Saturday
May 23, 2015

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

Algebra
Use the distributive property to multiply. (x-9)5 This problem is extremely confusing to me. Can you do this and explain the steps?
Saturday, May 23, 2015 at 1:49am

Algebra
Check my answer please! A tower of blocks has 1 block in the top row, 3 blocks in the next row, 5 blocks in the next row, and so on. there are six rows in all. how many blocks are in the tower? 11 blocks 47 blocks 36 blocks *MY ANSWER* 49 blocks
Friday, May 22, 2015 at 11:43pm

Algebra
Is factoring equations a basic 9th grade skill?
Friday, May 22, 2015 at 9:35pm

Algebra
Simplify 9^12 divided by 9^3 This is really confusing so can you give me the steps too?
Friday, May 22, 2015 at 8:49pm

algebra
Multiply. (2n^2+5n+4)(2n-4) (explain it to me) A. 4n^3-2n^2+28n-16 B. 4n^3+12n^2-2n-16 C. 4n^3+2n-12-16 D. 4n^3+18n^2-28n-16 please show me how you found it!
Friday, May 22, 2015 at 9:30am

Algebra
Danielle has decided to raise rabbits but has been warned that the number of rabbits she will have will grow very quickly. Danielle started out with 15 rabbits and the function y=15*1.8x models the number of rabbits she will have after x months. Which graph represents the ...
Friday, May 22, 2015 at 9:24am

algebra
The loudest sound measured one night during a hockey game was 112 dB. The loudest sound measured during a hockey game the next night was 118 dB. What fraction of sound intensity of the second game was the sound intensity of the first game?
Friday, May 22, 2015 at 12:12am

Algebra
Find B - A if the graph of Ax + By = 7 passes through (2,1) and is parallel to the graph of 2x - 7y = 3.
Thursday, May 21, 2015 at 10:07pm

algebra
Joy is planning a party. One game she decides to play is bobbing for apples. She divides her apples into three amounts, thinking that putting a different number in each same-sized bucket might make ti more fun. Three friends are helping her. Joy puts 1/2 of her apples plus 1/2...
Thursday, May 21, 2015 at 7:09pm

Algebra
Simplify √1/5 - √5
Thursday, May 21, 2015 at 6:30pm

Algebra
Find the perimeter and area of a rectangle with a width of 2√7 - 2√5 and a length of 3√7 + 3√5
Thursday, May 21, 2015 at 6:02pm

algebra
would this be correct -3squared + ( (5 (8-6) ) / 2 + 45 ) / 5 =9 + ((5x2)/2)+9 -9 + 5 + 9 =23
Thursday, May 21, 2015 at 4:30pm

algebra
would this be correct -3squared + ( (5 (8-6) ) / 2 + 45 ) / 5 =9 + ((5x2)/2)+9 -9 + 5 + 9 =23
Thursday, May 21, 2015 at 2:15pm

algebra
a4b+a2b3 please factor and explain the process
Thursday, May 21, 2015 at 2:02pm

algebra
A car traveling on a highway is 60 miles away from home after 1 hour, and is 300 miles away from home after 5 hours. What is the rate of change of the car’s distance over time?
Thursday, May 21, 2015 at 11:20am

Algebra 2
Orlando is making a design for a logo. He begins with a square measuring 20 inches on each side. The second square has a side length of 16 inches, and the third square has a side length of 12.8 inches. Which square will be the first square with a side length of less than 8 ...
Wednesday, May 20, 2015 at 3:33pm

ALG 2
Im doing the conic section in algebra and cant figure out how to determine the extent of the graph. Which the graph equation is x^2/16-y^2/25=1 can you please help me this is the only thing i dont understand how to figure it out.
Wednesday, May 20, 2015 at 3:15pm

algebra
The time,t, required to drive a certain distance varies inversely with 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 disatcne at 85 miles per hour? about 7.08 hours? about 5.00? or 8.47 hours? please show me ...
Wednesday, May 20, 2015 at 2:26pm

algebra
Simplify x / 6x - x^2 Please show me how you did it so i can understand! Another one, Simplify x^2 - 3x - 18 / x + 3 This is a fraction Another one, k + 3 / 4k - 2 (this is a fraction) * 12k^2 + 2k - 4)
Wednesday, May 20, 2015 at 1:24pm

