Tutors Answer Your Questions about Linear-systems (FREE)
Question 390844: I am trying to help my daughter understand how to solve a word problem but can't remember how to solve it myself -
"If sales of 30 cattle bring in a profit of $4500 and sales of 50 cattle bring in a profit of $12,500, and the profit model is linear, how much profit will the sale of 75 cattle bring in?"
$4,500 divided by 30 = $150 per head
$12,500 divided by 50 = $250 per head
my thought was that linear would mean 75 x $350 = $26,250 but that was not one of the multiple choice answers
Click here to see answer by stanbon(75887)  |
Question 390844: I am trying to help my daughter understand how to solve a word problem but can't remember how to solve it myself -
"If sales of 30 cattle bring in a profit of $4500 and sales of 50 cattle bring in a profit of $12,500, and the profit model is linear, how much profit will the sale of 75 cattle bring in?"
$4,500 divided by 30 = $150 per head
$12,500 divided by 50 = $250 per head
my thought was that linear would mean 75 x $350 = $26,250 but that was not one of the multiple choice answers
Click here to see answer by scott8148(6628)  |
Question 390844: I am trying to help my daughter understand how to solve a word problem but can't remember how to solve it myself -
"If sales of 30 cattle bring in a profit of $4500 and sales of 50 cattle bring in a profit of $12,500, and the profit model is linear, how much profit will the sale of 75 cattle bring in?"
$4,500 divided by 30 = $150 per head
$12,500 divided by 50 = $250 per head
my thought was that linear would mean 75 x $350 = $26,250 but that was not one of the multiple choice answers
Click here to see answer by solver91311(24713)  |
Question 391303: hi well in class we are covering systems of linear equations in word problems and i need help
"the difference of two numbers is 16.the greater number is 5 less than 4 tiimes the smaller number.find the numbers"
thank you
Click here to see answer by haileytucki(390)  |
Question 391303: hi well in class we are covering systems of linear equations in word problems and i need help
"the difference of two numbers is 16.the greater number is 5 less than 4 tiimes the smaller number.find the numbers"
thank you
Click here to see answer by mananth(16946)  |
Question 391304: . Calib received $50 for his birthday that he put in his piggy bank. Each week, he puts 2 more dollars in his bank so that the amount of money in dollars D in his bank is given by D = 2w + 50 where w is the number of weeks. Is this model linear, and, if so, what is the slope and y-intercept?
Click here to see answer by haileytucki(390) |
Question 391586: below are a rectangle and a right triangle.
The perimeter of the rectangle is 34 cm. The perimeter of the triangle is 30 cm. Find the values of m and n.
On the right triangle, the base is n and the side is m. The slope however is n+1. The rectangles base is n and the side is m.
Click here to see answer by edjones(8007)  |
Question 391694: I need help on the following word problem: A ring is made out of gold and copper. Gold has a density of 19.3 g/cm3. Copper has a density of 9 g/cm3. Mass m, density d, and volume v are related by the formula m=dv. The ring has a volume of 8.4 cm3, and a mass of 104.44g.
Let a=volume of gold, let c=volume of copper, mass of gold =dv=19.3a, mass of copper=dv=9c.
Solve the following system by elimination to find out how many grams of gold are in the ring.
a+c = 8.4
19.3a+9c=104.44
also what is the percent of gold by mass?
Click here to see answer by mananth(16946) |
Question 391551: I'm trying to help my niece with her homework and I can't remember at all how to solve this problem.
She's trying to solve this linear equation or system. She says she's supposed to get the answer by using the 3y?
2x-3y=-7 (negative 7)
3x+y=-5 (negative 5)
I have the answer for her but would really like to know how to solve this and to show her the correct way.
Thank you!
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 391710: my Question is like that :3x+4y=s
6x+8y+t
a)determine particular values for s and t so that the system is consistent.
b)determine particular values for s and t so that the system is inconsistent.
c)what relationship between the values of s and t will guarantee that the system is consistent?
my work was stuck at here :eqn 1+eqn 2
-2s+t=0
2s=t
Click here to see answer by user_dude2008(1862) |
Question 391852: I need help solving these equations using the elimination method.
x + 8y = 28
-x + 5y = 11
5x + 2y = -13
7x - 3y = 11
0.3x - 0.2y = 4
0.2x + 0.3y = 29/19
8x - 9y = 32.5
7y - 2x = -10.5
0.05x + 0.25y = 11
0.15x + 0.05y = 12
Click here to see answer by richard1234(7193)  |
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