Friday
March 27, 2015

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

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College Algebra
A rectangular garden next to a building is to be fenced on three sides. Fencing for the side parallel to the building costs $60 per foot, and material for the other two sides costs $20 per foot. If $1,500 is to be spent on fencing, what are the dimensions of the garden with ...
Thursday, March 26, 2015 at 10:21pm

algebra
if a quadratic equation with real coefficents has a discriminant of 10, then what type of roots does it have? A-2 real, rational roots B-2 real, irrational roots C-1 real, irrational roots D-2 imaginary roots
Thursday, March 26, 2015 at 10:17pm

Math
Jane will receive 18% less of her regular pay when she retires. Her regular pay is $500 per week. a How much would she receive per week if she retires today? answer: 500/18% = 90 500-90= $410 b. Explain how you can make this same calculation using 100%-18%=82% answer: same as ...
Thursday, March 26, 2015 at 10:15pm

pre algebra
Mike placed $750 in a CD of deposit with an annual interest Raye of 3.5%.How much money will there be after 5 interest payments?
Thursday, March 26, 2015 at 9:56pm

algebra II
log(x+2)+log(x-3)=log(x+29)
Thursday, March 26, 2015 at 9:36pm

algebra
if a quadratic equation with real coefficients has a discrimiant of 225, then what type of roots doe it have? imaginary, rational or irrational?
Thursday, March 26, 2015 at 9:26pm

chemistry
What is the theoretical yield of H[2]O (in grams) if 8.3 mol H[2]S were consumed in the above reaction? If 137.1g of water was actually collected after the reaction, what is the percent yield? I have no idea to do this problem. I am not good in math at all and currently taking...
Thursday, March 26, 2015 at 9:03pm

Algebra
Some functions that aren't invertible can be made invertible by restricting their domains. For example, the function x^2 is invertible if we restrict x to the interval [0,inf), or to any subset of that interval. In that case, the inverse function is \sqrt x. (We could also...
Thursday, March 26, 2015 at 8:52pm

algebra
Suppose g(x)=4x^2+8x+13. Does g have an inverse? If so, find g^{-1}(25)
Thursday, March 26, 2015 at 8:44pm

algebra
5/2=×/7
Thursday, March 26, 2015 at 8:37pm

Algebra
If a quadratic equation with real coefficients has a discriminant of 225, the what type of roots does it have?
Thursday, March 26, 2015 at 5:57pm

Algebra 1
Okay so I have 2 problems that i cannot figure out. I have called several people to help but they cant figure it out. Here are the problems. By using only four 6's make an equation that equals 10. Using only four 7's make an equation that equals 10.
Thursday, March 26, 2015 at 5:24pm

algebra
The product of two positive consecutive numbers is 42. What is the smaller number?
Thursday, March 26, 2015 at 3:12pm

algebra
true or false interest is an example of a linear equation
Thursday, March 26, 2015 at 1:22pm

algebra
Show how you would solve by Substitution: 2x + y = 0 x – 3y = -7 Show how you would solve by Elimination: 3x + 4y = 1 5x – 3y = 21
Thursday, March 26, 2015 at 12:19pm

Algebra
Solve the system by substitution. -5x + y = -3 3x - 8y = 24 I'm not sure which equation to choose as I begin to find the y value. Some assistance would be greatly appreciated! Thank you!
Thursday, March 26, 2015 at 9:40am

algebra
please factor this quadratic eaquation thanks
Thursday, March 26, 2015 at 12:47am

algebra
how to factor the quadratic :12x^2+11x-12?
Thursday, March 26, 2015 at 12:42am

algebra
You are asked to use six different letters to make a computer password. Find the number of possible six letter passwords. I think its Either 720 or 165765600
Wednesday, March 25, 2015 at 11:00pm

algebra
im really stuck on this one What is the solution to the linear inequality y ¡Ý 4x - 5 ?
Wednesday, March 25, 2015 at 10:43pm

algebra
Which statistical method best represents this set of data: 1, 2, 5, 2, 3, 7, 300, 5, 3, 3? Which statistical method best represents this set of data: 1, 2, 5, 2, 3, 7, 300, 5, 3, 3? a) mean b)median c)mode d)standard deviation
Wednesday, March 25, 2015 at 10:27pm

algebra
Suppose you are making lunches with a salami, roast beef, turkey, or ham sandwich, a bag of chips or pretzels, and cookies, brownies, or cupcakes. How many different lunches can be made?
Wednesday, March 25, 2015 at 10:23pm

