We found 99 items matching your search.
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Simultaneous equations |
2008-07-23 |
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From Franco: Solve
3 D + E - F = -10
-2 D - F = -4
-3 D - 4 E - F = -25
Franco Answered by Penny Nom. |
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Simultaneous equations |
2008-02-29 |
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From CONOR: I was wondering if you could help me with this problem
7x - 5y = -1
3y = 4x Answered by Penny Nom. |
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System of equations |
2007-12-06 |
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From Jenn: change the equation,x-y=4 to form y=mx+b
the solution to the system of equations y=2x and y=-x+3 is Answered by Stephen La Rocque. |
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Chicken and goat feet |
2007-12-05 |
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From Kim: Old McDonald raises goats and chickens. The animals have a total of
100 heads adn 360 feet. How many goats and how many chickens does Mr.
McDonald have? Answered by Stephen La Rocque and Penny Nom. |
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Four triangles in a square |
2007-10-15 |
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From Kristina: A square with side lengths of 6 cm is divided into 3 right triangles and a larger isosceles triangle. If the three right triangles have equal area, find the exact area of the isosceles triangle. Answered by Stephen La Rocque. |
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Substitution method |
2007-10-11 |
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From Kevin: 3xx+2y=-36-y=11 Answered by Stephen La Rocque. |
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Coin jar |
2007-10-07 |
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From a student: Sally empties his jar of coins. It contains $3.75 in nickels, dimes, and
quarters. The number of dimes is twice the number of nickels and the number
of quarters is three less than the number of nickels. Determine how many nickels,
dimes, and quarters were in the in the jar. Answered by Stephen La Rocque. |
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Solving four simultaneous equations (system of four linear equations) |
2007-10-07 |
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From Johan: I need some help in solving this question
x + 2y - 3z + 4w = 12
2x + 2y - 2z + 3w = 10
0 + y + z + 0 = -1
x - y + z - 2w = -4 Answered by Stephen La Rocque. |
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Finding equations, intersection point of two lines at right angles |
2007-09-22 |
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From Yaz: Find the equation of the line joining A(-1,-9) to B(6,120). Another line passes through C(7,-5) and meets AB at rigth angle of D. Find the euation of CD and calculate the co-ordinates of D. Answered by Stephen La Rocque. |
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Finding the radius of an inscribed circle |
2007-07-05 |
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From Maria: I need to find the radius of a circle which is inscribed inside an obtuse triangle ABC. I know all the angles and all the lengths of the triangle. Answered by Stephen La Rocque and Chris Fisher. |
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Simultaneous equations : the Elimination method |
2007-06-21 |
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From Patricia: I need to find the value of X and Y using the Elimination method.
5/x + 3/y=4
25/x-2/y=3 Answered by Stephen La Rocque. |
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Simultaneous inequalities |
2007-06-18 |
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From Freddy: Watson Electric has production facilities in Valley Mills, Marlin,and Hillsboro.
Each one produces radios,stereos,and TV sets.
There production capacities are
Valley Mills: 10 radios, 12 stereos, and 6 TV sets per hour
Marlin: 7 radios, 10 stereos, and 8 TV sets per hour
Hillsboro: 5 Radios, 4 Stereos, amid 13 TV sets per hour
QUESTION
How many hours should each plant be scheduled to fill an order of 1095 radios, 1230 stereos,
and 1490 TV sets? Answered by Stephen La Rocque. |
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Angles of depression |
2007-06-13 |
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From Phonda: The pilot of a small private plane can look forward and see the control tower for a small airstrip. Beyond that is a large factory that is 3 milies from the airstrip. The angles of depression are 12.5 degrees and 4.8 degrees respectively.
Find the airplane's altitude, to the nearest ten feet. Answered by Stephen La Rocque. |
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System of equations |
2007-05-24 |
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From Chris: Find all real solutions (x,y,z,w) of the system of equations:
2y= x + x/17, 2z= y + y/17, 2w = z + z/17, 2x= w + w/17 Answered by Penny Nom. |
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Set up two simultaneous equations |
2007-05-21 |
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From Admire: The cost of producing windscreen wipers blades at a factory ais partly fixed (due to operating overheads) and partly dependent on the number of blades produced. It costs $300 to produce 1000, and $600 to produce 5000 blades. How much would it cost to produce 24000 blades? Answered by Penny Nom. |
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