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

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Question 637484: evaluate :
(-4+6) -3 (-2)

Click here to see answer by rfer(16322) About Me 
Question 637484: evaluate :
(-4+6) -3 (-2)

Click here to see answer by math-vortex(648) About Me 

Question 637797: Carpenters make $12.50 per hour & helpers make $9.25 per hour. Joe employees 4 carpenters & 6 helpers. He pays himself $22.00 per hour. What is the total payroll for one week if everyone works 40 hours?
Click here to see answer by solver91311(24713) About Me 

Question 637878: (1/4 + 1/8) / (1/2 + 1/5)
does this equal:
15/28

Click here to see answer by DrBeeee(684) About Me 

Question 638008: Perform the indicated operations and reduce the answers to lowest terms:
10/(x+2) + 4/(x-2)
10x - 20 + 4x + 8 = 14x - 12
Select one:
(x2 - 4) / (12x - 12)
(14x - 12) / (x2 - 4)
12(x+1) / (x2 - 4)
12(x-1) / (x2 + 4)

Click here to see answer by solver91311(24713) About Me 

Question 637879: If F(a) = (6 - 8a) / (6a + 9)
Then F(3) is:
Select one:
-2/3
2/3
-3/2
3/2

Click here to see answer by josh_jordan(263) About Me 

Question 638298: Evaluate 4t when t=15 and when t= -6.8. Show steps
Click here to see answer by MathLover1(20850) About Me 

Question 638709: log 10 0.00001
Click here to see answer by Alan3354(69443) About Me 

Question 638833: Multiply the expresstions, and simplify
(x^-2*y^3)*(2x^4*y^-2)
a) 2x^2y
b) 2x^-6y-5
c) 2(xy)^3
d) x^2y

Click here to see answer by MathLover1(20850) About Me 

Question 638887: 3(-2-3x)=-9x-4
Click here to see answer by jim_thompson5910(35256) About Me 

Question 639789: how do you evaluate the expressions when x=-9 and y=-15
x+y

Click here to see answer by josh_jordan(263) About Me 

Question 639814: how do you solve this problem:6+2(4-1)+4*9

Click here to see answer by lenny460(1073) About Me 

Question 639922: 4+ [6/ (5-2) +3-1] x 4
Click here to see answer by josh_jordan(263) About Me 

Question 639953: How to solve the following:
3x-y =7 when y=2x-4
Thank you

Click here to see answer by jim_thompson5910(35256) About Me 
Question 639953: How to solve the following:
3x-y =7 when y=2x-4
Thank you

Click here to see answer by MathTherapy(10555) About Me 

Question 640003: Could you help me with the problem
-6(3x-1)=10
Thank you for your time and help!

Click here to see answer by jim_thompson5910(35256) About Me 

Question 640010: Could you help me with the problem
4x-1-x=5-9x
Thank you for your time and help!

Click here to see answer by jim_thompson5910(35256) About Me 

Question 640009: Could you help me with the problem
-3(x-3)+7x=12
Thank you for your time and help!

Click here to see answer by MathLover1(20850) About Me 

Question 640012: Could you help me with the problem
3/4x+7=1/4x+1
Thank you for your time and help!

Click here to see answer by unlockmath(1688) About Me 

Question 640006: Could you help me with the problem
1/3(6x-12)=14
Thank You for your time and help!

Click here to see answer by Alan3354(69443) About Me 

Question 640249: -4(6y-5)=23-3(8y+1)
Whenever I tried to solve this, the answer ended up being 0y=0. What am I doing wrong?!

Click here to see answer by solver91311(24713) About Me 

Question 640375: i need help i dont know how to do this
Click here to see answer by Alan3354(69443) About Me 

Question 640420: How do you simplify this expression?
-12\3•(-8+(-4)2nd power)+2

Click here to see answer by unlockmath(1688) About Me 

Question 640474: evaluate 9x-6y if x=9 and y=-2

Click here to see answer by jim_thompson5910(35256) About Me 

Question 640509: 3 more than twice a number
Click here to see answer by jim_thompson5910(35256) About Me 

Question 640510: (4(5)) to the power of 3
Click here to see answer by jim_thompson5910(35256) About Me 

Question 640540: how can i solve y-6= neg.14
Click here to see answer by jim_thompson5910(35256) About Me 

Question 640554: Help me solve
1) 3x-y=7,for y

2) 5y-10+y=7y+18-5y

Click here to see answer by jim_thompson5910(35256) About Me 

Question 640684: 11+4(x-2)-17x
Click here to see answer by jim_thompson5910(35256) About Me 

Question 640706: I have 2 questions. 1. The amount of money Milan has if she has some quarters?
2. How fast Ryan runs if he runs 5 mph slower than ann?

Click here to see answer by richwmiller(17219) About Me 

Question 640765: Need help solving
1) is x=3 a solution for 4x+1=-11?

2) solve using the addition principle p+2=-5

Click here to see answer by MathLover1(20850) About Me 

Question 640988: help solve don't understand
-4x+5<5x+9

Click here to see answer by jim_thompson5910(35256) About Me 

Question 641521: Simplify the following expression:
+%283-sqrt%282%29%29%2F%282sqrt%283%29%2B5%29+
Thanks!

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 641966: How can i rewrite the expression 8+30/2+4 and get the value of 13??
Click here to see answer by jim_thompson5910(35256) About Me 

Question 642106: Where do I put parantheses so that this equation equals 16?
3 squared + 6 - 1 * 5 = 16
I've tried every possible way and i keep coming up with the answers 10 or 34, anything but 16. Please help

Click here to see answer by solver91311(24713) About Me 

Question 642347: evaluate lim h tendin to 0 root of x+h - root x/ h , x is not equal to 0
sir / maam humble requestsolve my problem pls

Click here to see answer by solver91311(24713) About Me 

Question 642612: T - 7 for t = 20
Is the answer 13?
2 xsquared for x = 3
Is the answer 18?
The word for is throwing me off

Click here to see answer by jim_thompson5910(35256) About Me 

Question 642616: what is 9 - 2b for b = 3?
Click here to see answer by jim_thompson5910(35256) About Me 

Question 642740: 7{[5(a-5)+19]-[2(4a-3)+4]}
Click here to see answer by jim_thompson5910(35256) About Me 

Question 642826: simplify 8[15-(10-6)divided by 3 to power2=
Click here to see answer by MathLover1(20850) About Me 

Question 643107: height = t squared
You hit a ball during your baseball game and it travels at (3 + 50t - 16t squared) What is the height of the baseball 2 seconds after you hit it?
I think it is either 3 + 50t - 16*2t squared) OR either you multiply the entire expression by 2 outside the parentheses but I am not sure

Click here to see answer by Alan3354(69443) About Me 

Question 643359: -t+5=t-19

Click here to see answer by jim_thompson5910(35256) About Me 

Question 643902: how do i simplify (2a)5x4
i have no idea where to start and i would like to know how to solve it.
Can you help me.
thanks

Click here to see answer by MathLover1(20850) About Me 

Question 644141: n+3 for n=4
Click here to see answer by MathLover1(20850) About Me 

Question 644180: 4x-(x-7)+3(2x+3)
Click here to see answer by lynnlo(4176) About Me 

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