Tuesday
February 21, 2017

Homework Help: Math: Algebra

Recent Homework Questions About Algebra

Algebra
there are three nickels three dimes and four quarters in your pocket. you randomly pick three coin and place them on the counter. the first two coin are a dimes, and the third is quarter
Monday, February 20, 2017 by Anshil

algebra
A car cost $25,750.00 and depreciates in 20% per year how much will the car be worth in 5 years
Monday, February 20, 2017 by Anonymous

Algebra
Hello...can you please let me know if I worked this problem correctly: 10Z2^ + 8z - 7 = 16z2^ + 48z - 12 0 = 6z2^ + 30z - 5 a = 6 b = 30 c = -5 x = 30 + or - (30 2^ -4(6)(-5) / 12 x = -30 + 31.937 / 12 = .161 x = -30 - 31.937 / 12 -5.161 Am I on the right track? Thank you
Monday, February 20, 2017 by Joyce

Algebra 1
When dividing two numbers written in exponential notation, what do you do with the exponents of 10? add subtract multiply divide I flat out do not know, can somebody please tell me what it is and why?
Monday, February 20, 2017 by Fading

Algebra
can you please help me with this problem: 30y2^ + 60y + 300 = 5y2^ + 120y -24 25y - 60y + 324 = 0 used the quadratic equation (used the square root) x = -60 (60)2^ - 4(25)(324) / 50 x = -60 (3600 + 32,400)/50 x = -60 +or minus(-28,800) / 50 x = -60 + 169.706 / 50 = 109.706/50 ...
Monday, February 20, 2017 by Angela

Algebra 1
Suppose a spherical asteroid has a radius of approximately 9.0 x 10^2m. Use the formula 4/3*pi r^3 to find the approximate volume of the asteroid. 2.57 * 10^9 m^3 1.07 * 10^4 m^3 2.54 * 10^10 m^3 4.51 * 10^10 m^3 I've worked 4/3*pi*10^2 = 900 meters... but now I'm confused, ...
Monday, February 20, 2017 by Fading

Algebra Word Problem
Solve algebraically using one variable: Find three consecutive odd integers such that the product of the first integer and the third integer is equal to nine more than twelve times the middle integer.
Monday, February 20, 2017 by Tony

Algebra
The perimeter of a rectangle is 46 inches, and the area is 120 square inches. Find the length and width of the rectangle.
Monday, February 20, 2017 by Tony

Algebra
4.5cm is 75% of
Monday, February 20, 2017 by GeniusTigeress

Algebra
Solve algebraically using one variable: Find three consecutive odd integers such that the product of the first integer and the third integer is equal to nine more than twelve times the middle integer.
Monday, February 20, 2017 by Tony

Algebra
Can you please confirm that my answer is correct to this problem? 80x2^ - 96x + 27 =0 I am using the quadratic formula to solve... I would put the formula here but I can't put the square root sign in here. My answer is -1.33 and -2.22 Is this correct? thank you
Monday, February 20, 2017 by Lucille

Algebra
2.1/ x+1 4/5 = 3/10x The fraction 2.1/x+1 4/5 equals 3/10x. Find out what x equals.
Monday, February 20, 2017 by GeniusTigeress

Algebra
Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its width.
Monday, February 20, 2017 by Tony

algebra
system of equations c-3d=27 4d+10c=120
Monday, February 20, 2017 by Rocky

Algebra
I spent hours on this and I still cant figure it out please help me: Let L1 be the line passing through the points Q1=(4, 2, −3) and Q2=(5, 5, −5). Find a value of k so the line L2 passing through the point P1 = P1(3, 7, k) with direction vector →d=[−3, −3...
Monday, February 20, 2017 by shana

Algebra
Solve algebraically using one variable: Find three consecutive odd integers such that the product of the first integer and the third integer is equal to nine more than twelve times the middle integer.
Monday, February 20, 2017 by Russell

