07/11/22

Chemistry 102: Acids: concentration
What is the concentration of hydroxide ions for an aqueous solution of acetic acid for which [H3O+] = 2.50 × 10–4 M ?
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06/25/19

A jar contains half dollars and quarters . There are 30 coins in all in the jar The total value of the coins is $8.75 how many quarters are in the jar
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06/19/19

marcs tires measure 26 inches in diameter.one tire completed 388 full rotations between the time he left his house and the time he arrived at work.how far did Marc bike between his house and work?
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01/16/18

dose 18 go into 45
dose 1.8 go in to 45 long division 
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01/15/18

h.c.f and l.c.m word problem book answer is 10:02:56 but how
athere are two light houses near a port. the light in the first lighthouse flashes every 22 seconds. the light in the second lighthouse flashes every 16 seconds.at 10 p.m one evening both lights... more
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12/10/17

A pole that is 2.7m tall casts a shadow that is 1.26m long. At the same time, a nearby tower casts a shadow that is 36.25m long. How tall is the tower?
 i do not understand this problem can u please give me the steps on how to get the awnser to the problem
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12/06/17

sam has $21.40 in dimes and quarters, for a total of 100 coins. How many of each kind of coin does he have?
i need to find out how to solve
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12/05/17

Log base 7 of (3x^4), we want to find the derivative
Please help me with log derivatives
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12/05/17

The length of a rectangular soccer field is 20 yards less than twice its width.
The perimeter of the field is 320 yards. find the length and the width
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02/19/17

Assuming all matrices are nxn and invertible Solve for D ( inverses; algebraic properties of matrices) Is my answer right ?
CT B-1 A2 BAC-1 DA-2 BT C-2 = CT   My answer is : D= BA-2 B-1 A-1 CA2 (BT)-1 C2
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02/19/17

A total of 480 tickets were sold for the school play. They were either adult tickets or student tickets. There were 70 fewer student tickets sold than adult
I need to find the total amount of tickets
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01/24/16

square root of 77/10 in estimated fraction form
 I don't know how to take the answer of 2.77 and find the fraction of 14/5
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01/24/16

it takes 3.2 hours to canoe 12 miles downstream and 4.8 hours to paddle upstream, what is average paddling speed in still water and the current of the river
This is a system of equations and it is really hard for me.
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01/19/16

How tall is the tree?
The Sun is 25 degrees above the horizon. It makes a 63-m-long shadow of a tall tree. How tall is the tree?
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01/19/16

Chemistry lab question? Making a solution??? Please help!!
Starting with solid sodium chloride, how would you make one liter of 2.000 ppm (parts per million) sodium chloride solution?   tip: 1 ppm = 1 g solute/10^6 g solution , for dilute aq solutions 1... more
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01/19/16

Maths worded problem on Lower bounds
Sophie estimated that the distance between Bristol and Newcastle is about 290 miles and that her average driving speed would be 60 mph.She estimated the distance to the nearest 10 miles and the... more
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01/19/16

Give the numerical coefficient of the term
2m2   The numerical coefficient is
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01/19/16

how to find y?
if x=1183 and is 22% higher than y, what is y? how did you find it?
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01/19/16

what must be added to the sum of 2 and 9 1/2 to make it 20
The answer to the above question is 8 1/2  but i want to knw how to solve it.
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01/18/16

A force of 3.5N is exerted on a 7.0 g bullet. What is the bullets acceleration ion m/s
I need the answer to this question in m/s 2.....haveing problems can someone help answer this question
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01/08/16

if 8 cases of merchandise cost 60 dollars what would a dozen cost
Need help on how to write ansewer down
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01/07/16

(1) Find the value of h. (2) If P( Y (with modulus symbol) < m)=0.5, find m.
A continuous random variable Y has probability density function,   g(Y)=(big open bracket) hy², -2<Y≤2                                     0 ,  otherwise.
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01/07/16

will cycles at a speed of 15 miles per hour
Will cycles 15 miles per hour he cycles 12 miles from home to school. .if he increases his cycling speed by 5 miles per hour how much faster would he reach school 
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