Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 663130: i am a three digit number. I am less than 500 but greater than 200. All my digits are odd. IF YOU ADD MY DIGITS, THEy are equals 5
Click here to see answer by checkley79(3341)

Question 663134: George, Susan, Henry and Sarah are 7, 8, 9, 10 years old. Henry is older than Sarah and younger than George. Susan is younger than Henry and older than Sarah. What is each person's age?
Click here to see answer by lynnlo(4176)

Question 663536: I have two equations, need to insert grouping symbols to make each statement true;
8 - 3 * 5 - 8 = 1
35 + 16 - 6 - 3 = 48
Click here to see answer by ReadingBoosters(3246)

Question 663730: I am looking for help, I don't really understand how to solve these equation.
1) 10n+5n-6=9
2) 25=19+20n-18n
3) 3/1/2r+r+2=20
4) 5r=2r+27
5) 100+3/1/2t=23/1/2t
6) 9u=16u-105
7) 5x+3-2x=x+8

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Question 663825: simplify. 4w+8z+-5z+6w
Click here to see answer by Alan3354(69443)

Question 663831: simplify. 4w+8z+-5z+6w=
Click here to see answer by nyc_function(2741)

Question 664132: Problem I need to see if I am doing correctly
(3^2 *3)^2
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Question 664192: Evaluate (3xy^2)/(6z) for x = -3, y = 2 and z = 1.
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Question 664196: Find the value of the polynomial -x^2 + 4x + 10 when x = -4.
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Question 664197: Evaluate 6^-3.
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Question 664194: Multiply (-6y^5)(9x^2y^3)
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Question 664194: Multiply (-6y^5)(9x^2y^3)
Click here to see answer by MathTherapy(10555)

Question 664060: the product of 2 numbers is 54 and one of the numbers is x. the other number would best be representd as?
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Question 664195: A real estate agent received a 4% commission on the sale of a home. If the home sold for $540,000, how much was his commission?
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Question 665291: Sarah travels an average speed of 40 miles per hour. Write an equation to find the distance for any number of hours.
Click here to see answer by Sacrifice(3)

Question 665291: Sarah travels an average speed of 40 miles per hour. Write an equation to find the distance for any number of hours.
Click here to see answer by Alan3354(69443)

Question 665791: It costs 500 dollars to have a booth at the fair for one day and 2.75 dollars for Aunt Ida to produce one of her famous shepherd's pies. What is the function that gives the average cost in dollars per pie for one of Aunt Ida's days at the fair?
Click here to see answer by fcabanski(1391)

Question 665886: solve (x-2)^2-2=-x+3
Click here to see answer by Jacky C(3)

Question 665893: write the equation in slope-intercept form
y+4=3(x+4)
Click here to see answer by Alan3354(69443)

Question 665893: write the equation in slope-intercept form
y+4=3(x+4)
Click here to see answer by Jacky C(3)

Question 666123: 1/3a+2=2/3a

Click here to see answer by ewatrrr(24785)

Question 666173: 2(9n-1)+7(n+6)=-60
(include te steps to find the answer; I can't seem to get it right)
Click here to see answer by Shana-D77(132)

Question 666188: Angle A is three times the size of angle B (angle B is x+2). The sum of the angle measures 128 degrees. Find the value of x.
Click here to see answer by ReadingBoosters(3246)

Question 666524: evaluate f(a+1) if f(x)=x^2+2x+5
Click here to see answer by Leaf W.(135)

Question 666575: (4n/2n^2)^3
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Question 666602: what is x+3

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Question 666716: PLEASE HELP!
A={1,2,3,4,5,6,7,8,9}
B={2,4,6,8,10}
find A∩B
A={1,2,3,4,5,6,7,8,9}
B={2,4,6,8,10)
Find A U B
Click here to see answer by MathLover1(20850)

Question 666854: Please help me solve "4(x+1)for x=6 and x=11". I understand if there are two variables (expl 4x+1y for x=2 and y=2), but I am not sure what to do where I have the variable x that equals two different numbers....
Click here to see answer by solver91311(24713)

Question 667099: i need help to solve and understand y+3 over 4= 7... how do you solve that??
Click here to see answer by ReadingBoosters(3246)

Question 667237: 3* 5/6 (three times the fraction of 5/6) please show steps
Click here to see answer by Alan3354(69443)

Question 667237: 3* 5/6 (three times the fraction of 5/6) please show steps
Click here to see answer by Adrianne15(25)

Question 667597: can you please help me simplify (2t+4)3+6(-5)-(-8) i sort of know how to do it but i get confused at it
Click here to see answer by Adrianne15(25)

Question 667599: -2x+7+9x-4
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Question 666913:
Solve the expression.
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Question 667718: How can I make this expression equal to 8 by inputting parenthesis:
17 + 2 * 3^2 + 5 � 5
Click here to see answer by ReadingBoosters(3246)

Question 668209: how do you simplify the expression with only positive exponents and with the answer in simplest form:
(2a)^-1 / 2(a)^-2
Click here to see answer by MathLover1(20850)

Question 668209: how do you simplify the expression with only positive exponents and with the answer in simplest form:
(2a)^-1 / 2(a)^-2
Click here to see answer by ReadingBoosters(3246)

Question 668334: WHAT IS THE VAKUE OF EXPRESION X +3
Click here to see answer by radh(108)

Question 668802: evaluate 4x5+9-2x(1+2)
Click here to see answer by swincher4391(1107)

Question 668831: Please help me solve this...The cost of 5 similar digital cameras and 3 similar video cameras is $3,213. Each video camera costs 4 times as much as each digital camera. John buys a digital camera and as video camera. How much does he pay?

Click here to see answer by ReadingBoosters(3246)

Question 668999: Simplify the expression.
(3 + i) - (2 - 2i)
A. 1 + 3i
B. 5 - i
C. 4i
D. -1 - 3i
Click here to see answer by jim_thompson5910(35256)

Question 668999: Simplify the expression.
(3 + i) - (2 - 2i)
A. 1 + 3i
B. 5 - i
C. 4i
D. -1 - 3i
Click here to see answer by MathLover1(20850)

Question 668999: Simplify the expression.
(3 + i) - (2 - 2i)
A. 1 + 3i
B. 5 - i
C. 4i
D. -1 - 3i
Click here to see answer by ewatrrr(24785)

Question 668955: Simplify the expression.
(3 + i) - (2 - 2i)
A. 1 + 3i
B. 5 - i
C. 4i
D. -1 - 3i
Click here to see answer by lynnlo(4176)

Question 669095: I know the answer to the equation, would you show me the correct steps to solve this equation.
2[4+3(x-5)]
=6x-22
Click here to see answer by MathTherapy(10555)

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