiop

algebra 1 a
A high school basketball team has a budget specifically for towels and extra basketballs. A towel costs $4 and a basketball costs $22. Assume the budget is $350 and that 30 towels are needed for the team for the entire season. Use a standard form equation to determine how many...
Tuesday, May 26, 2015 by keren

algebra
given the following functions, find the function values of g(x)=5, find g(-4)
Tuesday, May 26, 2015 by Mary

algebra
-2(x-3) 6x Is that the right answer?
Monday, May 25, 2015 by b

Algebra
A salesperson receives a 3% commission on sales. The salesperson receives $180 in commission. What is the amount of sales? The percent equation is: a/w = p/100 3% substitutes for p, but I'm not sure what 180 would substitute for, a or w?
Monday, May 25, 2015 by Emma Lee

algebra
assume x > 0. what percent of 8x is 5x? i know that the equation is 5x/8x = p/100 and i have to multiply both sides by 100, but i'm not sure how to multiply 100 * 5x / 8x? what is 65% of 80x? again, i know that the equation is a/80x = 65/100 and i have to multiply both ...
Monday, May 25, 2015 by kamryn

algebra
14.2 is 35.5% of what number? 3/5 is 60% of what number? what number is 25% of 7/8?
Monday, May 25, 2015 by kamryn

Algebra
Order from least to greatest: 2.1, 3/5, -0.7, 7/10
Monday, May 25, 2015 by Raven

Algebra
Mr. Johnston needs a shelf to hold a set of textbooks, each 1 3/4 in. wide. How many books will fit on a shelf that is 35 in long?
Monday, May 25, 2015 by Raven

Algebra
Solve for h: 3/7 h = 9
Monday, May 25, 2015 by Mae

Algebra
Solve for t: 15 3/4 = t + 4 5/8
Monday, May 25, 2015 by Mae

Algebra
Solve for h: h + 3/8 = - 1/4
Monday, May 25, 2015 by Mae

Algebra
A set of encyclopedia has 27 volumes. each volume is 1 3/8 inches thick. If the volumes are placed side by side, how long will the set be?
Monday, May 25, 2015 by Mae

Algebra
Find the product Simplify if possible: 12y/13 * 11/24
Monday, May 25, 2015 by Mae

Algebra
Simplify 3/7 - 4/m
Monday, May 25, 2015 by Mae

Algebra
Anita owns a beauty supply store. Every two weeks she receives a supply of shampoo. Every four weeks she receives a carton of nail polishes. Every eight weeks she receives a box of combs, and every twelve weeks she receives a box of hair dyes. If Anita received a shipment of ...
Monday, May 25, 2015 by Mae

Algebra
Find the least common multiple: 2b^2 and 12c^3
Monday, May 25, 2015 by Mae

Algebra
Mary thinks that a quarter-pound hamburger is heavier than a 5 oz hamburger. Explain why she is incorrect.
Monday, May 25, 2015 by Mae

Algebra
Paul needs 3 1/4 yards of fabric to make one tablecloth. How many tablecloths can he make from 20 1/2 yards of fabric. 67 7 My answer 6 66
Monday, May 25, 2015 by Mae

Algebra (VERY IMPORTANT)
2/3(4x+2)^2 +1= 9
Monday, May 25, 2015 by Rach

Algebra
Order 3.21 x 10, 42 x 10^4, and 0.11 x 10^10 from least to greatest
Monday, May 25, 2015 by Mae

Algebra
Write 9.79 x 10^5 in standard notation.
Monday, May 25, 2015 by Mae

Algebra
Write 0.000000474 in scientific notation.
Monday, May 25, 2015 by Mae

Algebra
Write 806,000,000 in scientific notation
Monday, May 25, 2015 by Mae

Algebra
x^7 * y^3 * x^8 * y^2 can you help me find the answer?
Monday, May 25, 2015 by Mae

Algebra
Evaluate. Write in simplest form. 6-b/3a a=10 a=-9 My answer is 2 or 5...I'm not sure
Monday, May 25, 2015 by Mae

Algebra
Find the GCF of 14abc and 28a^2 b^2 c^3 How do I answer this??
Monday, May 25, 2015 by Mae

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Homework Help: Math