Linear algebra
Let L1 be the line passing through the points Q1=(−2, 1, 1) and Q2=(−4, 4, 0) and let L2 be the line passing through the point P1=(−6, −6, 0) with direction vector →d=[9, 6, 3]T. Determine whether L1 and L2 intersect. If so, find the point of intersection Q. ...
Monday, February 20, 2017 by shana

Math Algebra
Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its width.
Monday, February 20, 2017 by Tony

Algebra/Math
How much dry substance is there if we have 150g of 8% of a solution of this substance.
Monday, February 20, 2017 by GeniusTigeress

Algebra
I don't understand how to do this problem: A savings account is started with an initial deposit of $500. The account earns 1.5% interest compounded annually. (a) Write an equation to represent the amount of money in the account as a function of time in years. (b) Find the ...
Monday, February 20, 2017 by JustMe

Algebra - PLEASE HELP!
Can you PLEASE help me with this problem? I do not understand... The area of a triangle can be found by using the formula A=1/2bh. The area of the triangle can be represented by the expression -17.5x2^ - 138.5x - 27. The triangle's base length is greater than its height. If ...
Monday, February 20, 2017 by Leroy

College Algebra
For fx=6x-5 and gx=3x^2-4 find the following (fog)(x) Having problems understanding (gof(x)=g(f(x))= 3(f(x))^2-4 3(6x-5)^2-4 (36x-9-25)-4
Monday, February 20, 2017 by Lisa

algebra
Ms. Allison drew a box-and-whisker plot to represent her students scores on a midterm test. Lowest value=44 Lower quartile=47 Median=72 Upper quartile=81 Highest value=96 Jason received 47 on the test. How does Jason's score compare to his classmates? A. About 25% scored ...
Monday, February 20, 2017 by faith

Algebra
Ratio reduced to lowest terms 139 hours to 2 days
Monday, February 20, 2017 by Faith

algebra
complete table for the following equation 2x+y=9 x y -3 1 4 5 -1
Sunday, February 19, 2017 by sofia

Algebra
Chloe wants to invest a total of $39000 into 2 savings account, one paying 6% per year in interest and the other paying 9% per year in interest (a more risky investment). If after 1 year she wants the total interest from both accounts to be $2730. How much should she invest in...
Sunday, February 19, 2017 by Litzy

Algebra
150g of sugar was used to make a bottle of 8% syrup. How much water was used to make this bottle of syrup? How much syrup is there in this bottle?
Sunday, February 19, 2017 by Anonymous

Algebra
Find three consecutive integers whose sum is 138 by writing and solving an equation.
Sunday, February 19, 2017 by Bonnie

Algebra I
3 bags of chips and 5 bottles of water cost $31. A chip costs one dollar less than 3 bottles of water. Find the cost of each.
Sunday, February 19, 2017 by Elizabeth

algebra
Finde three consecutive integers such that the sum of the first and third is 16
Sunday, February 19, 2017 by kath

Maths/Algebra
Samantha went shopping and spent half her money on a T-shirt and a third of her money on a scarf. She returned with $15. How much money did she have to begin with? My working out: s = money to begin with s - 1/2 s - 1/3 = 15
Saturday, February 18, 2017 by Lizzie

Algebra
Find All Real Numbers 4x3 = 16x (4x cubed)
Saturday, February 18, 2017 by Tony

Algebra
James has a 6-ft board that is 24 in. wide. He wants to cut it into five pieces to make a small bookshelf with two shelves. The front and back will not be covered. What should be the dimensions of the bookshelf to maximize the volume and use all of the 6-ft board?
Saturday, February 18, 2017 by Anonymous

Algebra
A page should have perimeter of 42 inches. The printing area within the page would be determined by top and bottom margins of 1 inch from each side, and the left and right margins of 1.5 inches from each side. What should be the overall dimensions of the page in order to ...
Saturday, February 18, 2017 by Anonymous

algebra
The population of viruses in an influenza culture after t hours is given by the function x(t) = 3et/1.7 The cost y in dollars for a new automated microscope to count x viruses in a sample is y(x) = ln 2x Create the composite function that calculates the cost y in dollars of ...
Saturday, February 18, 2017 by Ciara