Algebra
whats a linear function?
Wednesday, March 25, 2015 at 8:48pm

Algebra
does the < with a line under it mean the dot is shaded or non-shaded?
Wednesday, March 25, 2015 at 7:58pm

algebra
reduce rational expression x-5/x-9
Wednesday, March 25, 2015 at 7:49pm

algebra
I need help in identifying a graph. I tried textbook and plugging no. with no luck All numbers on right side of (y) line. Bottom of parabola is on x=4 and y=-4, going up f(x) dot is on x=3, y=-3 (left line going up); right line going up is x=5, y= -3; going up again dots on x ...
Wednesday, March 25, 2015 at 6:49pm

Elementary Algebra
Each serving of Planters Lightly salted peanuts contains 95 mg of sodium. This is 50% of the sodium content in each serving of planters. How many milligrams are in a serving of the dry roasted peanuts? I am not sure where to start about solving this problem I need help.
Wednesday, March 25, 2015 at 6:44pm

algebra
I asked a question and it was answered by Steve. He had the numbers wrong. The problem should be sqrt of 18 over (sqrt of 8)-3. not sqrt of 18 -3. I got 2+sqrt of 8. Is it correct?
Wednesday, March 25, 2015 at 2:49pm

Algebra 2
Consider 2 dice being rolled together. Calculate the probability of rolling an even sum
Wednesday, March 25, 2015 at 12:36pm

algebra
x-3=1
Wednesday, March 25, 2015 at 11:14am

Algebra (Math)
Without graphing, name the ordered pair where the graphs of the two linear equations intersect. (Below is the system.) { x = 2 y = -3 Without graphing, name the ordered pair where the graphs of the two linear equationd intersect. (Below is the system.) { y = 2 x + 2y = 10 For ...
Wednesday, March 25, 2015 at 9:50am

Algebra
You have been asked to design an enclosure for a zoo animal with an area of 40m2. Consider -- what type of animal are you designing the enclosure for?
Wednesday, March 25, 2015 at 12:16am

algebra--1 question
A ball is thrown into the air with an initial upward velocity of 45 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 45t + 6. After about how many seconds will the ball hit the ground? (1 point) 3 4 5 6 I get 2.9, so rounding it, it ...
Tuesday, March 24, 2015 at 7:11pm

algebra
how do you simplify (sqrt18)over(sqrt8)-3? And (4-3sqrt2)squared? I tried but get some unreal answer. thanks in advance.
Tuesday, March 24, 2015 at 6:38pm

algebra--1 question
A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r^2 for the surface area of a sphere. 16(pi)x^2 + 16(pi) 16(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 48(pi)x + 16(pi) 36(pi)x^2 + 24(pi...
Tuesday, March 24, 2015 at 4:25pm

algebra
Anais bought 2 1/2 yards of ribbon. She had 1 feet 6 inches of ribbon left after trimming some curtains. How many inches of ribbon did Anais use to trim the curtains?
Tuesday, March 24, 2015 at 3:04pm

Algebra
Translate this phrase into algebraic expression--Three more than the product of 24 and Mabel's height with m to represent Mabels height
Tuesday, March 24, 2015 at 2:26pm

Math, Algebra
A dog is 3/8lb heavier than a squirrel. The squirrel is 3/8lb lighter than the ferret. If the weight of the ferret is 1/2lb , find the weight of the dog? ( x+3/8)+(1/2-3/8)+1/2 was the equation I came up with
Tuesday, March 24, 2015 at 1:36pm

Math, Algebra
Rod a is twice as long as rod b, rod c is 1/12m shorter than rod b. If rod c is 1/6m long, find the total length of Rod a and Rod b I thought it would be 2x+(x+1/12)+1/6
Tuesday, March 24, 2015 at 12:21pm

Math, Algebra
Every month Jen spent 1/4 of her salary and saved 2/5 of the remainder. After 6 months, Jen saved $4320. How much did she earn each month?
Tuesday, March 24, 2015 at 10:06am

Algebra
Simplify each expression. 1.) (b^ 1/6)^3 b^1/6 2.) (2x^-3)^2 (0.2x)^2 3.) (3^7)^2 (3^-4)^3
Monday, March 23, 2015 at 7:50pm