Algebra
(8m^7 - 10m^5) / 2m^3 Answer choices - 4m^7 - 5m^5 4m^4 - 10m^5 8m^7 - 10m^2 4m^4 - 5m^2, please show me your work Simplify into one fraction -2/x+3 - 4/x-5 answer choices - -6x - 2/ (x+3)(x-5) 6(x-1)/(x+3)(x-5) -6/(x+3)(x-5) Simplify into on fraction 7/x-3 + 3/x-5 answer ...
Wednesday, May 20, 2015 at 12:45pm

algebra
Simplify x / 6x - x^2 Please show me how you did it so i can understand!
Wednesday, May 20, 2015 at 12:13pm

algebra
Distributive property 8E+3(5-E)=10 38=-3(4y+2)+y
Wednesday, May 20, 2015 at 11:52am

Algebra 2
I have tried solving this problem over and over but I'm still not sure with my answer. The question is sqrt2 / 2 + sqrt2. I think the answer is 1/sqrt2 + sqrt2 because you have to cancel out the common factors.
Wednesday, May 20, 2015 at 11:03am

pre-algebra
9z+8+3(2-4z)-9=-40
Wednesday, May 20, 2015 at 9:27am

College Algebra
If you are looking at the horizon, you can determine the distance you are from the horizon in miles, D, from a height, h, in feet by the equation of D = . If you are standing on a mountain top that is 12,000 feet in elevation, how far are you from the horizon?
Tuesday, May 19, 2015 at 9:17pm

algebra
1) a line has a slope of 5. it passes through the points (1,4) and (6,y). what is the value of y? explain how you found your answer. 2) write a direct variation equation that relates x miles to y kilometers.
Tuesday, May 19, 2015 at 8:19pm

algebra
B. The variables x and y vary directly. Use the values to find the constant of proportionality and write and equation that relates x and y. 1. y - 4; x = 6 2. y = 2; x = 10
Tuesday, May 19, 2015 at 8:13pm

Algebra
A. Tell whether x and y show direct variation. Explain your reasoning. 1. x = y - 2 / 9 2. 5x - 3y = 0 My answer: Yes because 5 and 3 pass through the origin (0).
Tuesday, May 19, 2015 at 8:12pm

Algebra 2 Honors
I have a question on my math homework. The problem is: Suppose r varies jointly as s and t. If s = 20 when r = 140 and t = -5, find s when r = 7 and t = 2.5. I used r = kst. I plug in and get 140 = k(20)(5). I then multiply and get 140 = k(-100). I then divide each side by -...
Tuesday, May 19, 2015 at 6:30pm

pre-algebra
55=8-6t+3+2t
Tuesday, May 19, 2015 at 4:55pm

algebra
Jason has volunteered at the pet shelter 3 more times than Keith. Jason has volunteered 12 times. Which equation represents this situation? A 12 + k = 3 B 12k = 3 C k + 3 = 12 D 3k = 12 i chose D because inverse operation and that come out as k = 4, so that means keith ...
Tuesday, May 19, 2015 at 12:58pm

Math/Algebra
Help please. Find the Volume of the cylinder. use 3.14 for pi. Diameter of 34 M height of 27 M
Tuesday, May 19, 2015 at 12:35pm

algebra
Simplify into one fraction -1/x-9 - -2/x+7 (these two are fractions)
Tuesday, May 19, 2015 at 12:26pm

algebra
Divide x^2 - 4 over x-8 over x - 2 so it's a fraction over 1/2 of a another fraction
Tuesday, May 19, 2015 at 12:25pm

algebra
Simplify x^2 - 3x - 18/x+3 Answers x-3 x-6 where x doesn't equal -3 x-6 where x doesn't equal 6 1/x+3 where x doesn't equal -3
Tuesday, May 19, 2015 at 12:23pm

