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Mathematics

IF YOU SMOKE 10 CIGARETTES A DAY HOW MANY WILL THAT BE IN A YEAR.?

If tanθ=4/3, what is tan(4θ)?
Where do I start? 
Find the difference of 9 3/8 8 7/8?

1 litre is 50ml?

If I have 170 questions and I get 67 wrong what is my percentage?

What is a equivalent fraction to 5/12?

Why is China’s economy growing faster than American and Russian?

If xy = 12 and x + y = 3, then x2 + y2 =?

Soh cah toa?

One line passes through the points (1,9) and (4,−9). Another line passes through points (6,5) and (8,−5).?
Are the lines parallel, perpendicular, or neither? 
3X/5 – 2 = X + 1/3 Solve the equation above for x.?

What percent is $71.69 out of $387.75?
That’s the tax out of my paycheck, leaving me with $316.06 this month. I feel robbed with these taxes, and I live in Texas! I want to know what PERCENT of my paycheck was taken out for taxes though. 
Am I right in thinking that Genghis Khan was proportionally bloodier than either Hitler or Stalin,?
in that he killed a larger percentage of the worlds population. Hitlers war killed around 50m, which is a lower percentage the worlds of population in the mid20th century than 20m was in the 13th. 
X^2+10x+9?

If the area of the diagonal section of a cube is equal to 402 cm squared,then find the edge of the cube.?

If a=3b+4 and b=7, what is the value of a?

Can I become a millionaire if I save over $10000 every year?
Best answer: Given your savings history just with your current salary, you should be well on the way to being a millionaire. As others have shown, if invested wisely (using a 10% historical average of the stock market) taking advantage of compounding, you could have a million by your early to midforties.
Age Balance
22 $54,471.35
23 $70,389.83
...
42 $966,202.45
43 $1,073,294.04
The problem is you apparently aren't investing for that type of return instead putting it in a savings account; that would need to change.
Hopefully your salary will grow as you progress in your career. Taxes and expenses will increase as well (married? kids? owning/maintaining a home?) but your annual savings should grow too. Take advantage of employer matching contributions to retirement (401k plan).
The next question is whether being a "millionaire" is enough (see second link). With inflation, you may want to aim higher than that. But again, given your savings mentality, I think you are on your way. Keep at it! 
Algebra 2 work/rate problem?
Mr. A can grade 12 tests in 20 minutes. Mr. A and Mr. B can grade 40 tests in 15 minutes. How long will it take Mr. B to grade 16 tests? (Solution/steps please) 
Puzzler math question?
Start with 10,000 quarters, all “heads up” and lined up in a (long) row. Number each quarter starting from the left and working to the right (1st, 2nd, 3rd, etc…). Then carry out the following procedure: Step 1: Turn over every quarter Step 2: Turn over every second quarter (2nd, 4th, 6th, etc…) Step 3: Turn over every third quarter (3rd, 6th, 9th, etc…) ⋮ Step 10,000: Turn over the tenthousandth quarter So in general, in Step n , turn over every quarter that is in a position that is a multiple of n . At the end of Step 10,000, which coins will be heads up and which will be tails up? 
How do you add subtract divide and multiply fractions??
Best answer: simple, numeric fractions (all numerators and denominators are numbers, usually whole numbers) === or algebraic fractions (can have variables in the numerators or denominators)???
 Ading and subtracting involve common denominators
Ex .. 2/21 + 3/4 .... common denom. is 84
= (4x2)/(4X21) + (21X3)/(21X4)
= 8/84 + 63/84 <<<< now add numerators
= 71/84
subtraction done the same way, just subtract the numerators
...
multiplication ... multiply num X num / denom X denom
EX ... 2/3 X 5/8
= 10/24 <<< now reduce
= 5/12
division ... multiply by the reciprocal of the divisor
EX ... 4/5 divided by 3/5
can be written as (4/5) / (3/5) >>>> do NOT change the 1st fraction
= (4/5) X (5/3) <<<< now multiply like above
= 20/15 <<< reduce
= 4/3 <<< answer