10/19/14

Find the vector w=2u-3v and its additive inverse.
Let u=(1,-1,0) and v=(1,-2,-3). Find the vector w=2u-3v and its additive inverse. w= -w=  
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10/19/14

Differentiation of exponential functions
f(x) = (7 − e^−4x)4
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10/17/14

1. The ratio of boys to girls on sport teams at a school is 3 to 1. There are 300 students on sport teams. How many girls are on sport teams at this school?
ratio question with multi steps
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10/05/14

Helicase Ligase Polymerase Replication Transcription Translation Recombinant
Could someone match these to:   a. glues DNA strands together b. copy of a gene c. unzips DNA strands d. rough ER e. synthesized human insulin f. reads code and matches base pairs g. copy... more
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10/05/14

Select the product of (-2x9y)(x7y6).
Select the product of (-2x9y)(x7y6). A. 2x16y7 B. -2x16y7 C. -2x63y2 D. 2x63y6     Which is it?
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10/04/14

Select the product of (6x + 7)(x2 - 2x + 2).
Select the product of (6x + 7)(x2 - 2x + 2). 6x3 - 5x2 - 2x + 14 13x2 - 26x + 26 6x3 - 19x2 - 26x + 14 x2 + 4x + 9
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10/04/14

How to solve this using substitution method but first simplyfi each equation by combining like terms
-6+7y=4x+2(x-5)-4x+5 3(x+y)-x+y=-10
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10/04/14

differentiating using quotient rule
1.   y=(x-3)2/(x+2)2      2.     x/√(1-x2)
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10/04/14

differentiate using chain rule
(x2+3x)7       and    √(1/x-x2)        
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10/03/14

C6H5COOH+O2 = CO2+H2O
Balance the chemical formula
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10/02/14

is LiCl is ionic or covalent
Difference between li and cl  of electronegativity is more than 1.8 so it should be ionic...is it ionic???
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10/01/14

Heat of solution problem can't get the right answer
When 2.50 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 10.50oC was obtained for ΔT.Calculate the value (calories) for the heat of solution of 2.50 g of NaOH
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10/01/14

2M/(M/20+M/25)
If Teddy rides his bike to school at 20 mph and rides home the same way at 25 mph, what is his average speed in miles per hour? 
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10/01/14

-12=m(-8)+b
The question asks - Write the equation in slope-intercept form for the line that satisfies the given conditions. Contains (12,17) and (0,9)
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10/01/14

y+1=-1/8(x+11)
Find the equation of line BR in slope intercept form
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10/01/14

On Saturday, Lindsay walked 3 1/2 miles in 1 2/5 hours. What was her walking pace in miles per hour. Write in simplest form.
I really need held on this word problem
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09/30/14

Partial derivative
find the ∂f/∂x and ∂f/∂y of: 1.f(x,y)=tan-1(y/x) 2.f(x,y)=e-xsin(x+y) 3. f(x,y)=x/(x^2+y^2)  
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09/30/14

the perimeter of a standard-sized rectangular rug is 24ft the length is 2ft longer than the width. find the dimensions
what is the width ? what is the length?  
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09/30/14

the length of a rectangle is 3 feet less than twice its width, and its perimeter is between 24 and 48 feet
the length of a rectangle is 3 feet less than twice its width, and its perimeter is between 24 and 48 feet. The answer must be expressed as an inequality. Please help!!
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09/29/14

how to work this problem by factoring then solving
x2+6x+8=0
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09/29/14

What is three consecutive numbers whose square add to 245
Find the three consecutive numbers whose square add to 245
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09/29/14

Aaron has three more quarters than dimes. The total value of the dimes and the quarters together is $13.00. How many quarters does Aaron have?
this is a word problem and I don't know how to go around solving it. please help. I have a test tomorrow.
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09/29/14

What is the answer?
Player A led a baseball league in runs batted in for the 2006 regular season. Player B, who came in second to player A, had 16 fever runs batted in for the 2006 regular season. Together, these 2... more
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09/29/14

Amanda has bought a second-hand car for $4,000.
She plans to keep it for four years, at the end of which it is likely to fetch $500, If the maintenance cost is $350 per year, and i = 8% per year, what is the car's net annual cost?
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09/29/14

Time and Distance Word Problem
Wilma drove at an average speed of 50 mi/h from her home in City A to visit her sister in City B. She stayed in City B 15 hours, and on the trip back averaged 60 mi/h. She returned home 46 hours... more
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