Tutors Answer Your Questions about Equations (FREE)
Question 1164206: Paul has $70,000 to invest. His intent is to earn 15% interest on his investment. He can invest part of his money at 8% interest and part at 18% interest. How much does Paul need to invest in each option to make a total 15% return on his $70?
Click here to see answer by solver91311(24713)   |
Question 1164206: Paul has $70,000 to invest. His intent is to earn 15% interest on his investment. He can invest part of his money at 8% interest and part at 18% interest. How much does Paul need to invest in each option to make a total 15% return on his $70?
Click here to see answer by greenestamps(13198)  |
Question 1164335: A chemist wishes to mix a solution that is 10% acid. She has on hand liters of a 6% acid solution and wishes to add some 14% acid solution to obtain the desired 10% acid solution. she has on hand 6 liters of a 6% acid solution and wishes to add some 14% acid solution to obtain desired 10% acid solution. How much 14% acid solution should she add?
Click here to see answer by josgarithmetic(39616) |
Question 1164335: A chemist wishes to mix a solution that is 10% acid. She has on hand liters of a 6% acid solution and wishes to add some 14% acid solution to obtain the desired 10% acid solution. she has on hand 6 liters of a 6% acid solution and wishes to add some 14% acid solution to obtain desired 10% acid solution. How much 14% acid solution should she add?
Click here to see answer by greenestamps(13198) |
Question 1164335: A chemist wishes to mix a solution that is 10% acid. She has on hand liters of a 6% acid solution and wishes to add some 14% acid solution to obtain the desired 10% acid solution. she has on hand 6 liters of a 6% acid solution and wishes to add some 14% acid solution to obtain desired 10% acid solution. How much 14% acid solution should she add?
Click here to see answer by MathTherapy(10551)  |
Question 1164335: A chemist wishes to mix a solution that is 10% acid. She has on hand liters of a 6% acid solution and wishes to add some 14% acid solution to obtain the desired 10% acid solution. she has on hand 6 liters of a 6% acid solution and wishes to add some 14% acid solution to obtain desired 10% acid solution. How much 14% acid solution should she add?
Click here to see answer by markjames(1)  |
Question 1164335: A chemist wishes to mix a solution that is 10% acid. She has on hand liters of a 6% acid solution and wishes to add some 14% acid solution to obtain the desired 10% acid solution. she has on hand 6 liters of a 6% acid solution and wishes to add some 14% acid solution to obtain desired 10% acid solution. How much 14% acid solution should she add?
Click here to see answer by ikleyn(52776)  |
Question 1164650: In 1990, the cost of tuition at a large Midwestern university was $104 per credit hour. In 1994, tuition had risen to $148 per credit hour.
Determine a linear equation C to represent the cost of tuition in terms of x, the number of years since 1990.
C = __________
In the year 2000, tuition will be $____ per credit hour.
In the year ____, tuition will be $324 per credit hour
Click here to see answer by josgarithmetic(39616) |
Question 1164728: A strong swimmer is swimming in a river, upstream against the current. The river current flows South at 2m/s, and the total velocity of the swimmer is measured at 2m/s North from the rivers bank. What is the swimmers velocity vector relative to the water?
Click here to see answer by solver91311(24713) |
Question 1164104: he following line graphs estimate the global temperature rise between the years of 2010 and 2040. Find the average rate of temperature change (the slope) of Model A: Status quo (in °C per year).
A line graph has "Year" on the horizontal axis and "Temperature rise (°C)" on the vertical axis. There are four models given and four lines.
The models are as follows.
Model A: Status quo
Model B: Shift to lower carbon fuels (natural gas)
Model C: Shift to renewable sources (solar, hydro, and wind power)
Model D: Shift to nuclear energy
The lines are as follows.
The line labeled A starts at 2010 on the horizontal axis and 0 on the vertical axis. It goes up and right to 2040 on the horizontal axis and 1.4 on the vertical axis.
The line labeled B starts at 2010 on the horizontal axis and 0 on the vertical axis. It goes up and right to 2040 on the horizontal axis and 1.0 on the vertical axis.
The line labeled C starts at 2010 on the horizontal axis and 0 on the vertical axis. It goes up and right to 2040 on the horizontal axis and 0.9 on the vertical axis.
The line labeled D starts at 2010 on the horizontal axis and 0 on the vertical axis. It goes up and right to 2040 on the horizontal axis and 0.7 on the vertical axis.
Click here to see answer by Boreal(15235)  |
Question 1164828: The Pool Fun Company has learned that, by pricing a newly released Fun Noodle at $4 sales will reach 8000 Fun Noodles per day during the summer. Raising the price to $6 will cause the sales to fall to 6000 Fun Noodles per day.
Assume that the relationship between sales price, x, and number of Fun Noodles sold, y, is linear. Write an equation in slope-intercept form describing this relationship. Use ordered pairs of the form (sales price, number sold).
predict the daily sales of fun noodles if the price is $4.50
Click here to see answer by josgarithmetic(39616) |
Question 1164891: Perform the indicated operation:
Problem 1
-3(a squared b squared + 3ab -3 +6ab +8 =
-3 squared b squared + 9(ab) - 3 + 8
-3 squared b squared + 27ab +5
or would it be - 3 squared b squared + 9ab = 5
Is this correect?