algebra
for number 2, i thought it was y = 5x because if you multiply 5 by any of the numbers in the x colum, it equal y Also for number 3, could you further explan, are you saying the answer is zero? As for number one, is the answer 1/x-3 where x does not equal 3,
Tuesday, May 19, 2015 at 12:19pm

algebra
Simplify x + 7 / x^2 + 4x - 21 (This is a fraction) Answer choices - 1/x-3; where x does not equal 3.-7 x - 3; where x does not equal 3 1/x-7; where x does not eaul 7 x-7 Do the data in the table represent a direct varation or an inverse varition? writie an equation to model ...
Tuesday, May 19, 2015 at 11:49am

algebra
Divide (-5w^10 + 10w^8+5w^6) / (5w^5) the answers are -w^5 + 5w^3 = w -5w^5 + 10w^8 + w -w^5 +10^8+ 5w^6 and -w^5 + 2w^3 + w
Tuesday, May 19, 2015 at 11:19am

College Algebra
If you are looking at the horizon, you can determine the distance you are from the horizon in miles, D, from a height, h, in feet by the equation of D = . If you are standing on a mountain top that is 12,000 feet in elevation, how far are you from the horizon?
Tuesday, May 19, 2015 at 10:47am

algebra
(x^2 + 6x + 9 over x - 1 over x^2 - 9 over x^2 - 2x +1. So it's a fraction over a fraction.
Tuesday, May 19, 2015 at 10:25am

algebra
Simplify -14x^3/x^3 - 5x^4 it too hard for me to understand
Tuesday, May 19, 2015 at 10:07am

algebra 2 and trig
The scores on a chemistry test are normally distributed. Approximately 95 percent of the scores fell between 78 and 92. What is the standard deviation for this distribution?
Monday, May 18, 2015 at 7:45pm

Algebra
a business has $8600 invested at 12% and $7000 at 9.5% interest. How much interest is earned in one year?
Monday, May 18, 2015 at 7:05pm

Algebra 2
a company plans to sell embroidered hats for $15. the company's financial planner estimates that the cost, y, of manufacturing the hats is a quadratic function with a y-intercept of 7,920 and a vertex of (150, 9,000). what is the minimum number of hats the company must ...
Monday, May 18, 2015 at 6:55pm

algebra
Vic buys a car with 10000 miles on it . He drives 100 miles a week. Eva buys a car with 7000 miles on it she drives an average of 400 miles a week. How many miles will the cars have on them when the number of weeks is the same. m= 100w + 10000 m= 400w + 7000
Monday, May 18, 2015 at 10:41am

Algebra
-2,3,1,4,5,9,.... which is most likely the 10th value in the sequence??
Sunday, May 17, 2015 at 10:54pm

algebra
The distance D , in miles to the horizon from an obsever's point of view over water or flat earth is given below , where H is the height of the point of view in feet . if a person whose eyes are 5ft above ground level is standing at the top of hill 45 ft above 'flat&...
Saturday, May 16, 2015 at 11:52pm

Algebra
Christy drove 300 miles on her vacation. She drove 1.25 time faster on the second 150 miles of her trip than on the first. Which expression represents the time she spent driving? Let x be her speed for the fist half. a. 375/x b. 33.5/x c. 270x d. 270/x
Saturday, May 16, 2015 at 8:47pm

Algebra
A rectangle has a width which is 2/3 of its length. Find its length if its perimeter is 80 cm. Find its dimensions. P = 2L + 2W 80cm = 2L + 2 (2/3)L 80cm =6/3 L + 4/3L 80cm = 10/3 L 80. 3/10 = L 24cm =L or L= 24 cm W = 2/3 .24 W = 16 cm
Saturday, May 16, 2015 at 8:08pm

algebra
a motorist left a city for a 295 mile. 7 hour trip. for the first part of the trip, the average speed was 40mph. for the remainder of the trip, the average speed was 55mph. How long did the motorist drive 55mph
Saturday, May 16, 2015 at 7:22pm

algebra
5+ 3/5 ________ 2- 4/7 simplify
Friday, May 15, 2015 at 9:18pm

algebra
in a recent year a single person could expect to pay 4160 in income taxes on an adjusted gross income of 26,000. how much more tax should the person expect to pay if her adjusted gross income increased by 4,000 knowing that this would not move her into the higher tax bracket.
Friday, May 15, 2015 at 9:02pm

algebra
The intensity I of light bulb measured in watts per square meter (w/m^2), varies inversely as the square of the distance d from the light bulb . . suppose I is 45 w/m^2 when the distance is 5 m . find the intensity when the distance from the light bulb is 7 m away
Friday, May 15, 2015 at 5:40pm

