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Question 181839: Method of Substitution
4. Solve by substitution. Check your answers.
a) x+2y=3
5x+4y=8
Pleaseeeee help me i dont even know how to do it...:(
Click here to see answer by solver91311(24713)

Question 181837: Method of Substitution
d) 2x+3y=-1
x=1-y
Please!!! thank you very much
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Question 181834: Method of Substitution
b) x=-4y+5
x+2y=7
Pleaseeeee and thank you very much...
Click here to see answer by solver91311(24713)

Question 181831: Method of Substitution
1. Solve each linear system using the method of substitution. Check your answers.
b) x=-4y+5
x+2y=7
Pleaseeeee and thank you very much!!!:)
Click here to see answer by solver91311(24713)

Question 181847: Method of Substitution
5. Find the point of intersection of each pair of lines.
a) 2x=y+5
3x+y=-9
Pleaseeeeeeee and thank you very much!!!!!
Click here to see answer by josmiceli(19441)

Question 181747: Method the Substitution
14. The following three lines intersect to form a triangle.
y=x+1
2x+y=4
x+y=5
a) Find the coordinates of each vertex.
b) Is this a right triangle? Explain how you know.
Thank you very muchhhhhhhhhh pleaseeeeeeeeeee
Click here to see answer by solver91311(24713)

Question 181745: Method Substitution
12. Explain why the following linear system is not easy to solve by substitution.
3x+4y=10
2x-5y=9
Thank you very much and i need it today.
Click here to see answer by checkley77(12844)

Question 181880: Method of Substitution=Problem Solving
6. Samantha works twice as many hours per week as Adriana. Together they work a total of 39 hour one week.
a) State how ou will assign variables.
b) Write an equation to represent the information in the first sentence.
c) Write an equation to represent the information in the second sentence.
d) Use the method of substitution to find the number of hours worked by each person.
Please and thank you very much.
i tried so much but i didnt get it at all.:(
Click here to see answer by tvandenberg(45)

Question 181935: the length of one leg of a right triangle is 7 meters less than the length of the other leg. the length of the hypotenuse is 13 meters. find the lengths of the legs.
Click here to see answer by jim_thompson5910(35256)

Question 181966: Please help me solve this x^2-4x(-4)= 0
Click here to see answer by jim_thompson5910(35256)

Question 181715: The Method Substitution
6. Samantha works twice as many hours per week as Adriana. Together they work a total of 39 hour one week.
a) State how you will assign variables.
b) Write an equation to represent the information in the first sentence.
c) Write an equation to represent the information in the second sentence.
d) Use the method of substitution to find the number of hours worked by each person.
Pleasee can you do it now and my english is not very good. thanks
Click here to see answer by Mathtut(3670)

Question 182037: I am confused on exactly what is a quadratic function?
Click here to see answer by Alan3354(69443)

Question 182092: How do I come up with a real life application for a quadratic function
Click here to see answer by stanbon(75887)

Question 182182: Application
QUESTION: How should I set up this equation so that I can use the quadratic formula?
90. Foul ball. Suppose Charlie O�Brian of the Braves hits a
baseball straight upward at 150 ft/sec from a height of 5 ft.
a) Use the formula to determine how long it takes the ball
to return to the earth.
Attempt: x^2 + 150x - 5 = 0
Then use the formula
+ ________
x = -b - V b^2-4ac
_____________
2a

Click here to see answer by solver91311(24713)

Question 182203: The altitude in feet of a toy rocket t seconds after launch is given by the function S(t) = -16t^2 + 128t.
1. Find the maximum altitude reached by the rocket.
2. How long does it take for the rocket to reach this maximum altitude?
Click here to see answer by vleith(2983)

Question 182228: 8x^2 + 6x -2 =0

answer: x= -1 or 1/4
need a full breakdown of how my text book got tht answer
Click here to see answer by solver91311(24713)

Question 182268: Factor the expression Chapter 5 Algebra II
X4-50x2+625
Please help me with example to solve the above.
Thank You.. Aaron
Click here to see answer by rapaljer(4671)

Question 182282: How do I find a quadratic model for the set of values?
(-2,-8),(0,-2),(4,-62)
Thanks Aaron.
Click here to see answer by stanbon(75887)

Question 182368: Volume of a rectangular Chinese box: The volume of this box is 192 cu. units. Find its length and width.
Click here to see answer by Alan3354(69443)

Question 182343: Quadratic Function:
If a soldier in basic training fires a rocket propelled grenade straight up from ground level with an initial velocity of 256 ft/sec, then its height above the ground at time t seconds is given by function h(t) = -16t^2 + 256t.
1. What is the maximum height reached by the grenade?
2. How long does it take for the grenade to reach the ground?
Click here to see answer by tvandenberg(45)

Question 182367: A lot has the shape of a right triangle with one leg 2m longer than the other.
The hypotenuse is 2m less than twice the length of the shorter leg. Find the length of the shorter leg.
Click here to see answer by tvandenberg(45)

Question 182512: Simplify:
sqrt(147x^3 * y^6)

Click here to see answer by jim_thompson5910(35256)

Question 182508: Simplify by combining like terms:
3sqrt32 - 5sqrt2
Click here to see answer by eperette(173)

Question 182507: Simplify:
sqrt6(sqrt3 + sqrt10)
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Question 182510: Tell what quadrants the solution area is in for the following system of inequalities:
x + y < 3
x - 2y > 6
Click here to see answer by Mathtut(3670)

Question 182511: Solve using a system of equations (show the two equations you used then show the solutions):
Tickets for a concert sold for $11 and $8. If 600 tickets were sold for one evening and the receipts are $5550, how many of each kind of ticket were sold?