Problem 2:
2xn(3xn + 2x +5) =
6xn + 4x +10 or would it be 2xn + 3xn +2x +5 = 5xn + 2x +5
Problem 3
Arrange in columns and add:
(x cubed - 64) + (3x squared - 2x +7
column 1 x cubed -64
column 2 3x squared
column 3 -2x +7
when added = -2x +x cubed + 3x squared -57
Thank you
Click here to see answer by Alan3354(69443)  |
Question 1164912: Use two equations in two variables to solve the application. See Example 1. (Objective 1)
The salaries of the President and Vice President of a certain country total $682,400 a year. If the President makes $217,600 more than the Vice President, find each of their salaries.
Click here to see answer by ikleyn(52776) |
Question 1164913: Use two equations in two variables to solve the application. See Example 2. (Objective 1)
A carpenter wants to cut a 12-foot board into two pieces so that one piece is 2 times as long as the other. How long should each piece be?
shorter piece
ft
longer piece
ft
Click here to see answer by josgarithmetic(39616) |
Question 1164974: A right triangle with a line going across the triangle creating another small triangle.Its a 90 degree traingle and their is a bisector creating an angle between an angle and they want to know what x is. How do I know when to use sign or cosine in a problem?
Click here to see answer by solver91311(24713) |
Question 1164957: Acme Robots produces the Robo-Maid. Their annual profit P for producing
x units per year is given by the equation P(x) = -.02x2 + 400x - 1000.
(a) What is their annual profit if 10 units are produced?
(b) How many units should they produce each year in order to maximize
profit?
(b) What is the maximum annual profit?
Click here to see answer by solver91311(24713) |
Question 1164981: I’m didn’t find an exact word for word topic so sorry if I chose the wrong one.
My topic is mixture word problems and the question is how many qt. of 12% saline solution must be mixed with 4 qt. of pure water to make a 9% solution.
I’ve tried couple of different ways using tables and equations but I can’t seem to find the right answer.
Sincerely random kid from a random school that needs help in math.
Click here to see answer by solver91311(24713) |
Question 1164981: I’m didn’t find an exact word for word topic so sorry if I chose the wrong one.
My topic is mixture word problems and the question is how many qt. of 12% saline solution must be mixed with 4 qt. of pure water to make a 9% solution.
I’ve tried couple of different ways using tables and equations but I can’t seem to find the right answer.
Sincerely random kid from a random school that needs help in math.
Click here to see answer by josgarithmetic(39616) |
Question 1164981: I’m didn’t find an exact word for word topic so sorry if I chose the wrong one.
My topic is mixture word problems and the question is how many qt. of 12% saline solution must be mixed with 4 qt. of pure water to make a 9% solution.
I’ve tried couple of different ways using tables and equations but I can’t seem to find the right answer.
Sincerely random kid from a random school that needs help in math.
Click here to see answer by ikleyn(52776) |
Question 1164990: So Im doing solving equations with the variable on both sides of =. I can do that easily but when fractions on both sides are involved it gets a little trickier but I can still do it by multiplying each side by the lcd. The question I'm asking is when there are fractions on both side of the equations with the variables in them, for example. x/3 + 3 = 2/6x + 6 . This isnt a real equation (or it might be) but its just for example. So how do I find solve the equations with the variables on both sides of = with fractions? I don't know if I can ask more wordy questions on this sight but im confused and want to do math better.
Click here to see answer by Boreal(15235) |
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36721..36765, 36766..36810, 36811..36855, 36856..36900, 36901..36945, 36946..36990, 36991..37035, 37036..37080, 37081..37125, 37126..37170, 37171..37215, 37216..37260, 37261..37305, 37306..37350, 37351..37395, 37396..37440, 37441..37485, 37486..37530, 37531..37575, 37576..37620, 37621..37665, 37666..37710, 37711..37755, 37756..37800, 37801..37845, 37846..37890, 37891..37935, 37936..37980, 37981..38025, 38026..38070, 38071..38115, 38116..38160, 38161..38205, 38206..38250, 38251..38295, 38296..38340, 38341..38385, 38386..38430, 38431..38475, 38476..38520, 38521..38565, 38566..38610, 38611..38655, 38656..38700, 38701..38745, 38746..38790, 38791..38835, 38836..38880, 38881..38925, 38926..38970, 38971..39015, 39016..39060, 39061..39105, 39106..39150, 39151..39195, 39196..39240, 39241..39285, 39286..39330, 39331..39375, 39376..39420, 39421..39465, 39466..39510, 39511..39555, 39556..39600, 39601..39645, 39646..39690, 39691..39735, 39736..39780, 39781..39825, 39826..39870, 39871..39915, 39916..39960, 39961..40005, 40006..40050, 40051..40095, 40096..40140, 40141..40185, 40186..40230, 40231..40275, 40276..40320, 40321..40365, 40366..40410, 40411..40455, 40456..40500, 40501..40545, 40546..40590, 40591..40635, 40636..40680, 40681..40725, 40726..40770, 40771..40815, 40816..40860, 40861..40905, 40906..40950, 40951..40995, 40996..41040, 41041..41085, 41086..41130, 41131..41175, 41176..41220, 41221..41265, 41266..41310, 41311..41355, 41356..41400, 41401..41445, 41446..41490, 41491..41535, 41536..41580
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