Algebra 1
algebra questions I don’t need any of the open a textbook answers. I have worked hard to get my algebra done but these last units have turned my mind into mush. I don’t just want answers I need an explanation. Any help would be wonderful Thank you 2) what is the ...
Friday, May 15, 2015 at 3:12pm

Algebra, please help
1.add or subtract. (4x²+15x-3)-(-3x²+5) A:7x²+15x-8*** B:x²+12x+2 C:x²+15x-8 D:7x²+8 2.Simplify the polynomial. -3f²+4f-3+8f²+7f+1 A:5f²-11f+2 B:11f²+11f+2 C:5f²+11f-2 D:-5f²+11f-2*** 3.Add or Subtract. (2x²+6x+1...
Friday, May 15, 2015 at 1:12pm

algebra
A private plane traveled from Seattle to the rugged wilderness at a average speed of 176 mph. on the return trip the average speed was 308 mph. if the total traveling time was 5 hours. How far is Seattle to the wilderness? please help
Thursday, May 14, 2015 at 11:01pm

algebra
A relay team is going to participate in a 150-mile bicycle race. One rider averages 12 miles per hour. The second averages 16 miles per hour. Write a function modeling their trip, where x = the hours ridden by the first bicyclist and y = the hours ridden by the second bicyclist.
Thursday, May 14, 2015 at 3:32pm

algebra - please help!
Liam is single. He has no children and an adjusted income of $26,700. Find his income tax. A. $1,735 B. $2,185 C. $2,732.50 D. $1,835 Please walk me through on how you got the answer..
Thursday, May 14, 2015 at 11:42am

Algebra please help
1.(9m+6)+(-5m-6) A:4m+12 B:14m+12 C:14m-12 D:4m*** 2.(3r²+7r+1)+(4r²-8r-2) A:7r²+15r-1 B:7r²-r-1*** C:7r²-15r-3 D:-r²-r-1 3.(6h+1)-(9h+4) A:-3h-3*** B:15h-5 C:-13h+3 D:-3h+5 4.(m²-m-4)+(m-5) A:m²-2m+9 B:m²+2m-9 C:m²-2m-9 D:m&...
Thursday, May 14, 2015 at 1:12am

Algebra 104
1. A square piece of cardboard measuring 60 inches on a side is made into a rectangular box by cutting identical squares from the four corners and then folding up the flaps. Let represent the length of the side of the discarded square. Write a formula for the volume of the box...
Wednesday, May 13, 2015 at 11:46pm

Algebra 2 Honors
Hey, we recently started a topic in class that I don't understand well, I just want to post 6 of the problems and ask if they're right or not (some of them I have no idea how to do). 1. If a varies directly as b and b = 18 when a = 27, find a when b = 10. For this I ...
Wednesday, May 13, 2015 at 7:56pm

algebra - please help!
Dexter purchased a flat screen TV for $3,300. With a down payment of $900,he was able to finance the balance at 8% for 5 years. Find the quarterly payments. A. $601.10 B. $201.83 C. $146.78 D. $826.52
Wednesday, May 13, 2015 at 7:30pm

Algebra
bicyclist rides 30 miles against a wind and returns 30 miles with the wind. his average speed for the return trip is 5mph faster. how fast did the cyclist ride against the wind if the total time of the trip was 5 hours
Wednesday, May 13, 2015 at 6:16pm

Algebra
Write and Graph a function that represents the situation. Your $35,000 annual salary increases by 4 percent each year.
Wednesday, May 13, 2015 at 5:46pm

Pre-Algebra
1. Given the function rule f(x) = x² – 3x + 2, what is the output of f(–2)? 2. Suppose you earn $12 each time you mow the lawn. Write the function describes the relationship between your total earnings E and the number of times you mow the lawn, m? 3. Mia ...
Tuesday, May 12, 2015 at 11:13pm

