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Question 174048: Im just starting out with algebra so forgive me. Can you show me how to simplify and get the value of x (without using a graph)
5/(x+2)=3/x

The answer is x=3
Im not sure how to work with fractions when the denominator is the unknown + a number.

Click here to see answer by Earlsdon(4900)

Question 174223: i would much appreciate help in how to solve this linear equation. without using a graph, how do you find the value of x when the denominator of the fraction is the unknown + a numeral.
(6k-3)/(2k+7)=(3k-2)/(k+5)
can you please simplify the answer in a step by step format. Thankyou so much.
Click here to see answer by vleith(1977)

Question 174500: If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
Click here to see answer by Mathtut(3670)

Question 174543: If Steven can mix 20 drinks in 5 minutes, Sue can mix 20 drinks in 10 minutes, and Jack can mix 20 drinks in 15 minutes, how much time will it take all 3 of them working togeter to mix 20 drinks?
Click here to see answer by rapaljer(3625)

Question 174775: 30 milSincePlease help me to solve the problem below. I have tried to solve it using the average speed formula S=D/T, but it did not work. The result I got make no sense (30=0).

A car went around a one mile track at a speed of 30 miles per hour. At what speed must the car travel on its second time around the track if the driver wants to average 60 miles per hour for the two mile trip?
Thank you very much in advance for your help.
Camelia
Click here to see answer by stanbon(26297)

Question 175173: I am in desperate need of understanding Algebra. Would you please help me!?
1). Factor Out the GCF in this expression:
〖15x〗^2 y^2-〖9xy〗^2+〖6x〗^2 y
2). Use grouping to factor each Polynomial completely:
x^3+ax+3a+〖3a〗^2
3). Factor this polinomial. If it is prime, please tell me.
18z + 45 + z^2
the same with the next one:
4). 〖3x〗^3 y^2-〖3x〗^2 y^2+〖3xy〗^2
Thank you so much!

Click here to see answer by stanbon(26297)

Question 175242: 18z+45+z^(2 )
How do I factor this polynomial?
Click here to see answer by jim_thompson5910(13794)

Question 175242: 18z+45+z^(2 )
How do I factor this polynomial?
Click here to see answer by gonzo(654)

Question 175258This question is from textbook algebra 1/2 an incremental development

: 40 miles in 5 hours. then 60 miles in 10 hours. then 40 miles in 20 hours.what was his averge speed for all three legs of the trip?This question is from textbook algebra 1/2 an incremental development

Click here to see answer by Alan3354(6097)

Question 175257: 40 miles in 5 hours. then 40 miles in 10 hours. by how much did his first rate exceed his second rate?
Click here to see answer by Mathtut(3670)

Question 175341: 6-3/4÷3=? & 8÷1-1/3=? please help me I'm having the hardest time trying to figure out these type of problems and fractions are my weakness. i've read many fractions problems but i still dan't get it.
Click here to see answer by nycsub_teacher(90)

Question 175306: a=18ft^2
Click here to see answer by nycsub_teacher(90)

Question 175749: The mean of a 13 item data set is 320. 11 of the items are 300, 320,199,175,325,520,156,225,326,421 and 504. The median is 325. Find the remaining two items in the set if it is known that these two items have the greatest possible difference.
Please explain in easy words and complete detail !!!!!!!!!!!!
Click here to see answer by josmiceli(3013)

Question 175807: The expression for figuring a student's average test score is p/t, where p is the total points earned on all the tests, and t is the number of tests. Find a student's average when 256 points are earned on 4 tests.
Click here to see answer by Mathtut(3670)

Question 175814: A mountian with a base 5,914 feet below sea level rises 19,287 feet. What is the elevation above sea level of its peak? What is the elevation of mountain's Peak?
Click here to see answer by stanbon(26297)

Question 175816: A mountian with a base 5,914 feet below sea level rises 19,287 feet. What is the elevation above sea level of its peak? What is the elevation of mountain's Peak?
Click here to see answer by I♥ALGEBRA!(1)

Question 176007: Hi guys and gals!
How can 1 1 1 = 6 ?
I am completely stumped on the first part of a riddle I'm sure some of you know about. Commonly called "The 6 Riddle", it states that all you do is insert the appropriate math symbol between the numbers to equal six. Ex:
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6 etc. all the way to 9 9 9 = 6
I cannot figure out the first set of numbers, so I am asking anyone to help me out.

