Tutors Answer Your Questions about Equations (FREE)
Question 26949: I have a finance stock account margin problem where algebra is needed. The equation that needs to be solved comes out as follows:
I have to solve for p, which is the price at which the maintenance margin call will have to be made by the broker. I have tried everything I can think of and can't solve this. Help would be much appreciated, thank you.
Click here to see answer by mbarugel(146) |
Question 27220: I took my test and got a lot of answers wrong. He circled the correct answers but no matter what I try I keep getting mine. For example:
3(x-2)+7=2(x+5)
I distribute first, to get 3x-2+7=2x+10
I simplify to get 3x+5=2x+10 and then again to get x+5=10, then x=5, which is my answer. He circled 9 as the right answer. In fact, 5 isn't even an option (multiple choice). What am I doing wrong?? I keep getting 5 no matter how I do it.
Another is 11x-(6x-5)=40
I combine to get 5x-5=40, then simplify to get 5x=45, and again to get my answer : x=9
He has 7 circled as the right answer.
What am I doing wrong?
Thank you,
Sarah
Click here to see answer by rodriguezh2(15) |
Question 27313: When Tristan visits Isolde on Valentine's Day, he's planning to bring her a one pound box of chocolates. He knows that when they share a one pound box of chocolates, it usually lasts for two weeks. When he eats a one pound box of chocolates on his own it lasts for six weeks.
How long should a one pound box of chocolates last if Isolde eats it alone?
Remember to explain how you solved the problem and show how you know you are correct.
Note: Assume they don't eat faster or slower when they are alone.
Click here to see answer by bmauger(101) |
Question 27670: PLease help with the following true/false and I am looking for examples if anyone has them..thank you so much
State whether the sentence is true or false. Give an example that
supports your answer.
(a) Zero cannot be the solution of an equation.
(b) A negative number cannot be the solution of an equation
(c) If an equation contains a negative number, then the solution of the
equation must be a negative number.
Click here to see answer by wuwei96815(245) |
Question 27818: How so you solve this problem? Photoworks.com charges $7.00 forr processing a 24-exsposure roll and $10.00 for processing a 36-expsosure. After Karens photography field trip, she sent 19 rolls of film to photoworks and pid $151 dollars for processing. How many rolls of each type were processed
Click here to see answer by bmauger(101) |
Question 28240: 2x+3x-2=3x-1+3x+1+3x
Easy! combine all like terms on each side: all numbers with an X and those without:
So,2x+3x=5x
and 3x+3x=6x
and 1+1=2
Then rewrite:5x-2=6x+2
Now pick a side of the equal sign to put consants and move varibles on to opposite side:
So,
5x-2=6x+2 becomes -x=4
divide by -1
and the answer is x=-4
Check by sub. -4 for x in original problem: 2x+3x-2=3x-1+3x+1+3x and you should come out with answer of 0=0
Click here to see answer by Meaty(1) |
Question 28292: Automobile companies advertise two rates for fuel mileage. City mileage is the rate fo fuel consumption for driving in stop-and-go traffic. Highway mileage is the rate for driving at higher speeds for long periods of time Cynthia's new car gets 17 mi/gal in the city and 25 mi/gal on the highway. On one trip, she drove 220 miles on 11 gallons of gas. A. Define variables and write a system of equations for the gallons burned @ ea. rate.
B. Solve this system and explaing the meaning of your solution C. Find the number of city miles and highway miles Cynthia drove.
Will you please help me with this problem. I am having dificulty setting it up. Thank you.
Click here to see answer by Paul(988) |
Question 28336: Please help me solve this equation with the best step-by-step method for this equation. I know to start from the inside out, but what to do with the numbers and letters has confused me.
3d-{7d+[(5d-4)-2(4d-7)-(d+1)]-3}
Click here to see answer by elima(1433) |
Question 28362: "IGNORE THE DOTS IT WAS JUST SO I COULD PUT THE NUMBERS IN THE RIGHT PLACE!" I just dont know where to start and I really need help please!! The question says solve the equation and the equation is:
(m - 1) + 1 = (m + 1)
_______ _______
......2..............3
Click here to see answer by elima(1433) |
Question 28499: 45 50 55 60 65 70 75 80
what is the median without the outlier?
what are the upper and lower quartiles without the outlier?
what is the interquartile range without the outlier?
what are the extremes excluding the outlier?
Click here to see answer by stanbon(75887) |
Question 28640: Ben sold 50 tickets for the basketball game. Adult tickets coast $5.00 and students $3.00 Ben collected $180. How many adult tickets did he sell? How many student tickets did he sell? I think the answer is 35 children and 15 adults. I got this through process of elimination. I've tried x+y=50
5x+3y=50.
Click here to see answer by elima(1433) |
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