Tutors Answer Your Questions about Linear-systems (FREE)
Question 379405: if a caterer charges a fixed cost for preparing a dinner plus an additional cost for each person served and you know that the cos will be for 100 students will be $750 and the cost for 150 students will be $1050,what would the caterer's fixed cost and the cost per student be?(using linear equations)
Click here to see answer by stanbon(57222)  |
Question 379446: b) A family of 2 adults and 3 kids go and watch a movie. The price of an adult ticket is m and the price of a child ticket is n such that:
2m + 3n = 28 and n = 12 - m
I thought I would solve it by simply doing
2m+3(0)=28 and then solve for n the same but this is not working out.
2m=28
m=14
Click here to see answer by rapaljer(4667)  |
Question 379503: An algebra teacher drove by a farmyard full of chickens and pigs. The teacher happened to notice that there were a total of 100 heads and 270 legs. How many chickens were there? How many pigs were there?
Click here to see answer by ptaylor(2048)  |
Question 379760: The Everton college store paid $1644 for an order of 44 calculators. The store paid $9 for each scientific calculator. The other, all graphic calculators, cost the store $57 each. How many types of each calculator was ordered?
Click here to see answer by Edwin McCravy(8880)  |
Question 380842: I am so confused. I don't understand how to do the following problem:
4x-2y=12 directions say Plot the graphs of the following given equations.Use the "X" and "Y" intercept method, and a check point. Use the given "X" value when solving for the check point. Really confused please help me understand.
Click here to see answer by rfer(12644) |
Question 380853: uggh.. still don't get this its says plot the graphs of the following given equations. zuse the"X" and "Y" intersept method, and a check point. zuse the "x" value when solving for the checkpoint.
3x+2y=6 x-intercept (_,0)
y_intercept (0,_)
Checkpoint (1,_)
Click here to see answer by stanbon(57222) |
Question 381040: write an equation for each of the following statements and plot the graph of each equation. use the "X" and "Y" intercept method to plot the graph. a checkpoint is not reuired for this section. I really need someone to explain how I do this step by step. This is the statement:
The value of y is 3 less than two times the value of x.
Equation=___________________________________
x-intercept=(_,_)
y-intercept=(_,_)
Click here to see answer by stanbon(57222) |
Question 381352: Could someone please help? I need to graph a system of linear inequalities, then test to see what satisfies both. Here is the system:
x+y>4
x+y<-1
Here's what I have done so far:
For Line 1, the first inequality:
x-intercept is (4,0) and y-intercept is (0,4)
For Line 2, the second inequality:
x-intercept is (-1,0) and y-intercept is (0,-1).
Ok, both these lines are dashed lines, since neither are equal, and therefore included, so I end up with two parallel dashed lines. My problem: I can't find an answer to satisfy BOTH inequalities, so I don't know what to shade in as "true".
Can someone please set me straight and tell me what I am doing wrong? Thank you!!!
Click here to see answer by jim_thompson5910(28476) |
Question 381352: Could someone please help? I need to graph a system of linear inequalities, then test to see what satisfies both. Here is the system:
x+y>4
x+y<-1
Here's what I have done so far:
For Line 1, the first inequality:
x-intercept is (4,0) and y-intercept is (0,4)
For Line 2, the second inequality:
x-intercept is (-1,0) and y-intercept is (0,-1).
Ok, both these lines are dashed lines, since neither are equal, and therefore included, so I end up with two parallel dashed lines. My problem: I can't find an answer to satisfy BOTH inequalities, so I don't know what to shade in as "true".
Can someone please set me straight and tell me what I am doing wrong? Thank you!!!
Click here to see answer by stanbon(57222) |
Question 381954: Okay
well i have to make a word problem for
this equation.
2x+y=5
7x+4y=15
I solved both by subsutution and elmination
My answers were x=5 y=-5
But i don't know how i can make a word problem with a negative number
I really need help.
Please and Thank you for you time(:
Click here to see answer by mananth(12270)  |
Question 382185: 2x-3=y Plot the graph of the equation. Use the "X' and "Y" intercept method to plot the graph. show all work. a checkpoint is not required. Please help me understand this I have tried subtracting 3 from each side to get answer but I must be doing something wrong.
Click here to see answer by stanbon(57222) |
Question 382470: i need to know how to do somethings such as i have an 85% alcohol solution and a 50%alcohol solution and i need a 65% solution. and i need 55 liters all together. how many liters of each do i need? i have the eqautions
x=how many liters of 85%
y=how many liters of 50%
i have x+y=55 (liters)
and i have .85x+.50y= .65
please reply as soon as possible, thank you
Click here to see answer by stanbon(57222) |
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