Algebra
Mrs. Sue. Thank you for your words of kindness and not putting me down when I had a question. I have looked through your site and I do ind that you certainly are reputable. I apologize for my rudeness to you yesterday and I confessed to my mom. Whew! I feel better now. I do ...
Saturday, February 18, 2017 by Promise Keeper

Algebra I
Four pens cost $2 less than two markers. Three pens and nine markers cost $54. Find the cost of each.
Saturday, February 18, 2017 by Susie

Algebra
Need help trying to solve this question. Using the variables x and y determine the two equations you would need to solve for the maximum area to enclose a patio given 28 feet of fencing.
Friday, February 17, 2017 by Ebony

algebra 2
. Which equation is in standard form and represents a line with slope –1 through the point (–3, 5)? a.x+y=2 b.y=-x+5 c.-x+y=5
Friday, February 17, 2017 by maylea

Algebra
A frame is 4.8 inches wide and 1.5 inches tall. If it is enlarged to a width of 9.6 inches, then how tall will it be?
Friday, February 17, 2017 by Lisa

Algebra
Can you please help to solve this problem: 3n2^ + 10n = 5 Thank you
Friday, February 17, 2017 by Lucille

Algebra
can you help me graph the function y=-5(3^x)please? f(x)=-5(3^x) f(x)=-5*3 f(x)=-5(9) =-15 =-45 Is this the correct way to work this problem out and how to I graph?
Friday, February 17, 2017 by Michelle

Algebra! Please Help!
What are the next three terms in the sequence? -6, 5, 16, 27,... A. 38, 49, 60 B. 37, 47, 57 C. 36, 45, 54 D. 36, 46, 57
Friday, February 17, 2017 by Lilly

Algebra 1
Which is the correct simplification of 2.2*10^4/8.8*10^9 written in scientific notation ? a) 0.25*10^5 b) 2.5*10^6 c) 0.25*10^-5 d) 2.5*10^-6 I think it is either a or c, but please help. * means multiplication sign Thank You !
Friday, February 17, 2017 by Connections Academy student

algebra
Annabelle and Navene are multiplying (4275)(4372). Annabelle's Work (4275)(4372) = 4^2 + 375 + 2 = 4577 Navene's Work: (4275)(4372) = 42â‹…375â‹…2 = 46710 Is either of them correct? Explain your reasoning.
Friday, February 17, 2017 by emily

Algebra
The charge to rent a trailer is $20 for up to 2 hours plus $8 per additional hour or portion of an hour. Find the cost to rent a trailer for 3.2 hours, 4 hours, and 7.6 hours.
Friday, February 17, 2017 by Keisha

Algebra
Simplify: (x-1/2)-(x-2/2)+(x-3/2)-...-(x-100/2)=
Friday, February 17, 2017 by dian

algebra
Determine the length of the missing side of each right triangle. Show your work. 1)a=15; b=?; c=20 Answer is b= 5√7 2)a=9; b=12; c=? Answer is c= 15 **How do I show my work to come up with each of these two answers? THANK YOU!!
Thursday, February 16, 2017 by Tim

Algebra
In a two-digit number the units’ digit is 7 more than the tens’ digit. The number with digits reversed is three times as large as the sum of the original number and the two digits. Find the number.
Thursday, February 16, 2017 by Lola

Algebra 1
I have this extra credit assignment for Algebra 1. It's due tomorrow and I really need help on this. I had a slope of 0.222 for one line and 0.081 for the other line. (y=0.081 * x + 215.378) (y=0.222 * x - 43.829) My intersection point is about 1800,320. I have to solve for ...
Thursday, February 16, 2017 by Kate_Mack_Son

