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Question 395955: Simplify this problem.
63x^2+54x^2-105x-90
Click here to see answer by mananth(16946)

Question 396392: Use substitution to solve each system of equations. If the system does NOT have exactly one solution, state whether it has NO solutions, or INFINITELY MANY solutions.
1.) y=7-x
2x-y=8
Click here to see answer by stanbon(75887)

Question 396459: 3.04 x 10-3
Click here to see answer by Alan3354(69443)

Question 396592: The sum of 3 integers is 123. The second number is two more than twice the first number. The third number is five less than the product of three and the first number. Find the three numbers
Click here to see answer by mananth(16946)

Question 396564: A student was thinking of three consecutive numbers. He said that the sum of the first and the second was the same as the third number increased by 9.
I have so far.
2(x+x+1) = (x+2)+ 9
2x+2x+2=x+11
4x+2=x+11
3x+2=11
3x=9
X=3
Click here to see answer by richard1234(7193)

Question 396664: a2-21a-20
Click here to see answer by Alan3354(69443)

Question 396668: 5a+4a+3a=?
Click here to see answer by stanbon(75887)

Question 396772: Write and equation of the line that passes through the given point and is parallel to the given line.
Click here to see answer by solver91311(24713)

Question 396952: In a certain city a birth occurs on the average every 24 minutes and a death every half hour. A resident moves out of the city every 1.5 hours and a new person moves into the city every 4.5 hours. How long does it take on the average for the population to increase by 1 person? Please help me!
Click here to see answer by stanbon(75887)

Question 397049: I need to understand and explain slope so please help me.
Click here to see answer by richard1234(7193)

Question 397025: Is 3.14 a rational number?
Click here to see answer by richard1234(7193)

Question 349205: � The local beach resort is offering two weekend specials. One special includes a 2-night stay with 3 meals which costs $195. The other special includes a 3-night stay with 5 meals and costs $300. What is the cost of a 1-night stay? What is the cost per meal?

Click here to see answer by shelbylynne(1)

Question 397096: How do u work this problem out? Its system of equations
3x+4y=12
Y=-2x+10

Click here to see answer by Sarpi(32)

Question 397186: You and a friend are 4.5kilometers away from each other. Walking toward each other, the two of you meet in a half hour. Your walking speed is twice as fast as your friends. What is your friends walking speed?
Click here to see answer by lwsshak3(11628)

Question 397331: simplify the expression. 16 + (x + 4)
(a) x + 12
(b) x + 20
(c) x + 4
(d) 4x + 16
simplify the expression. (8 * b) * 4
(a) b + 32
(b) 12b
(c) 32b
(d) 8b + 4
translate the verbal sentence into an equation and solve. the sum of a number and 16 is 31.
(a) 16 + 31 = x,x = 47
(b) x + 16 = 31,x = 15
(c) x + 16 = 31,x = 47
(d) 16 + 31 = x,x = 15
translate the verbal sentence into an equation and solve. the difference of 22 and a number is 8.
(a) y - 22 = 8,y = 30
(b) 22 - y = 8,y = 30
(c) y - 22 = 8,y = 14
(d) 22 - y = 8,y = 14
Click here to see answer by ewatrrr(24785)

Question 397351: How do u. Solve systems of equations
Click here to see answer by Alan3354(69443)

Question 397527: How do you solve this?
Simplify radical equations:
squareroot of:99
Click here to see answer by Alan3354(69443)

Question 397578: What is the slope intercept form of this equation 5x+y=6
Click here to see answer by Alan3354(69443)

Question 397578: What is the slope intercept form of this equation 5x+y=6
Click here to see answer by richard1234(7193)

Question 397583: How do you convert 1 1/2 into percentage ?
Click here to see answer by Alan3354(69443)

Question 397615: A clock has a diameter of 4 inches. About how far does the end of the long hand travel during one hour?
Click here to see answer by robertb(5830)

Question 397658: Find the value of the discriminant.give the number of real solutions. Give all the real solutions to the nearest hundreds.