Algebra
A ladder base is 3 m away from a house, and the fully extended ladder is 5 m long when it leans against the house. How high does the ladder reach on the house?
Tuesday, May 12, 2015 at 11:06pm

algebra
brittany wrote a computer program that generates two random numbers between one and eleven when she runs t what is the probability that the first value will be more than 9 and the second will be less than 3
Tuesday, May 12, 2015 at 8:56pm

Algebra II
what value of x makes the following equation true? -5(x + 10)2=390,625 All work must be shown and explantions must be in complete sentences.
Tuesday, May 12, 2015 at 8:03pm

Algebra ii
What value of x makes the equation true? (x-16)4/3=81
Tuesday, May 12, 2015 at 7:54pm

algebra
by 3 pounds of oranges apples for 7.50 the graph shows the price for regular apples what is the unit rate for each type of apples? organic 2.50/pound regular 3.00/pound organic 0.40/pound :regular 0.50/pound organic 2.51/pound regular 2.00/pound none of the above
Tuesday, May 12, 2015 at 7:45pm

ms sue! Algebra help
What are the graphs of y = cos x and y = sec x in the interval from -2pi to 2pi?
Tuesday, May 12, 2015 at 4:54pm

algebra 2
I'm having troubles understanding how to find the directrix,focus and roots of the parabola y=x^2-5x+4. If you could explain it to me so I understand for myself I'd appreciate it.
Tuesday, May 12, 2015 at 3:12pm

algebra
Find the equation of a horizontal line that goes through the point (5, -3). Explain your answer
Tuesday, May 12, 2015 at 9:10am

Algebra
Write y = 3x - 1 in function notation and evaluate the function at x = 0, x = 3, and x = z. Please label your values and use the correct notation when posting.
Tuesday, May 12, 2015 at 8:51am

Algebra
Find the area of the label on a can with a radius of 5.1 centimeters and a height of 2.9 centimeters
Monday, May 11, 2015 at 9:57pm

ALGEBRA help
What is the graph of one cycle of a sine curve with the given characteristics? Using the form y = a sin bθ, what is an equation for the sine curve? amplitude = 4, period =1/4 pi , and a < 0.
Monday, May 11, 2015 at 8:44pm

Algebra 2 Honors
Well, I'm having trouble on some of my homework questions and looking to get help as soon as possible on one of them about inverse variation. 1. If y varies inversely as x and y = -3 when x = 9, find y when x = 81. I will use the equation y = k/x but I have no idea how to ...
Monday, May 11, 2015 at 7:32pm

ALGEBRA help ASAP
for which value of theta if tan theta equal to sin theta? A. pi/2 B. 2pi C. pi/3 D. 3pi/2 Thanks.
Monday, May 11, 2015 at 4:25pm

Algebra ll
Please help..I do not understand any of this... Analyze the graph of the function f(x)=x^2+x-42/x+3 a.)what is the domain? b.)what is the equation of the vertical asymptote of f(x)? c.)What is the equation of the horizontal or oblique asymptote? d.) choose the correct graph.
Monday, May 11, 2015 at 2:57pm

Algebra ll
Please help!! I do not understand any of this!! Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f. Degree 3; zeros: 8, -6-i
Monday, May 11, 2015 at 11:35am

Algebra ll
Please help!! I do not understand any of this!! Form a polynomial f(x) with real coefficients having the given degree and zeros. Degree 4; zeros: 2, multiplicity 2; 3i
Monday, May 11, 2015 at 11:33am

Algebra ll
Please help!! I do not understand any of this!! Information is given about a polynomial f(x) whose coefficients are real numbers. Find the remaining zeros of f. Degree 4; zeros: 8,-6-i
Monday, May 11, 2015 at 11:30am

Algebra ll
Please help!! I do not understand any of this!! Use the remainder theorem to find the remainder when f(x) is divided by x+4. Then use the factor theorem to determine whether x+4 is a factor of f(x). f(x)=4x^6-64x^4+x^2-18
Monday, May 11, 2015 at 11:28am