Math - Calc/Algebra/Trig
I'm trying to find all the points on the graph y=4/3cos^3x-cosx where the tangent line is horizontal. I took the derivative, which gave me: -4cos^2(x)sin(x)+sin(x) Now I need to solve it for x and I'm not sure how. Can you help?
Thursday, February 16, 2017 by Jamie

Physics
In really stormy weather and with the right conditions, the sky would dump a bunch of hail, making the roads rather hazardous. A choir director was driving his car in these conditions and going a tad fast under the circumstances. His car began to slip on the balls of ice in ...
Thursday, February 16, 2017 by Alisa

Algebra
I just need to know how to set this problem up. You are given 28 feet of fencing and need to enclose a patio on all four sides. The following variables are defined: Let X represent the width (in feet) and Y represent the length (in feet)of the enclosed patio. Let P represent ...
Thursday, February 16, 2017 by Ebony

Math (Algebra 2)
Ann and Tom want to establish a fund for their​ grandson's college education. What lump sum must they deposit at a 9.39​% annual interest​ rate, compounded annually​, in order to have ​$20,000 in the fund at the end of 10 ​years? I cannot get the right answer.
Thursday, February 16, 2017 by John

Algebra
For this question I answered part A. But I am lost on what I am suppose to do for question B. Given d varies jointly as r and the square of s and inversely as t and d =8 when r=3, s=2, and t=6. A. What is the constant of proportionality? Show your work. 8=k(3)(2)^2 / 6 K=4 B. ...
Thursday, February 16, 2017 by Ebony

Algebra
Find three consecutive odd integers such that the sum of 4 times the largest is -191
Thursday, February 16, 2017 by Dee

pre algebra
Which function rule represents the data in the table? x|-3|-2|-1|0|1 y|-1|2|5|8|11 The answer choices are 1. y=-3x-8 2. y= 1/3x-8 3. y= 1/3x+8 4. y= 3x+8 Please state the answer and how you got it. I want to be able to do this on my own in the future. Thanks. Also, I chose D(4).
Thursday, February 16, 2017 by olay

algebra
Sagar and akash run 2km race twice.Akash completed the first round 2 minutes earlier than Sagar.In second round Sagar increased his speed by 2 km/h.Sagar finished 2 minutes earlier than Akash.Find their speed running first round.
Thursday, February 16, 2017 by saurabh

algebra
f(x)=3x^2-2 and g(x)=e^2x find g o f(x)
Thursday, February 16, 2017 by chipo

Algebra/ please help!!!!
Wage $17hr-- Annually/$28,285.28 Apartment Value 17.34hrs/pay period toward apartment $934/month Annually $11,208.00 Total Annually $39,498.28 Working 40 per week/52 weeks per year I can't figure out the breakdown of how they arrived at these numbers. PLEASE HELP
Wednesday, February 15, 2017 by Esther

Algebra/ please help!!!!
WAGE---$ 17.00-an hour---------ANUALLY---28,285.28 APARTMENT VALUE 17.34hrs/pay period towards an apartment value of $934/month----ANUALLY---$11,208----TOTAL​-------$39,493.28. My question is: first of all, I get, 17X40= $2,720-not 28,285.28, above. ALSO, I am trying to ...
Wednesday, February 15, 2017 by Esther

algebra
The divisor and qutient of the number 6123 are same andthe remainder is half of the divisor. Find the divisor.
Wednesday, February 15, 2017 by Mandar

Algebra
factor the following quadratic expressions, if possible. k^2-12k+20 6x^2 + 17x - 14
Wednesday, February 15, 2017 by Miranda

Algebra
Two cars leave town at the same time going in opposite directions. One travels 44 mi/h and the other travels 47 mi/h. In how many hours will they be 69 miles apart?
Wednesday, February 15, 2017 by Peter

Algebra 2
Find an equation of variation in which y varies inversely as x and the following is true: y=31, when x=4 Originally, I mixed up the equations of inverse and direct variation, and got 31=m(4) ----- b Obviously, I got it wrong, but I've gone ahead and redid the problem, and I'd ...
Tuesday, February 14, 2017 by Jennifer