Algebra 1
Simplify each expression. 1.) (b^ 1/6)^3 b^1/6 2.) (2x^-3)^2 (0.2x)^2 3.) (3^7)^2 (3^-4)^3
Monday, March 23, 2015 at 7:36pm

Algebra 1
Simplify. Write each answer in scientific notation. 1.) (3 * 10^5)^2 2.) (3.5 * 10^ -4) ^3
Monday, March 23, 2015 at 7:13pm

linear algebra
Solve using the concept of rank. Is S={−16 −7 −21,2 1 3, 21 9 2} a linearly independent set of vectors in R3? So I know how to find out if this set is linearly indep. But, I don't know how to use row rank to find this out..
Monday, March 23, 2015 at 6:43pm

pls help me pre algebra
2^3 over 2^3 what is the value of this expression? a) 0 b) 1 c) 2 d) 3
Monday, March 23, 2015 at 5:19pm

pre algebra
2x^2 + 8 - 4x + 3x - 6x^2 + 7 what does this simplify to A)-8x^2 - 7x + 15 B)-4x^2 - x + 15 C)4x^2 + x + 15 D)8x^2 + 7x + 15 pls help me reiny steve or damon pls help me
Monday, March 23, 2015 at 4:51pm

Algebra
An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? (Carbon-14 has a half-life of 5,730 years.)
Monday, March 23, 2015 at 4:29pm

algebra 2
1) 4 quinta sqrt(3x+1)-8=0 2) cube root(5m+6)+15=2
Monday, March 23, 2015 at 4:26pm

Algebra
1/5 of the number of children in the village have been vaccinated against polio.if 50 children have been vaccinated, find the number of children in the village
Monday, March 23, 2015 at 3:54pm

algebra
what is the square root of 144?
Monday, March 23, 2015 at 2:53pm

algebra
7.2-8.6+(9.3)-(-5.4)
Monday, March 23, 2015 at 12:48pm

Algebra
Factorize (x+1)(x+2)(x+3)(x+6)-3x^2
Monday, March 23, 2015 at 6:24am

Chemistry, pre Algebra
Glycopyrrolste comes in quantity of 25 vials and has an AWP of $135.the store has an agreement with the contractor to purchase that chemical at the AWP minus 10% the insurer is willing to pay the AWP plus 3 % plus a $4 dispensing fee. a patient on this ensures plan purchases 5...
Sunday, March 22, 2015 at 10:15pm

Pre algebra
1. Prepare 20 mL of dextrose 7.5% weight in volume using dextrose 5% and dextrose 50%. how many milliliters of each will be needed? 2. A chemical comes in quantity of 25 vials and has an AWP of $135.the store has an agreement with the contractor to purchase that chemical at ...
Sunday, March 22, 2015 at 8:38pm

pre algebra
2. 2x^2+8-4x+3x-6x^2+7 a. -8x^2-7x+15 b. -4x^2-x+15 c. 4x^2+x+15 d. 8x^2+7x+15 3. 4x^2+8x-11x+6-5x^2+2 a. -x^2-3x+8 b. -x^2+3x+8 c. x^2-3x+8 d. x^2+3x+8 can u please help me out with these questions steve or damon or ms sue. pls help me
Sunday, March 22, 2015 at 5:20pm

Pre ALGEBRA
Which polynomial does the model represent? The model shows 1 black square block, 2 white thin blocks, 1 black thin block, 1 white small square block, 3 black small blocks. a –x³ + 2x² – 3x + 2 b. x² + x – 2 c. –x² – x + 2 d. –x...
Sunday, March 22, 2015 at 5:10pm

algebra. . please help
Simplify 4 _____ 3+ square root of 5
Sunday, March 22, 2015 at 5:07pm

Algebra 1
what method would you use to solve y=x?
Sunday, March 22, 2015 at 4:08pm

Algebra
hi. i have to factor this expression. 3y^2-16y-12 i got (y-4)(y+1) i know it not right but i don't know what i did wrong.
Sunday, March 22, 2015 at 3:47pm

Algebra
hello.i have to factor this expression. 3y^2-16y-12 i did my work and i got (y-4)(y+1) is it right?
Sunday, March 22, 2015 at 3:33pm

