Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 1177594: Let a and b be positive real numbers(That is a≥0, b≥0
a⁴+b⁴≥a³b+ab³
Click here to see answer by greenestamps(13200)

Question 1177715: solve graphically -x+y=2 ^ 2x-y=-1
Click here to see answer by josgarithmetic(39617)

Question 1177769: If P(x)=1+8x-2x^2 represents the profit in selling x thousand Boombotix speakers, how many speakers should be sold to maximize profit? _________

Click here to see answer by MathLover1(20849)

Question 1177820: write an equation of the line containing the given point and parallel to the given line. express your answer in the form y=mx+b (8,9); x+9y=4
Click here to see answer by josgarithmetic(39617)

Question 1177663: The cost (C) of a heating bill is determined by a linear equation. If the cost increases 3 dollars per day for an increase of 6 degrees a year, what is the slope of the graph of the equation? (Use 365 days for the year).
Click here to see answer by greenestamps(13200)

Question 1178278: Given the points (2, 2) and (1, -4), please write the equation of the line in slope intercept form that connects them. *

Click here to see answer by mananth(16946)

Question 1178342: Hello there,
I have been trying to solve this question:
Write the equation of the line which passes through (3, - 1) and is perpendicular to the line with equation 3y - x = 3
I know the correct answer is 3x + y = 8, but I just can't seem to get there. Any help would be great, thank you.

Click here to see answer by mananth(16946)

Question 1178356: For this assignment please answer the following in a Word document and submit the document by the due date via file upload.
Shown below is the solution to the . . .
Click here to see answer by ikleyn(52781)

Question 1178452: Find the slope of a line crossing (-1,2) and (-7,10). Then use it to write an equation for the line in slope- intercept form.
Click here to see answer by Cromlix(4381)

Question 1178486: The Red Cross wants to airlift supplies into a South American country which has experienced an earthquake. Four types of supplies each of which would be shipped in containers are being considered. One container of a particular item weighs 120, 300, 250, and 500 pounds, respectively, for the four items. If the airplane to be used has a weight capacity of 60,000 pounds and xj equals the number of container shipped of item j:
(a) Determine the equation which ensures that the plane will be loaded to its weight capacity.
(b) If it is decided to devote this plane to one supply item only, how many containers could be shipped of each item?
Click here to see answer by greenestamps(13200)

Question 1178538: Suppose a firm manufactures MP3 players and sells them for $50 each, with costs incurred in
the production and sale equal to $200,000 plus $10 for each unit produced and sold. Form the
total cost, total revenue, and profit as functions of the quantity x that is produced and sold
Click here to see answer by ewatrrr(24785)

Question 1178584: a square has an area of 64 inches^2. The formula for the area of a square is A=s^2. Where A is the area and s is the measure of one of it's sides. Find the length of one of its sides.

Click here to see answer by ikleyn(52781)

Question 1178732: what is the slope of the line that passes through the points (-2, -3) and (4, -1)?
I forgot how to do this, and because I haven't done algebra since middle school I cant remember any of it.
Click here to see answer by MathLover1(20849)

Question 1178792: Determine the slope of the line through the given points if a slope is undefined so State. (-4,-1) and (10,-6) what's the slope?
Click here to see answer by ikleyn(52781)

Question 1178882: find the slope-intercept equation that passes through (-1,2) and is perpendicular to the line with the equation 6y-x=12
Click here to see answer by mananth(16946)

Question 1178882: find the slope-intercept equation that passes through (-1,2) and is perpendicular to the line with the equation 6y-x=12
Click here to see answer by Solver92311(821)

Question 1178945: The owner of the Rancho Grande has 2,956 yd of fencing with which to enclose a rectangular piece of grazing land situated along the straight portion of a river. If fencing is not required along the river, what are the dimensions (in yd) of the largest area he can enclose?
Click here to see answer by mananth(16946)

Question 1178973: Solve the linear programming problem.
Maximize P = 15x + 65y
Subject to x + 2y ≤ 16
x ≥ 0
y ≥ 0
What is the maximum value of P?
Please explain this homework question to me step-by-step
Click here to see answer by Theo(13342)

Question 1178970: According to a theory of economics, government revenue can be given by the function f(x) = x(x-100)(x-160)
_______________, 0 < or = x < or = 100 where f(x) is government revenue
240
from a tax rate of x percent. Find the revenue from a tax rate of 40%.
Click here to see answer by greenestamps(13200)

Question 1179162:
Click here to see answer by ikleyn(52781)

Question 1178976: Solve the linear programming below.
Maximize
P = 8x + 8y
Subject to 2x + y ≤ 30
x + 2y ≤ 24
x, y ≥ 0
What is the maximum value of P?