Click here to see answer by Alan3354(69443)

Question 397670: Is the argument valid or invalid. Some tv shows are comedies.
All comedies are hits/therefore some tv shows are hits.
Click here to see answer by 90887896(4)

Question 397646: 6 years ago bob was 4 times as old as Mary. In 4 years he will be twice as old as Mary. How old are they?
Click here to see answer by 90887896(4)

Question 397646: 6 years ago bob was 4 times as old as Mary. In 4 years he will be twice as old as Mary. How old are they?
Click here to see answer by richard1234(7193)

Question 397675: What is value of discriminant?
Click here to see answer by stanbon(75887)

Question 397742: How do you add and subtract rational expressions?

Click here to see answer by darleneporter(1)

Question 397755: One cleaning fluid contains 8% ammonia, while a second contains 18% ammonia. In mixing these fluids, how many liters of the second needs to be added to 15 liters of the first, for the percent of the ammonia in the mixture to be 14%?
Click here to see answer by lwsshak3(11628)

Question 397754: A library crew can shelve books in eight hours. another crew can do the job in six hours. If the first crew member begins and is joined by the second crew one hour later, how many hours will it take for the job to be completed?
Click here to see answer by lwsshak3(11628)

Question 397752: a.) Simplify the following expressions.
(-1)^1 , (-1)^2 , (-1)^3 , (-1)^4 , (-1)^5
b.) What is the sign of the final answer when the exponent is odd? When the exponent is even?
c.) Use your answer from part (b) to simplify (-1)^19
Click here to see answer by robertb(5830)

Question 397801: What is lcd
Click here to see answer by richard1234(7193)

Question 397757: Bob has $23,000 invested, part at 4% and part at 5.5%. How much is invested at each rate, If his total annual return(invest) is $1,040.

Click here to see answer by ewatrrr(24785)

Question 397756: Bob has %23,000 invested, part at 4% and part at 5.5%. How much is invested at each rate, If his total annual return(invest) is %1,040.
Click here to see answer by ewatrrr(24785)

Question 397803: What is the most important part of elementary algebra
Click here to see answer by ankor@dixie-net.com(22740)

Question 397747: Veronica wants to purchase a radio that costs $250. She saves $10 the first month and increases that amount by $5 each month. How long will it take her to save $150?
Click here to see answer by ewatrrr(24785)

Question 397939: My other algebra 2 question is find the value of x. Area of the rectangle=40ft2. xft and (x+3). How do u solve it?
Click here to see answer by josmiceli(19441)

Question 397579: 4x^3-12x^2+8x
Click here to see answer by scott8148(6628)

Question 397937: This is my algebra 2 question. It says to find the value of x. Area of rectangle=36cm2. Xcm and (x+5) how do u get the answer 4.
Click here to see answer by ankor@dixie-net.com(22740)

Question 397959: How do solve this fraction in simplest form 2/7-3/4
Click here to see answer by EricL(29)

Question 397959: How do solve this fraction in simplest form 2/7-3/4
Click here to see answer by Tatiana_Stebko(1539)

Question 397994: S.J has 2 jobs offers at as a car salesperson. With the 1st one she will receive $600 per mth plus a 2% commission of the total sale of the automobiles she sells. At the other dealership, she will receive $1000 per mth plus a commission of 1.5% of her total sales.
34.which is the total sale of the automobiles that Ms. J must sell each mth to make the same income from either dealership?
35. Explain which job is better.
Click here to see answer by stanbon(75887)

Question 397478: Simplify 37 to the 0th power
Click here to see answer by richard1234(7193)

Question 398267: Just checking to see if I've done these right~
1. Find the LCD for 3/w and 4/w^2
Answer: 7/w^2
and
2. e^2-e-12/e-4
Answer: e+3
Click here to see answer by Alan3354(69443)

Question 398313: 50 million is 12.5% increase of what number?

Click here to see answer by krzle(1)

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