Click here to see answer by Mathtut(3670)

Question 176063: 3a+1=a+9
Click here to see answer by Mathtut(3670)

Question 176248: I am trying to figure the rate of change for water temp over a three day period. It is not a constant rate in either direction. Day one is 27(C), day two is 26.5(c), and day three is 26(c). What formula do I use?
Click here to see answer by Earlsdon(4900)

Question 176389: List the conditions when the sum of a positive number and several negative numbers will be positive
Click here to see answer by Mathtut(3670)

Question 176760: Kelly's goal is to average $25,000 per month in sales for the first 3 months of the year. her sales for Jan are $40,000 Feb $20,000. To reach her goald what is the minimum amount of slaes Kelly must make in march?
Click here to see answer by stanbon(26297)

Question 176906This question is from textbook Elementary and intermediate algebra
: For some reason my mind is drawing a blank. The question is:
Candice had scores of 95, 82, 93 and 84 on her first four exams of the semester. What score must she obtain on the fifth exam to have an average of 90 or better for the 5 exams. How do you set this problem up? THanks
This question is from textbook Elementary and intermediate algebra

Click here to see answer by Edwin McCravy(2922)

Question 177237: Simplify 4a-2b+2a-3b. The average age of a mother and are 3 children is 10years. If the ages of the children are 1,4 and 7years. Find the age of their mother.
Click here to see answer by gonzo(654)

Question 177602This question is from textbook beginning & intermediate algebra
: Find the average of -12,28,-36,0,12,-10This question is from textbook beginning & intermediate algebra

Click here to see answer by stanbon(26297)

Question 178518: Maria averaged 212 miles on the first 3 days of her trip. she averaged only 104 miles on the last 6 days of her trip. What was the overall average number of miles driven per day?
Click here to see answer by edjones(3299)

Question 179825: 3. If x = –1 and y = 2, what is the value of the expression 2x3^3 – 3xy ?
Click here to see answer by Mathtut(3670)

Question 180444: The average of five numbers is 18. Four of the five numbers are 21,22,19,8. What is the other number?
Click here to see answer by Mathtut(3670)

Question 180866: What is 1,000 as a power of 10?

~~scientific notation~~
Click here to see answer by user_dude2008(716)

Question 180916: What is the value of the expression 146x10^6?
Click here to see answer by carter6949(26)

Question 180921: Scientific notation:
Simplify
b^3p^4/(bp)^2
Click here to see answer by edjones(3299)

Question 181037: x 5/3 y 1/3 z 2/3 divided by 3/5
i found the common denominator, 15, did x 25/15- 9/15 y -4/15 z 1/15 which would be x 16/15 z 1/15 divided by 1/y4/15
just wanted to see if it is correct
Click here to see answer by Mathtut(3670)

Question 181128: x to the second - 10x+25 = 0 (by factoring)
Click here to see answer by solver91311(5072)

Question 181135: 3x to the 2/5 - 5 = 22
Click here to see answer by stanbon(26297)

Question 181252: 2.2 times 10 exponent -3 / 8.8 times 10 exp. -7
they are scientific notations...
i got 0.0022/0.00000088 = 2500
2500 = 2.5 times 10 exp. 3
is that correct?
Click here to see answer by carter6949(26)

Question 181416: y=xsquared+4x+3
y=negativexsquared-4x-3
y=xsquared+8x+12
Change from a trinomial to 2 binomials
i am very confused on how to do this.
Click here to see answer by stanbon(26297)

Question 181412: y=xsquared+8x+12
Find the vertex, y intercept, and x intercept, and axis of symmetry and symmetric point in standard vertex form.

Click here to see answer by Mathtut(3670)

Question 181556: if A-B is extended its own length at what point would it extend. A (-4,4) to B (2,8). what is the formula. the professor said something about taking the averages of the x y values.
Click here to see answer by Mathtut(3670)

Question 181905: Factor...
3x2 – 11x + 10

8x3 + 1
with those two i just cannot get the right answer... :-(
Click here to see answer by nerdybill(2448)

Question 181903: simplify
(-2^-5 b^0)^3 (a^4 b^2)^5
i don't remember exactly how to solve this...especially with the zero... does it count as 1?
Click here to see answer by ankor@dixie-net.com(6693)

Question 181904: (2a^6 b^3)(3^2 a^-2 b^5)/36a^4
how do you handle the two sections of the brackets? how do you calculate them?
Click here to see answer by ankor@dixie-net.com(6693)

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