Please explain to me my second homework question step-by-step
Click here to see answer by Theo(13342)

Question 1179311: A school club has 60 members enrolled to go for a trip in bus.If 12 less members had enrolled for the trip,each member would pay sh.50 more towards the cost of transportation.If actually 50 members go, how much does each pay?
Click here to see answer by josgarithmetic(39617)

Question 1179313: The sum of digits in a three digit number is nine. The tens digit is half the sum of the other two and the hundreds digit is half the units digit.Find the number.
Click here to see answer by josgarithmetic(39617)

Question 1179363: A company manufactures two different products A and B each unit of product A cost 6 dollar to produce and each unit of product B costs r dollar .the company insists that total costs for the two products be 500 dollar

Click here to see answer by greenestamps(13200)

Question 1179389: A e month old child weights 14.9 pounds and it is expected the child will gain 2.4 pound each month what equation would model the child weight?
Click here to see answer by amarjeeth123(569)

Question 1179392: The price of a computer component is decreasing at a rate of 10 % per year. State whether this decrease is linear or exponential. If the component costs $ today, what will it cost in three years?
Click here to see answer by ikleyn(52781)

Question 1179428: Find the equation of the line that contains the given point and given slope
P(-3, 5), and m = 5
Click here to see answer by mananth(16946)

Question 1179428: Find the equation of the line that contains the given point and given slope
P(-3, 5), and m = 5
Click here to see answer by josgarithmetic(39617)

Question 1179511: 1.(a) Write an expression in terms of x and y for the total value of a two digit number having x as tens digits and y as the units digit.

(b) The number in (a) above is such that three times the sum of its digits is less than the value of the number by 8.When the digits are reversed the value of the number is increased by 9.Find the number.
Click here to see answer by mananth(16946)

Question 1179510: A certain two-digit number is equivalent to five times the sum of the digits.It is found to be 9 less than the number formed when the digits are interchanged.Find the number.
Click here to see answer by ikleyn(52781)

Question 1179547: The graph of a linear function F passes through the point (-2,10 ) and has a slope of -2. What is the zero of F? *
Click here to see answer by MathLover1(20849)

Question 1179547: The graph of a linear function F passes through the point (-2,10 ) and has a slope of -2. What is the zero of F? *
Click here to see answer by josgarithmetic(39617)

Question 1179547: The graph of a linear function F passes through the point (-2,10 ) and has a slope of -2. What is the zero of F? *
Click here to see answer by greenestamps(13200)

Question 1179603: The Bilt-Rite Electronics Company makes televisions, CD players, and DVD players. Each month, the company turns out 1750 units (TVs, CDs, and DVDs combined). They make twice the number of CDs as they make TVs. The number of DVDs they make is 100 more than the number of TVs and CDs combined. How many of each unit (TVs, CDs, and DVDs) does Bilt-Rite make each month?
I have set the unknowns as t, c, and d and I know that all together equals 1750, but after that I get very confused. Is it even possible to solve this?

Click here to see answer by ikleyn(52781)

Question 1179614: Is it possible to get infinitely many solutions and an x, y, and z value for the following problem. Solve the system of equations using elimination.
a. -4x+5y-3z=17
b. -3x-2y-4z=-1
c. 5x+5y+4z=12
a*-2= 8x-10y+6z=-34
c*2= 10x+10y+8z=24
equation d: 18x+14z=-10
-4x+5y-3z=17
-5x-5y-4z=-12
equation e: -9x-7z=5
e*2 -18x-14z=10
d 18x+14z=-10
result 0=0 infinitely many
I solved another way and got x=1, x=3, and x=-2

Click here to see answer by Alan3354(69443)

Question 1179639: What is the equation of the line that has a slope of -2 and passes through the point (-1, 2)?
Click here to see answer by mananth(16946)

Question 1179978: what is the slope of the line through (6,9) and (7,1)?
Click here to see answer by josgarithmetic(39617)

Question 1180101: Maximize and Minimize P=5x+15y<=60
Subject to: x+3y<=60
x+y>=10
x-y<=0
x>=0
x>=0
Click here to see answer by greenestamps(13200)

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