Questions on Algebra: Operations with Signed Numbers answered by real tutors!

Tutors Answer Your Questions about Signed-numbers (FREE)

Question 244162: How do you work the problem 2(x+3)^2-4=24
Click here to see answer by checkley77(12569)

Question 247184: I have a question about order of operations...
The problem is
a = 3
18 ÷ 2a
My question is....can the variable be separated from the number, thereby treating it like 18 ÷ 2 * 3, resulting in the answer 27,
or does the variable stay attached to the number 18 ÷ 2(3), resulting in the answer 3
Thanks,
Schel
Click here to see answer by richwmiller(9144)

Question 249834: have problem with using 4's ex. (4/4)+4-4= 1 i got up to 9, I can not figure out 10 using the #4 only 4 times can you help
Click here to see answer by solver91311(17077)

Question 249853: 3a + a = 200, can you please help me solve this problem?
Click here to see answer by rfer(12730)

Question 250309: 90 is 8% of what number
Click here to see answer by richwmiller(9144)

Question 250307: 90 is 8% of what number
Click here to see answer by richwmiller(9144)

Question 250785: If z-5=-9 , find the numerical value of -2z-5 what does it equal and show work please!-2z-5
-2(-5)-5
-10-5= -5
----------
+++++
Click here to see answer by ilybam(1)

Question 250914: HI I Need help here is the problem.
11 over 6p + -7 over 4p

Click here to see answer by unlockmath(1614)

Question 250914: HI I Need help here is the problem.
11 over 6p + -7 over 4p

Click here to see answer by Lina77(1)

Question 252824: -1*5+1-6+15-30*-5/3
Click here to see answer by richwmiller(9144)

Question 253016: 1. Mr. Salgado leased a new car for 3 years. He agreed to pay $1,200 down and $269 per month for the duration of the lease. Mr. Salgado also agreed to pay $0.125 per mile for every mile driven over 36,000 miles. When he got the car, the odometer read 0 miles. At the end of the lease, the odometer read 49,272 miles.
What was the total cost to lease the car for three years, excluding any taxes?
1. $9,684
2. $10,884
3. $11,343
4. $12,543
5. $15,384
Click here to see answer by richwmiller(9144)

Question 253130: WHAT IS THE ORDER OF OPERATION FOR ALGEBRA?

Click here to see answer by richwmiller(9144)

Question 253152: This is not acually for this topic, I need help on adding, subtracting, multiplying and dividing positive and negative numbers. How do I do this?
Example; -23- 73=???
Click here to see answer by richwmiller(9144)

Question 253535: what is the answer to this problem? 25+6-15+25-10+14-21
how do I solve this problem. Please set it up for me thank you.
A $100.00 check that is cashed at a rate of $7.00, at what rate did you cash it? (in percentage)
Click here to see answer by Alan3354(31528)

Question 254587: order of operation for (3/4-2/3)+(1/2+1/3)
order of operation for 1/2+(2/3 div by 3/4)-(4/5*5/6)
Click here to see answer by richwmiller(9144)

Question 254913: A man ran 8 miles and walked 6 miles. if he ran 5 mph faster than he walked, and the total time was 2 hours, how fast did he walk?
Click here to see answer by ankor@dixie-net.com(15746)

Question 255482: i'm having problems in algebra , i'm in adv. , 8th grader taking 9th grade algebra classes. i'm having problems with the slope - intercept method. also graphing.
likee these problems :
y = 3x - 2
y = -2x
and y = -3/4x + 6
may you help me please ?
Click here to see answer by richwmiller(9144)

Question 256127: what is the answer to this problem: w+8w+4(w+8)
Click here to see answer by drk(1908)

Question 256218: c(5,2) = 5! / (5-2)! 2!
Click here to see answer by drk(1908)

Question 256272: From 8am to noon the temperature rose 4F. From noon to 4pm it fell 3F. From 4pm to 8pm it fell another 6F. At 8pm the temperature was 72F what was the temperature at 8am?
I NEED HELP FAST, with steps taken
Click here to see answer by vleith(2825)