Algebra 2
It takes 12 hours for 8 people to paint a house. How long will it take 3 people to do the job? I'm not really sure how to go about solving this problem.
Tuesday, February 14, 2017 by Jennifer

algebra
Eye color is determined by genetic combinations.There are 4 possible genetic combinations: RR=Brown,RL=Brown,LR=Brown,LL=Blue.Show a 4 square Punnett square that models these conclusions. Thank you.I hope someone can show me the solution.
Tuesday, February 14, 2017 by Anneliese

Pretty weird Algebra
In the word of five, where could you see the number of 4?
Tuesday, February 14, 2017 by Peter Pan

Algebra
One of the polynomials below cannot be factored using integers. Write “prime” for the one trinomial that does not factor and all the factors for the two that do. a) x2– 5x + 6 b) x2+ x + 6 c) 2x2– 2x + 12
Tuesday, February 14, 2017 by Tony

Algebra
An electrician charges a customer $260 for 4 hours. He charges one customer $150 for 2 hours. How much does he charge for his service fee, x, and his hourly charge, y, to his customers? Thank you!
Tuesday, February 14, 2017 by SK

Algebra
Solve the following algebraically using one variable: Find three consecutive even integers such that the product of the smallest integer and the middle integer is eight less than eleven times the larger integer.
Tuesday, February 14, 2017 by Tony

Algebra
If you walk 4/5mile and then jog 3/8 mile what is the total distance covered how much farther did you walk than jog
Tuesday, February 14, 2017 by Lynette

Algebra
A department store is offering a coupon for 21 off for any purchases over $100. Construct a piecewise function for the actual cost, C, of the purchase as a function of the original purchase price, P. C= ? ,if 0 <P </100
Tuesday, February 14, 2017 by Julie

College Algebra
Consider the amount of gas in your car during a road trip. You start out with 45 gallons and drive for 4 hours, leaving you with 27 gallons in the tank. You stop for lunch for 2 hours and then drive for 2 more hours, leaving you with 18 gallons. t= time C (t)=_____ if 0 </ ...
Tuesday, February 14, 2017 by Kriss

algebra
the discriminant of a quadratic equation is -5 which answers describes the number and type of solution of the equation? 2 complex solutions <-- 1 real solution 1 complex solution 2 real soultions
Tuesday, February 14, 2017 by jass

algebra
what are the values of 2-5x=-3x^2 a= -5, b = 3, c = 2 a = -3, b = -5 , c = 2 a = 2, b = -5, c = -3 <-- idk:/ a = 3, b = -5, c = 2
Tuesday, February 14, 2017 by jass

algebra
Want to make sure I am doing this correctly. Use the Intermediate Value Theorem for polynomials to show that the polynomial function f(x)has zero between the numbers given. f(x)=3x^2-x-4 ; 1 and 2 3(1)^2-1-4= - 2 below zero 3(2)^2-1-4= 6 above zero Am I doing this problem correct
Tuesday, February 14, 2017 by Eric

Algebra
find the distance between the pair points (-2, -3) and (-12,-19)
Tuesday, February 14, 2017 by Anonymous

algebra
if you have a 15 ft ladder and angle it 75 degrees how far from the house will the base of the ladder be
Tuesday, February 14, 2017 by Anonymous

algebra
if you have a 15 ft ladder and angle it 75 degrees how far from the house will the base of the ladder be
Tuesday, February 14, 2017 by Anonymous

algebra
A truck leaves a depot at 11 A.M. and travels at a speed of 54 mph. At noon, a van leaves the same place and travels the same route at a speed of 64 mph. At what time does the van overtake the truck?
Tuesday, February 14, 2017 by kristy

algebra
The length of a rectangle is 4 inches more than twice the width. If the area of the rectangle is 48 square inches, what is the length of the rectangle? SHOW WORK. Thank you!!
Monday, February 13, 2017 by Tim