Algebra 1
A teacher graded the tests for each of her students. She calculated a mean grade of 80 and a standard deviation of 3. One of her students, Katrina, had a z-score of 2. What grade did Katrina get on the test?
Sunday, May 10, 2015 at 8:58pm

algebra
Assume the national debt D increases at an annual rate of 5% and that the debt in 2000 was 57 billion dollars. This means that D = 57(1.05t ), where t is the number of years after 2000. In what year will the debt have doubled?
Sunday, May 10, 2015 at 4:41am

algebra
find the amount of money in an account after 10 years if a principal of $2500 is invested at 3.5% interest compounded quarterly. show work please I got 2250 but my book shows 3542.27
Sunday, May 10, 2015 at 1:36am

algebra
In 2018, the number of people employed as registered nurses in the U.S. is expected to be 3,200,000. This represents a 22% increase over the number of people employed as registered nurses in 2008. Find the number of registered nurses employed in 2008. Round to the nearest ...
Saturday, May 9, 2015 at 8:01pm

algebra
In 2009, Ford sold 4,817,000 new vehicles worldwide. This represents a 28.32% decrease over the number of new vehicles sold by Ford in 2003. Use this information to find the number of new vehicles sold by Ford in 2003. *show work please, thank you
Saturday, May 9, 2015 at 7:05pm

algebra
Megan's science teacher gave each student in her class a 20.0 gram sample of sedimentary rock. Each student is required to verify the rock sample by taking four mass measurements. Which measurement is the most accurate of the four recorded?
Saturday, May 9, 2015 at 6:11pm

algebra
what is 360/100 into a decimal show work please
Saturday, May 9, 2015 at 5:35pm

algebra
In mixing a weed killing chemical a 40% solution of the chemical is mixed with an 85% solution to get 20 L of a 60% solution. How much of each solution is needed?
Saturday, May 9, 2015 at 10:55am

algebra
a line has a slope of 5. it passes through the points (1,4) and (6,y). what is the value of y?
Friday, May 8, 2015 at 11:39pm

algebra
City population N and M club, any club membership is an even number of members of both clubs prove m <n
Friday, May 8, 2015 at 5:02pm

Pre-Algebra Please do Help !!!
Which function rule represents the data in the table? x= -3,-2,-1,0,1 y= 1,-2,-5,-8,-11 a. y= -3x-8 b. y= 1/3x-8 c. y= 1/3+8 d. y= 3x +8 i dont know if it is b or c
Friday, May 8, 2015 at 6:53am

Algebra 2
Find the exact value of each expression if 0 degrees < theta < 90 degrees If tan (theta) = 1/2 , find cos(theta) If cos(theta) = 8/17, find csc (theta) Find the exact value of each expression is 180 degrees < theta < 270 degrees 7. If tan (theta)= 1, find cos(theta)
Thursday, May 7, 2015 at 8:13pm

Pre-Algebra (Probability)
The theoretical probability of spinning an even number on a spinner is 2 — 3 . The spinner has 8 even-numbered sections. How many sections are on the spinner?
Thursday, May 7, 2015 at 7:31pm

algebra
Alonzo wants to buy a bike for $260. He can pay for it in 8 months if he pays $60 now and $25 each month. If he were to pay $60 now and $20 each month, how many more monthly payments would it take to pay for it?
Thursday, May 7, 2015 at 6:24pm

math collage algebra
A Norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window (see figure). The perimeter of the window is 12 feet.
Thursday, May 7, 2015 at 1:28pm

algebra
An advertisement for a steel-belted radial tire states that this tire delivers 14% better gas mileage. If the present gas mileage is 25.5 mpg, what mileage would you expect if you purchased these tires? Round your answer to the nearest tenth of a mile per gallon. I know the ...
Thursday, May 7, 2015 at 1:27pm

Algebra
An artist paints t shirts. It takes 15 mins to set up and 40 mins to clean up. Once it is set up it takes the artist 12 mins to paint the shirt. What would an equation be for how many shirts he makes in 127 mins?
Thursday, May 7, 2015 at 7:32am

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