12/13/16

how many moles of O2 will react with 0.950moles of C3H6? 2C3H6+9O2=>6CO2+6H2O
this is stoichiometry and chemistry and is difficult. please show me how to find the answer
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12/12/16

find the standard deviation
SS = 120 and score or (n) is 30. how do I compute the standard deviation with no individual scores. Variance is 4.14
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12/08/16

College Algebra Word Problem
A $2500 investment is made at a 5% annual interest rate compounded continuously. Use the compound interest formula for continuous compounded interest to determine how long it would take for the... more
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11/30/16

College Algebra
Find the [H3O+] for each substance with the given pH   drinking water 6.5
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11/29/16

Six people can pack 1500 boxes in 4 days. At the same rate, how many boxes can eight people pack in 6 days?
it's an average problem 
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11/29/16

Find the amount of the following investment: P=28,000, 10% per year compounded quarterly for 8 years
Find the amount of the following investment: P=28,000, 10% per year compounded quarterly for 8 years
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11/10/16

Taylor invests $6000 at 5% simple interest for 4 years. How much is in the account at the end of the 4-year period?
please help?
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11/08/16

Molar mass related doubts
Compare and explain the molar masses of deuterium and helium.
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10/30/16

need help on this. its for college algebra im stuck please help
 If f(x) = x2 -1 and g(x) = 2x + 5, what is (f+g)(x(=)      
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10/29/16

COLLEGE ALGEBRA
30?% of what number is 87??
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10/26/16

Write the slope-intercept form of the equation form of the equation of the line described. – Show Work
Through: (4, 2), perp. to y = -4/3x – 4
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10/26/16

Write the slope-intercept form of the equation form of the equation of the line described. – Show Work
Through: (-3, -1), perp. To y = -8x + 4
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10/26/16

Write the slope-intercept form of the equation form of the equation of the line described. – Show Work
Through: (0, 5), parallel to y = 2x + 1
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10/26/16

Write the slope-intercept form of the equation form of the equation of the line described. – Show Work
Through: (-4, -4), parallel to y = 7/4x + 1
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10/26/16

Write the slope-intercept form of the equation of the line through the given points. HINT: You need to find the SLOPE and Y INTERCEPT. Show Work Please
Through: (5, -5) and (-5, -4)
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10/26/16

Write the slope-intercept form of the equation of the line through the given point with the given slope - Show Work and Explain
Through: (3, 1), slope = -4/7
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10/26/16

Write the slope-intercept form of the equation of the line through the given point with the given slope - Show Work and Explain
Through: (1,-3), slope = -7
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10/26/16

Find the slope of a line perpendicular to the given line
y = 2x - 1
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10/26/16

Find the slope of a line perpendicular to given line - Show Work Please
y = -5/2x
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10/26/16

Find the slope of a line parallel to the given line
3x + y - 1 = 0 
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10/26/16

Find the slope of a line parallel to the line
0 = 4y - 16 - 3x
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10/24/16

What annual interest rate is needed for a principal of $3000 to grow to $5500 in 3 years if the interest is computed as simple interest?
I DONT KNOW HOW TO SET THIS PROBLEM UP, I KEEP GETTING THE WRONG ANSWER AND CANT FIGURE OUT THE RIGHT ONE. 
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10/24/16

Randy reads 4 books each month as part of his book club. After belonging to the book club for 12 months, how many books will Randy have read in all?
I really need help with this i don't understand it at all i never understood how to do word problems it's always been hard for me 
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10/24/16

A text message plan costs ?$1 per month plus ?$0.36 per text. Find the monthly cost for x text messages.
$1 per month $0.36 per text
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10/21/16

This question is pertaining to college algebra
John ran the 100-m dash with a time of 9.81 sec. If this pace could be maintained for an entire 26-mi marathon, what would his time be? (Notice that 1 m ~ 3.281 ft and 1 mi = 5280 ft
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