Question 256935: Please help me understand why the -6 is not multiplied with the value in the parentheses.
wrong:
(8-2)-6
(6)-6=-36
right:
(8-2)-6
6-6=0
Click here to see answer by Fombitz(13828)

Question 258621: Insert parentheses to make statement true:
30 - 4 x 2 + 5 = 2
Click here to see answer by ankor@dixie-net.com(15746)

Question 258659: I need to preform the following calculations: e^-2.15. Can I get a step by step breakdown. also ln6.213
Click here to see answer by Alan3354(31528)

Question 259559: 1.If you ate a pizza and a half in a day and a half. How many pizzas would you eat in a 7 day week?
2.There are 30 legs in my backyard, but i'm counting dogs and kids. How many kids and dogs are in my backyard?
Click here to see answer by drk(1908)

Question 259739: 1. Amy's grandmother's age is divided by 15 is 5. How old is her grandmother?
2. Your mom bought you a 1 year swimming pass for $390. She's making 12 payments of how much money to pay for the pass?
Click here to see answer by Stitch(352)

Question 259562: 1. Your aunt is flying to your house next month. She's coming from San Francisco to Buffalo. It's a 5 hour flight and she lives 3060 miles away from you. How fast does the plane go?
Click here to see answer by Fombitz(13828)

Question 259553: 1. The caterpillar is trying to crawl up the tree. It takes 2 minutes to climb 1 foot, but it falls back 6 inches each time it reaches 1 foot. How long will it take the caterpillar to crawl to the top of the 8 foot tree?
2. You have 12 mp3 songs on your computer. 1/4 of them don't work. How many mp3's do you have to buy to replace the ones that don't work?
Click here to see answer by ShainaCynthia(1)

Question 227301: Please help...please show me steps to resolve: 3/5y=2/15
Click here to see answer by Nieleya(22)

Question 134687: 2a+3b-a-b=
Click here to see answer by Nieleya(22)

Question 260523: rewrite each expression with paratheses to make the statement true?
9 t 12 divided by 3 = 7?
Click here to see answer by drk(1908)

Question 264166: 8= -64y I don't understand how or why to get y
Click here to see answer by checkley77(12569)

Question 265586: What do 5 is more than a number mean?

Click here to see answer by dabanfield(803)

Question 265589: What do "the product of two numbers is equal to 14" mean?..
What do "2 times a number equals that number plus 5" mean?..
What do "half of a number is 8 less than a second number" mean?
What do " 4 more than 3 times a number is equal to 6 more than 2 times the number" mean?
What do "a number decreased by 5 and then doubled is 4" mean?
Click here to see answer by checkley77(12569)

Question 267246: how do i solve this math problem m -4n=9
Click here to see answer by solver91311(17077)

Question 267244: how do i solve this math problem m -4n=9
Click here to see answer by Alan3354(31528)

Question 267327: you have 12 mp3 songs on your computer. 1/4 of them don't work . how many mp3 do you have to buy to replace the ones that don't work?
Click here to see answer by checkley77(12569)

Question 268153: Here is my problem
4^3-2+6*5/4*9/6^2=100
I have to make three necessary changes to make this equation true. I cannot change numbers but can change operations and add ( )
If you can help even just a little...I have been working on this for 3 days!
THANK YOU
GNS
Click here to see answer by ankor@dixie-net.com(15746)

Question 270094: 6a(2a2-3a-4)-a(a-2)

Click here to see answer by unlockmath(1614)

Question 271289: Please explain simplify this; x-2(xy-y)+4xy-x(3+y)=?

Click here to see answer by stanbon(57967)

Question 258620: Inwert parentheses to make statement true:
30 - 4 x 2 + 5 = 2
Click here to see answer by mawskittykat(9)

Question 237964: When multiplying and dividing positive and negative numbers, how do you determine the sign of the answer?
Click here to see answer by mawskittykat(9)

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