Math problem involving "work"?
Assuming that you and your cousin work at a steady pace... it takes your cousin 7 hours to cut one cord of wood, ie 1/7of a cord per hour. it takes the two of you 5 hours to cut the wood together... your cousin does (1/7)x5 or 5/7th of the job.... and it takes you 5 hours to do 2/7th of the job(the rest of the job)... reducing this it takes you 2.5 hours to do 1/7th of the job...or it takes you 2.5x7 = 17.5 hours to do the whole job...
Can someone help with a math problem?
If there is a 2 percent chance of damaging it in the mail, then you expect to lose the money 2 percent of the time. The other 98 percent of the time, you lose nothing. So the expected loss is (0.02)(-250) which is $5. So it IS worth it to insure the package for $4, because the cost of the insuring it is less than the expected loss. Think of it another way. If you had to mail 100 separate PDAs, would you insure each of them? We expect 2 of them to be damaged, costing you $500. However, if you insured it, it would cost you only $400 to insure, meaning that you'd make $100 from insurance.
Please help I need help with my little cousins math problem -__-?
It says use the data in the table to write a multiplication or division story for each number fact. Solve. Building supplies and number in a box - fasteners = 6 and bolts = 12 1. 6 x 4 2. 12 ÷ 4
Math problem... Help please!?
Suppose your cousin needs to choose a six-digit number to use with a new debit card, and repetition is allowed. How many six-digit passwords are possible? a. 1,000,000 b. 151,200 c. 720 d. 60 Please help me out here and tell me how you got the answer. Thank you! <3 :)
I'm Always having trouble with Math. What's wrong with me?
I would suggest that either nothing is wrong with you or you may have some very common issues associated with mathematics.Dyscalculia is a learning disability associated with having trouble with mathematics and logic. Some researches suspect that dyscalculia may be as common as dyslexia. My cousin has dyscalculia and I discovered, while tutoring him, that he was always trying to do math in a certain cadence and at a certain speed. I found it fascinating, because I do believe that there is a very common cadence and speed that a typical math teacher uses. If you find that you are trying to do homework problems at a certain speed, or rhythm, try to break yourself of that. The best way to break the cadence is to look for a good one on one tutor or to sit down with your teacher to discuss problems.Many people have math anxiety and frustration that might not be associated with dyscalculia. I love and excel at mathematics mostly due to the nice endorphin hit that I get when I solve a problem. Often the longer it took and the more mistakes that I made along the way, the higher the endorphin hit. I would suggest that there’s something a bit wrong with me. For normal people, who value real accomplishment, spending hours on an effectively pointless problem should seem a bit misguided. Why does my brain chemistry reward me so much for simply replicating an answer that is on a page in the back of a book? I’m not sure.Finally, don’t conflate intelligence with mathematical ability. For many skilled mathematicians, mathematics is a drug. And many of us so enjoy the problem at hand, we sometimes forget that the solution to real world problems may not lie within mathematics. We’ll spend hours optimizing a solution, when we could have just walked down the hall and asked the guy that’s being doing something 30 years what he would do.Good luck.
Math problem question, please help :) ?
at a cc, 35 people play golf, 28 swim, and 24 play tennis. Of these people, 6 play golf and tennis only, nine play folf and swim only, and seven play tennis and swim only. Eight people do all three activities. How many members are there altogether? I have no idea how to do this one can you help me Five kissing cousins met @ a family reunion. each cousin kissed each other of the cousins just once. How many kisses? Is 16 the right answer?
Some math help for my cousin 5 question step by step if possible?
When you go through this, make sure I have put the parentheses in the correct place in the question. #1. 3^x * 9^-x = 27^x 3^x * 3^-2x = 3^3x 3^-x = 3^3x -x = 3x (by taking log base 3) x = 0 #2. 1/(e^-x^2) = (e^3x)(1/e^2) e^2 = (e^-x^2)(e^3x) e^2 = e^(-x^2+3x) -x^2+3x=2 (by taking ln) x^2-3x+2=0 (x-1)(x-2)=0 x = 1 or x = 2 #3. (Notice that atheerai go this one wrong. Make sure you check your answers by plugging them back into the original equation.) 2^2x + 2^(x+2) -12=0 (2^x)^2 + (2^2)(2^x) - 12 = 0 or, alternatively y^2 + 4y - 12 = 0 where y = 2^x (y + 6)(y - 2) = 0 y = 2^x = -6 is not possible but y = 2^x = 2 gives x = 1 #4. 2^(x+1) = 5^(1-2x) (x+1)ln2 = (1-2x)ln5 xln2 + ln2 = ln5 - 2xln5 x(ln2 + 2ln5) = ln5 - ln2 x = (ln5 - ln2)/(ln2 + 2 ln5) #5. ln(x-3) - lnx = 3 ln((x-3)/x) = 3 (x-3)/x = exp(3) (taking e to the power of both sides) x - 3 = x*exp(3) x(1-exp(3)) = 3 x = 3/(1-exp(3))
In 3 years my cousin will be 5 years older than me. If my cousin is 9 years old now how old am I?
In 3 years your cousin will be 5 years older than me. But he is always going to be 5 years older than you assuming you are both alive. So if your cousin is 9, you are 4 years old. No wonder you cannot do arithmetic yourself but have to ask others.