Click here to see answer by checkley77(12844)

Question 182616: IF you are looking at a graph of a quadratic equation how do you determine where the solutions are?
Click here to see answer by Earlsdon(6294)

Question 182648: My group and I tried to work on this one and ended up with A(t)= -1.5t^2 + 900t + 0 but I dont think that is correct. Any help you could give me would be greatly appreciated!

Farmer Bill has 70 acres on which he wants to plant a pear orchard. Three neighboring farms with similar soil conditions already have established orchards. Based on the yield from the neighboring farms, the yield per tree appears to be a linear function of the tree density (trees per acre). Letting �t� be the number of trees planted per acre, the function P(t)= -1.5t + 900 represents the yield in pears per tree.
What function of �t� would then give the yield per acre for the orchard? Assuming Farmer Bill wants to maximize his yield, what is the optimal number of trees to plant per acre, and what will be the total yield from the farmers 70 acre orchard?

1. Write an equation for the yield per acre as a function A(t)
2. Absolute minimum or absoulte maximum?
Click here to see answer by Alan3354(69443)

Question 182509: Solve using a system of equations (show the two equations you used then show the solutions):
A sofa and chair cost $850 as a set. If the sofa cost $100 more than twice as much as the chair what is the cost of each?
Click here to see answer by MathGuyJoe(20)

Question 182673: 5a.

(i) How many solutions exist for a quadratic equation? Explain.
(ii) How do we determine whether the solutions are real or complex?

I have no idea how to approach either of these. thanks for the help.
Click here to see answer by Alan3354(69443)

Question 182674: 5b.

What three techniques can be used to solve a quadratic equation? Demonstrate these techniques on the equation "12x2 - 10x - 42 = 0."
I appreciate your help, thank you.
Click here to see answer by Alan3354(69443)

Question 182677: 5b.
What three techniques can be used to solve a quadratic equation? Demonstrate these techniques on the equation "12x2 - 10x - 42 = 0."
thank you for your help.
Click here to see answer by Fombitz(32388)

Question 182692: A student opens a mathematics book to 2 facing pages. The product of the page numbers is 1806. Find the page numbers. The first page number is
The second page number is
Click here to see answer by Mathtut(3670)

Question 182706: how do I solve this equation? I have to find the real roots for
Click here to see answer by vleith(2983)

Question 182769: Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function f(x) = -2x^2+2x+1
Click here to see answer by Mathtut(3670)

Question 182776: Method of Elimination.
9. Liz works at ballpark selling bottled water. She sells 37 bottles in one shift. The large bottles sell for $5 each and the small bottles sell for $3 each. At the end of one game, she has taken in $131.
a) How many large bottles did Liz sell?
b) How many small bottles did she sell?
Please and thank you very much
Click here to see answer by Mathtut(3670)

Question 182785: Method of Elimination Problem Solving
18. What happens when you solve the system 2x+3y=6 and 6x+9y=0 by elimination? Use a graph in your explanation.
Pleasee and thank you very much...
Click here to see answer by eperette(173)

Question 182781: Method of Elimination Solving Problem
13. To solve the following linear system by elimination, Brent firsat multiplied each equation by 10. Explain why he did this step. Complete the solution.
0.3x-0.5y=1.2
0.7x-0.2y=-0.1
Please i am really confused thank you very much..
Click here to see answer by stanbon(75887)

Question 182844: Determine the axis of symmetry,the vertex and two other points for showing all work. Then, graph this function. Be sure to label the axis of symmetry, the vertex and the two additional points and indicate the scale by labeling the axes
Click here to see answer by jim_thompson5910(35256)

Question 182783: Method of Elimination solving Problem
15. Bhargav stops in at a deli to get lunch for his crew. He buys five roast beef and three vegetarian sandwiches and the order costs $27.50. The next week, he pays he pays $23.00 for two broast beef and six vegetarian sandwiches. How much does one roast beef sandwiches cost?
Please and thank you very much...
Click here to see answer by checkley77(12844)

Question 182782: Method of Elimination solving problem
14. Solve each linear system.
a) 0.2x-0.3y=1.3
0.5x+0.2y=2.3

b) 0.1a-0.4b=1.9
0.4a+0.5b=-0.8
Pleaseeeeeee and thanksssssss a lottttt
Click here to see answer by checkley77(12844)

Question 182904: 4. Find the area and perimeter of each rectangle.
a) Length=1.5m width= 0.25m
b) L= 4 1/6 in W=2 1/3 in.

Click here to see answer by jim_thompson5910(35256)

Question 182901: working with triangles: 10. If angle s =49 and angle t = 11, then angle r = ______.
Click here to see answer by Alan3354(69443)

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