Tutors Answer Your Questions about Systems-of-equations (FREE)
Question 117546:
1. Nicole sells gift wrap for 4.00 per package and greeting cards for 10.00 per
package. Nicole seels 205 packages in all and recieves a total of 1084. How many pagkagers of gift wrap did she sell?
2. How would you set this equation up?
Click here to see answer by scott8148(6628)   |
Question 117546:
1. Nicole sells gift wrap for 4.00 per package and greeting cards for 10.00 per
package. Nicole seels 205 packages in all and recieves a total of 1084. How many pagkagers of gift wrap did she sell?
2. How would you set this equation up?
Click here to see answer by checkley71(8403) |
Question 118184: Hi, I am trying to review for a final and am stuck on this one.
Use method of substitution to solve system:
x-y^3=1
2x=9y^2+2
This is what I have done:
x=1+y^3
2(1+y^3)= 9y^2+2
2+2y^3=9y^2+2
2y^3=9y^2+2
2y^3-9y^2=0
y(y+3)(y-3)
Click here to see answer by stanbon(75887) |
Question 118189: This is an application that falls under this category. I have worked it to the end but need a little guidance.
An airline that flies from LA to Albuquerque with a stopover in Phoenix charges a fare of $45 to Pheonix and a fare of $60 from LA to Albuq. A total of 185 passengers boarded the plane in LA and fares totaled $10,500. How many passengers got off of the plane in Pheonix?
This is how I sat the problem up:
x+y= 185
45x+60y= 10,500
I know this problem should be solved using elimination.
So I mult E1 by -45 in order to eliminate.
-45(x+y)= 185
-45x-45y= 185
45x+60y= 10,500
With this I end up with..
15y=10,685
then I divided by 15 but got a decimal...am I doing this right?
Click here to see answer by scott8148(6628) |
Question 118187: 1a) At the school play on Fri. night 120 tickets were sold. Student tickets cost $5 each, and Adult tickets colst $7 each. the total sale for the evening was $670. How many of each type of tickets were sold?
1b) Write a sytem of equations that represents this problem, then solve and asnwer the question.
Answer for 1a- amount of Student tickets sold is 85
amount of Adult tickets sold is 35
Could you please help me with 1b I'am not exactly sure how to do it :(
Click here to see answer by scott8148(6628) |
Question 118930: the booster club voted on where they would go for their annual trip.a majority of the club voted to go to a baseball game.they bought 29 tickets.som epf the tickets cost $21 each and some cost $27 each.the total cost of all the tickets was $675.how many ticktes of each price did they buy?
Click here to see answer by solver91311(24713)  |
Question 120790: An isosceles riangle has a perimeter of 50 cm. The sum of the length of the base and the ehight of the triangle is 31 cm. Find the area of the triangle.
I set it up for 2a + b = 50
and b + h = 31
I have a lot of triangle formulas at my disposal, such as the area of a triangle = 1/2 bh, or Heron's formula for the area of a triangle. I know that we can also use the special formula for the area of an isosceles triangle. The quadratic formula of a squared + b squared = c squared too. But I guess I keep getting stuck with the fact that I've got 3 unknowns rather than 2, re: a, b, and h. In the other problems in the book, I generally have one linear equation, which I solve for a, then I substitute a into the quadratic equation. This one has me really stuck. All help very much appreciated.
Click here to see answer by Fombitz(32388)  |
Question 121544: At the high school band's annual spaghetti dinner, the members served 210 dinners and collected $935. The band leader did not designate which ticket was an adult or child dinner. You need to know that to prepare the correct amount of food and for future planning. Each adult dinner cost $6 and each child's dinner cost $3.50.
Let a = number of adult dinners
Let c = number of child dinners
1. Write two equations to represent the total amount raised from the dinner and the total
Use substitution to solve the above system of equations. How many adult dinners were sold and how many child dinners were sold?
I would like to know of how do i solve this problem??
Click here to see answer by algebrapro18(249) |
Question 121540: Please help me figure this out.
A cold faucet can fill a sink in 12 minutes, and a hot water faucet can
fill it in 15. The drain can empty the sink in 25 minutes. If both
faucets are on and the drain is open, how long will it take to fill
the sink?
Answers:
a) 8 4/13 minutes
b) 8 9/10 minutes
c) 9 1/11 minutes
d) 9 8/9 minutes
e) 10 2/15 minutes
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 121542: Please help me figure this out.
Starting at noon, how long will it take for the hour and minute hands of a
typical analog clock to form a 90 degree angle?
Answers:
a) 15 minutes
b) 16 1/3 minutes
c) 16 4/11 minutes
d) 16 23/60 minutes
e) 16 5/12 minutes
Click here to see answer by MathLover1(20849)  |
Question 121538: Please help me figure this out.
60 students were interviewed and the following info was obtained:
20 own a horse
31 own a cat
32 own a dog
7 own a horse and cat
14 own a cat and dog
12 own a dog and horse
5 own all three
How many interviewed students didn't own a dog, cat, or horse?
Answers:
a) none
b) 2
c) 3
d) 5
e) 6
Click here to see answer by checkley71(8403) |
Question 121967: a mortocycle breaks down and the rider has to walk the rest of the way to work. The motorcycle was traveling at 45 mi/h, and the rider walks at a speed of 6 mi/h. The distance from home to work is 25miles, and the total time for the trip was 2 hours. How far did the motorcycle go before it broke down?
Click here to see answer by bucky(2189) |
Question 124897: A group of 80 people attend a ball game. There were three times as many children as adults in the group. Write a system of equations that you could use to set up this problem, where a is the number of adults and c is the number of children in the group. Solve the system of equations for c, the number of children in the group.
Click here to see answer by checkley71(8403) |
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