09/02/15

Evaluate the limit, if it exisit lim goes to 4 of (x^2 +3x)/(x^2-x-12)
Please help
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09/02/15

Use multiplying by 1 to find an expression equivalent to 2/3 with a denominator of 30y
I need help solving this math problem for my homework I am clueless of how to work these king of problems out thanks 
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09/02/15

Calculate Rate for
A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat.If the rope is pulled in at a rate of 1.1... more
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09/01/15

what's this mean
divide 33 photos into 2 groups so the ratio is 4 to 7
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09/01/15

what is the real and imaginary parts of -1/4?
I need to identify what is the real part and what is the imaginary part of negative 1 over 4 (-1/4)
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09/01/15

B is the midpoint of line AC. AB=xsquared-2x and AC=-5x+40. Draw the diagram
 Having problems figuring out these geometry questions, any help will do, thank you!
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09/01/15

I am in math 171 Pre-calculus algebra. I have no idea how to even start to answer this question. Any help would be much appreciated!! :) Thank you very much!
A car traveling at 75 mph is passed by a second car going in the same direction at a constant speed. After 30 seconds, the two cars are (1/4) mile apart. Find the speed of the second car.
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09/01/15

what order of operation is 5 + 7 ÷ 7 × 4 – 17?
whats the answer plz help what order of operation is 5 + 7 ÷ 7 × 4 – 17?
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09/01/15

Math- Trigonometric Identities
Prove that tan(45+x) is identical to 2tan(45-x)   Please show all your working    Thanks in advance for your help!
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09/01/15

Percentage decrease
Enrollments at a language class have dropped from 420 students in term 1 to 370 students in term 2. What percentage decrease does this represent? Please show full working Thank you :)
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09/01/15

evaluate the limit, if it exists. lim h?0 (9 + h)^3 - 729/h
Please help me 
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09/01/15

Evaluate the limit, if it exists. lim h?0 sqrt 25 + h - 5/h
Please help me
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08/31/15

Need the equation for the following problem
man falls down a well of 50 feet.  He climbs up 5 feet each day and slides back 3 feet each night.  How many days does it take home to get out of the well?  I can figure out the answer doing each... more
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08/31/15

This is a absolute value word problem that I had trouble with. Could anyone tell me how to solve it?
a rainstorm begins as a drizzle, builds up to a heavy rain, and then drops back to a drizzle. The rate r (in inches per hour) at which it rains is given by the function r=-0.5|t-1|+0.5 where t is... more
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08/31/15

A={2,3,4,9}. (1) Let B={9}. Note that B?A. Find a subset C of A such that B?C=A and BnC=Ø. C=
A={2,3,4,9}. (1) Let B={9}. Note that B⊂A. Find a subset C of A such that B∪C=A and B∩C=∅. C=
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08/31/15

how many liters of a 65% acid solution should be added to a 14 liters of a 25% acid solution to make a 37% acid solution?
How many liters of a 65% acid solution should be added to14 liters of a 25 % acid solution should be added to make a 37 % acid solution? 
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08/31/15

complex analysis
If z= x+iy , then the number of solutions of the equation      z2 = z¯ is   a) 1      b) 2        c) 3            d) infinite   where z¯ = x- iy please solve it, i m confused
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08/29/15

Find intercepts of x^2+x+y^2+2y=0
Is it a circle ?
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08/29/15

How do I solve this ?
A pharmacist needs to obtain a 60% alcohol solution. How may ounces of a 30% alcohol solution must be mixed with 50 ounces of an 80% alcohol solution to obtain a 60% alcohol solution?
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08/28/15

This year an item cost $106, an increase of 10% over last years price, what was last years price?
I need help on how to work this problem out.  
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08/28/15

Shirley traveled 6 hours to Lake Sinclair, a total of 315 miles. She took a train part way of the way, which averaged 50 miles per hour and then took the bus th
Shirley traveled 6 hours to Lake Sinclair, a total of 315 miles. She took a train part way of the way, which averaged 50 miles per hour and then took the bus the remaining distance, which averaged... more
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08/28/15

how do you solve 2xto the second power times 2x tothe third power
how do you solve 2x2X2x3  
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08/28/15

Find the crews rowing rate and in still water and the rate of the current.
If a boats crew rowed 9 miles downstream with the current, in 1.5 hours. The return trip upstream, against the current, covered the same distance, but took 3 hours. Find the crews rowing rate and... more
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08/27/15

Remainder and Factor Theorems
Given that kx^3+2x^2+2x+3 and kx^3-2x+9 have a common factor, what are the possible values of k?     Ans: -7 and 5/9
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08/27/15

remainder theorem
Given that x^5+ax^3+bx^2-3=(x^2-1)Q(x)-x-2, where Q(x) is a polynomial. State the degree of Q(x) and find the value of a and b. Find also the remainder when Q(x) is divide by x+2.
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