Tutors Answer Your Questions about Linear-systems (FREE)
Question 1145715: how much low fat milk (1% fat) and how much whole milk (4 % fat) should be mixed to make a 5gal of reduced fat milk (2% fat)?
x+y=5
1x+4y=5•2
Not sure if my equations are set up the correct way. I am confused on what to do since they are in percent. Please help thank you!
Click here to see answer by MathTherapy(10552)  |
Question 1145798: It's 207.5 miles from Amberwood to Bravotown. It's another 220 miles from Bravotown to C-town. Ethan drives 30 miles faster from Bravotown to C-town than from Amberwood to Bravotown. If his combined travel time is 12.3 hours, what are his average speeds?
What is the speed from Amberwood to Bravotown?
and
What is the speed from Bravotown to C-town?
Click here to see answer by ikleyn(52782)  |
Question 1146552: A music festival sold two types of tickets, day passes and weekend passes. The day passes were $137, and the weekend pass was $150. The total ticket sales for the festival were $484,608. They sold 374 more day passes than weekend passes. How many day passes and how many weekend passes were sold?
Click here to see answer by josmiceli(19441)  |
Question 1146552: A music festival sold two types of tickets, day passes and weekend passes. The day passes were $137, and the weekend pass was $150. The total ticket sales for the festival were $484,608. They sold 374 more day passes than weekend passes. How many day passes and how many weekend passes were sold?
Click here to see answer by josgarithmetic(39617) |
Question 1147377: consider
f(t)=−t2+nt+c
defined for all real numbers, where n,c
are both arbitrary constants. The function (f) has a maximum at t*=__________ and its value
is f(t*)=_______________. (Hint: Your last two answers should be formulas that depend on n
n or c, Simplify your answer before writing it on the box).
Click here to see answer by Boreal(15235)  |
Question 1148607: In a particular year, a total of 41 comma 367 students studied in two of the most popular host countries when traveling abroad. If 8629 more students studied in the most popular host country than in the second most popular host country, find how many students studied abroad in each country.
Click here to see answer by ikleyn(52782)  |
Question 1148607: In a particular year, a total of 41 comma 367 students studied in two of the most popular host countries when traveling abroad. If 8629 more students studied in the most popular host country than in the second most popular host country, find how many students studied abroad in each country.
Click here to see answer by Alan3354(69443)  |
Question 1148920: How do I solve:-5x+y-4z=60 How do I solve: -2x+5y+3z=-25
in variables 2x+4y+3z=-12 in variables -4x-3y-8z=-39
of three 6x-3y-2z=-52 of three 6x+8y-5z=14
How do I solve:-2x+15y+z=44 How do I solve: 8x+3y+z=43
in variables 4x+3y+3z=18 in variables -3x+5y+2z=32
of three -3+6y-z=8 of three 5x-2y+5z=24
Click here to see answer by Alan3354(69443)  |
Question 1149152: a person plans to invest twice as much money in a LaSalle bank cd account at 2.5% annual interest as in Franklin's strategic mortgage account at 8% annual interest. how much should the person invest in each account so that the total interest for one year will be $650?
Click here to see answer by josgarithmetic(39617) |
Question 1149259: A family has two cars. The first car has a fuel efficiency of 40 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. During one particular week, the two cars went a combined total of 1600 miles, for a total gas consumption of 65 gallons. How many gallons were consumed by each of the two cars that week?
Click here to see answer by ikleyn(52782)  |
Question 1149424: A chemical company makes two brands of antifreeze. The first brand is 35% pure antifreeze, and the second brand is 60% pure antifreeze. In order to obtain 160 gallons of a mixture that contains 45% pure antifreeze, how many gallons of each brand of antifreeze must be used?
Click here to see answer by josmiceli(19441)  |
Question 1149424: A chemical company makes two brands of antifreeze. The first brand is 35% pure antifreeze, and the second brand is 60% pure antifreeze. In order to obtain 160 gallons of a mixture that contains 45% pure antifreeze, how many gallons of each brand of antifreeze must be used?
Click here to see answer by greenestamps(13200)  |
Question 1149427: A scientist mixes water (containing no salt) with a solution that contains 30% salt. She wants to obtain 150 ounces of a mixture that is 20% salt. How many ounces of water and how many ounces of the 30% salt solution should she use?
Click here to see answer by josmiceli(19441)  |
Question 1149813: A car dealer stocks mid-size and full size cars on her lot, which holds 60 cars. On the average, she borrows $13,000 to purchase a mid-size car and $18,000 to purchase a full size car. How many cars of each type could she stock if her total debt is 1 million. How many cars of each type could she stock if her total debt is 1 million? Set up and solve a system using either elimination or substitution.
Click here to see answer by ikleyn(52782)  |
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