Algebra 2
Compare the graphs of the inverse variations by comparing asymptotes, similar points, lines of reflections, and quadrants. y=-0.7/x and y=-0.9/x
Sunday, March 22, 2015 at 1:58pm

algebra
how many times can a combined 6 be rolled with two standard dice
Sunday, March 22, 2015 at 1:58pm

algebra
a hockey team has red sweater, white swearter, and blue sweater. the team uses red or blue pants and red or white socks. find the number of possible uniforms
Sunday, March 22, 2015 at 1:35pm

algebra
consider rolling one standard six sided die. what is the probability of rolling a 2
Sunday, March 22, 2015 at 1:22pm

algebra
6. Two lighthouses A and B are 25km apart and A is due West of B. A submarine S is on a bearing of 1370 from A and on a bearing of 1700 from B. Draw a picture relevant to the situation, and find the distance of S from A and the distance of S from B( give all your answers to ...
Sunday, March 22, 2015 at 11:13am

Algebra
The frame of a picture is 30 cm by 36 cm outside. If the area of the picture (inner rectangle) is 480 square cm, what is the width of the uniform border?
Sunday, March 22, 2015 at 3:55am

Advanced Algebra
• In how many ways can a chairman, a vice chairman, a secretary, and a treasurer be selected from a committee of ten people? Is it right that i used the equation 10!/4! ? I don't know if the answer 151200 is correct. Can someone help me? Thanks!
Sunday, March 22, 2015 at 2:19am

algebra
if someone withdrew $237 from savings account that totaled $3,000 what percent of money is left in the account?
Saturday, March 21, 2015 at 11:58pm

Algebra
Evaluate¡Ì7x(¡Ì​;x - 7¡Ì7)Show you work. My answer x¡Ì7 ¨C 49 ¡Ìx
Saturday, March 21, 2015 at 11:34pm

algebra
Find a quadratic model for the set of values: (-2,-20), (0,-4), (4,-20). Show your work. y = -3x^2 - 4x + 3
Saturday, March 21, 2015 at 9:29pm

Algebra
Find X. (X+a)(X-b)=X^2+5
Saturday, March 21, 2015 at 2:38pm

algebra
1. A rectangular wooden frame has side lengths 5x and 7x + 1. The rectangular opening for a picture has side lengths 3x and 5x. -What is the area of the wooden part of the frame? Write your answer in factored form. -How can drawing a diagram help you solve the problem? -How ...
Saturday, March 21, 2015 at 2:07pm

Algebra
A wire of length L is cut into two pieces of length X and Y respectively, with Y>X. These pieces are then used to form an upper case "L". If Y/X= (X+Y)/Y, determine the values of X and Y in terms of L.
Saturday, March 21, 2015 at 4:25am

Algebra
Find result of imaginary unit i. 1. (3+4i^259)(2-3i^-22)=? 2. (-i^-38)/(5-4i^-27)=?
Saturday, March 21, 2015 at 3:36am

pre algebra
all 500 students at robinson junior high were surveyed to find their favorite sport how many more students played baseball than soccer soccer is 10% basketball is 27% football is 38% baseball is 25% a. 50 students b. 175 students c. 75 students d. 125 students i think its a or...
Friday, March 20, 2015 at 7:56pm

Pre-Algebra
Equation M: y = 3x + 4 Equation P: y = 3x + 7 Which of the following options is true about the solution to the given set of equations? No solution One solution Two solutions Ininite solutions I thought it was infinite solutions but i got the answer wrong.
Friday, March 20, 2015 at 3:13pm

Advanced Algebra
The arithmetic progression has first term 4 and last term 34. If the sum of its terms is 247, find the number of terms and their common difference.
Friday, March 20, 2015 at 12:27pm

Algebra
The speed of a boat in still water is 20 mph. It travels 24 mi upstream and 24 mi downstream in a total time of 10 hr. what is the speed if the current?
Friday, March 20, 2015 at 3:49am

Algebra
A number of students are planning an end semester party that is projected to cost $224.00. when six students decided to join in at the last minute, this reudced the contribution by $4.80 for each participanting student. how many students were there initially?
Friday, March 20, 2015 at 3:48am

algebra
how do you simplify 3j cubed - 51j squared + 210j? I have the answer as j(j(3j-51) = 210 or is it 3j ((j squared -17j + 70)? thank you for your assistance.
Thursday, March 19, 2015 at 9:03pm

algebra
Consider the equation y=-2√3x-12 -5 a. Write the equation in function notation, y=af(k(x-c))+d. b. Describe the transformations that have taken place from base the function.
Thursday, March 19, 2015 at 5:52pm