algebra
Cindy put 1and 2 thirds cups of peanuts and 1 and 3/5 cups of popcorn into a bag what's the expression represents the total number of cups of peanuts and popcorn Cindy took to camp
Monday, February 13, 2017 by Tina

college algebra
A rock is thrown upward with a velocity of 20 meters per second from the top of a 37 meter high cliff, and it misses the cliff on the way back down. When will the rock be 4 meters from the water, below? Round your answer to two decimal places.
Monday, February 13, 2017 by sharena

college algebra
A rock is thrown upward with a velocity of 20 meters per second from the top of a 37 meter high cliff, and it misses the cliff on the way back down. When will the rock be 44 meters from the water, below? Round your answer to two decimal places.
Monday, February 13, 2017 by sharena

algebra
Please show me how to completely factor the following expression: 5c^2-24cd-5d^2 Thank you
Monday, February 13, 2017 by Anneliese

Beginning algebra
How do I write this sentence The product of a number n and eight more than the number As a variable expression? So far I got n+8 but the part "more than the number" threw me off.
Monday, February 13, 2017 by Wyatt K.

Algebra
Identify the property that justifies the statement (5+7)6=30+42 Would this be the distributive property or Inverse Prop of Multi? Kind of confused Thank you
Monday, February 13, 2017 by Angie

algebra
The width of rectangle A is half of its height write an algebraic expression for the width of rectangle a
Monday, February 13, 2017 by brady

Pi
How do u describe how to check an algebra question??? I need help ASAP
Monday, February 13, 2017 by Jayd

Math/pre-algebra
A scale drawing has a scale of 1/4in.:6ft. Find the length on the drawing for each actual length. 12. 18ft 13. 66ft 14. 204ft
Monday, February 13, 2017 by Kiana

algebra
A man flies a small airplane from Fargo to Bismarck, North Dakota --- a distance of 180 miles. Because he is flying into a head wind, the trip takes him 2 hours. On the way back, the wind is still blowing at the same speed, so the return trip takes only 1 hours. What is the ...
Monday, February 13, 2017 by marc

Algebra
Translate into a variable expression. Then simplify the expression. Twice the sum of four times a number n and thirty. Can you explain how to write it as a variable expression pls Also what does "and" stand for here?
Monday, February 13, 2017 by Aj

into to algebra
You need a 45% alcohol solution. On hand, you have a 150 mL of a 15% alcohol mixture. You also have 70% alcohol mixture. How much of the 70% mixture will you need to add to obtain the desired solution?
Monday, February 13, 2017 by marc

Pre-Algebra
He said it to his sisters, he said it to his brothers, what did the witty raindrop elclaim to all the others?
Monday, February 13, 2017 by Elise Baker

Algebra
When mushrooms are dried, they lose 80 percent of their mass. What weight of mushrooms must be picked to get 1 kg of dry mushrooms?
Monday, February 13, 2017 by Anna

pre algebra
what is the ratio 8 to 60 written as a fraction in lowest terms
Monday, February 13, 2017 by Ariel

Algebra
What is an equation for the line with slope 2/3 and y-intercept 9? A. Y=2/3x B. y=9x C. Y=2/3x+9 D. y= 9x+2/3 Q2. Suppose Y varies directly with X, and Y=24 when x=8. what is the value of Y when x =10. A. 10 B. 30 C. 80 D. 240 .
Monday, February 13, 2017 by Please Help

Algebra
A ball is thrown into the air with an upward velocity of 26 feet per second. Its height, h, in feet after t seconds is given by the function h(t) = –16t^2 + 26t + 5. a. How long does it take the ball to reach its maximum height? Round to the nearest hundredth. b. What is the...
Monday, February 13, 2017 by Wes

College Algebra
suppose you go on a road trip, driving at a constant speed of 75 miles per hour. create an equation relating distance ,d, in miles and time traveled, t, in hours. d= __?__
Monday, February 13, 2017 by lilly

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Homework Help: Math