Algebra
1.A right triangle has leg of b of length 7 and a hypotenuse of length 11. What is a length of the other leg, a? Round to the nearest tenth if necessary. (1 point) A. 2.0 B. 8.5 C. 13.0 D. 9.6 2. Find the length of a line segment CD with endpoint C at (-3,1) and endpoint D at...
Thursday, March 19, 2015 at 5:21pm

Algebra
(8,3);y=-1/4x+7
Thursday, March 19, 2015 at 9:46am

algebra
how do you multiply two numbers that EACH have a RADICAL in the exponent (7 to the power of the square root of 3 times 7 to the power of the square root of 2)
Thursday, March 19, 2015 at 1:08am

Advanced Algebra
Please Help ; what does the average rate of change tell you about the function on the interval ?
Thursday, March 19, 2015 at 12:27am

algebra
An amusement park charges $8 admission and average of 2000 visitors per day. A survey shows that , for each $1 increase in the admission cost, 100 fewer people would visit the park. Write an equation to express the revenue, R(x) dollars, in terms of a price increase of x ...
Wednesday, March 18, 2015 at 10:17pm

algebra
A rectangular lot is bordered on one side by a stream and on the other three sides by 600m of fencing. Find the dimensions of the lot if area is a maximum.
Wednesday, March 18, 2015 at 10:16pm

algebra
The sum of a number and three times another number is 18. Find the number if their product is a maximum.
Wednesday, March 18, 2015 at 10:15pm

algebra
10w + 11 - 3w -8
Wednesday, March 18, 2015 at 9:40pm

Algebra
A stunt man drops from the top of a 50 foot elevator shaft. His height above ground is determined by the equation h=-16(t)(t)+50. At the moment the stunt man begins to drop, an elevator goes up so that its height above ground is determined by the equation h=34t. After how many...
Wednesday, March 18, 2015 at 8:24pm

Algebra
A stunt man drops from the top of a 50 foot elevator shaft. His height above ground is determined by the equation h=-16(t)(t)+50. At the moment the stunt man begins to drop, an elevator goes up so that its height above ground is determined by the equation h=34t. After how many...
Wednesday, March 18, 2015 at 6:37pm

Algebra 2 (DIVIDEPOLYNOMIALS)
How do you divide this polynomial using long division? (6x^3-17x^2-104x-60) divide by (2x+5)
Wednesday, March 18, 2015 at 5:41pm

algebra
9.6 = [0.128]^2/[0.110][x]^3 solve for x
Wednesday, March 18, 2015 at 4:09pm

algebra
What is the discriminant of the polynomial below? 4x2 + 4x + 1 A. 0 B. -4 C. -12 D. 32
Wednesday, March 18, 2015 at 3:37pm

Algebra help please
Part A: Divide (16x^5y^4 + 6x^3y - 2x^2y - 24x^2y^4) by -2x^2y. Part B: How would your answer in Part A be affected if the x2 variable in the denominator was just an x? Part C: What is the degree and classification of the polynomial you got in Part A? Is this first part right...
Wednesday, March 18, 2015 at 2:34pm

Algebra
Find the fifth term of a geometric sequence whose fourth term is 32/27 and whose seventh term is 256/729.
Wednesday, March 18, 2015 at 9:19am

Algebra
You are driving away from home at a constant velocity of 50 km per hour. The first landmark you see is your favorite park which happens to be 25 km from your house. Which of the following sequences describes the distances you cover at intervals of one hour, starting when you ...
Wednesday, March 18, 2015 at 9:05am

I need help with these please ALGEBRA
1. Consider the leading term of the polynomial function. What is the end behavior of the graph? Describe the end behavior and provide the leading term. -3x5 + 9x4 + 5x3 + 3 2. Evaluate : sqrt7x(sqrtx-7sqrt7) show your work. 3. Solve the equation. Check for extraneous solutions...
Tuesday, March 17, 2015 at 9:43pm

Algebra Help please
In an experiment, a petri dish with a colony of bacteria is exposed to cold temperatures and then warmed again. Find a quadratic model for the data in the table. Type your answer below. show your work. time hours , 0 1 2 3 4 5 6 Population (1000s) 5. 3.0 1.7 1....
Tuesday, March 17, 2015 at 8:33pm

Algebra
The volume in cubic feet of a box can be expressed as (x)=x^3-6x^2=8x , or as the product of three linear factors with integer coefficients. The width of the box is x-2.

Factor the polynomial to find linear expressions for the height and the length. ...
Tuesday, March 17, 2015 at 6:27pm

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