Tutors Answer Your Questions about Linear-systems (FREE)
Question 596010: I Factored these questions and here are my answers
1)15^3-60x
15x(x^2-4)
2)5x^3-2x^2+5x-2
x^2(5x-2) (5x-2)
(x^2+1)(5x-2)
3)3x^2+x-2
ac=3(-2)=-6 b=1
3x^2+3x-2x-2
3x(x+1)-2(x+1)
(3x-2)(x+1)
Simplify a)(x+y)(x^2-5y^4)
answer:(x^3-xy^4)+(x^2 -5y^5)
4)write the set {...,-3,-1,1,3,5,7,...}using set builder notation.
Click here to see answer by jim_thompson5910(28595)  |
Question 596010: I Factored these questions and here are my answers
1)15^3-60x
15x(x^2-4)
2)5x^3-2x^2+5x-2
x^2(5x-2) (5x-2)
(x^2+1)(5x-2)
3)3x^2+x-2
ac=3(-2)=-6 b=1
3x^2+3x-2x-2
3x(x+1)-2(x+1)
(3x-2)(x+1)
Simplify a)(x+y)(x^2-5y^4)
answer:(x^3-xy^4)+(x^2 -5y^5)
4)write the set {...,-3,-1,1,3,5,7,...}using set builder notation.
Click here to see answer by Alan3354(30993)  |
Question 596010: I Factored these questions and here are my answers
1)15^3-60x
15x(x^2-4)
2)5x^3-2x^2+5x-2
x^2(5x-2) (5x-2)
(x^2+1)(5x-2)
3)3x^2+x-2
ac=3(-2)=-6 b=1
3x^2+3x-2x-2
3x(x+1)-2(x+1)
(3x-2)(x+1)
Simplify a)(x+y)(x^2-5y^4)
answer:(x^3-xy^4)+(x^2 -5y^5)
4)write the set {...,-3,-1,1,3,5,7,...}using set builder notation.
Click here to see answer by solver91311(16897)  |
Question 596016: Solve the following equations...this is what i did
1) 4x/x+2 + 3/x-2=4
when i set it up this is what i got
4x(x-2)+3(x+2)=4(x+2)(x-2)
2.)10b-50/b^2-b-20 divided by 15/6b+24
answer: i factored everything and flipped it over since it says to divide and i got
10(b-5)/(b+4)(b-5) X 6(b+4)/15
10(b-5)/15(b-5) where should the 6 go?
Click here to see answer by jim_thompson5910(28595) |
Question 596026: Questions & answers
Transpose the formula to find s---->Question : a=2(ut-s)/t^2
I got s=l^2(2(ut-s)
Word__Problem
a)When five is taken from six times a certain number the result is fifteen.What is the number?
I GOT
LET X BE THE CERTAIN NUMBER
6X-5=15
6X=15+5
6X=20
X=20/6
b)Sidney paid a grocery bill of $3.90 with dimes and quarters.If there were 4 more dimes than quarters,how many coins of each kind did he have? Not sure how to attempt this?
Click here to see answer by jim_thompson5910(28595) |
Question 595982: I thought I had the answer but I'm stuck. Can you solve this?
A rectangular lot whose perimeter is 320 ft is fenced along three sides. An expensive fencing along the lot's length costs $20 per foot and an inexpensive fencing along the two side widths costs only $8 per foot. The total cost of the fencing along the three sides comes to $2140. What are the lot's dimensions?
Click here to see answer by scott8148(6628)  |
Question 596059: How can this concept be extended to systems involving three variables and three equations as well as solving the following system of three equations and describing the methods you are using:
X + Y + Z = 6
2X – Y + 3Z = 8
3X – 2Y – Z = -17
Click here to see answer by Alan3354(30993) |
Question 596177: After you move into your new unfurnished apartment, you call a furniture rental company. They have a sofa and a love seat combination. They will rent them to you for an initial fee of $79.80 and a monthly rental payment of $64.80. If you choose a “rent-to-own plan” you can keep the furniture after the 24th payment.
a) Write a formula that allows you to compute the total cost (Y) to you for the furniture rental after any number of payments ”x”.
b) Identify the variable, coefficient, and constant for your linear equation.
Click here to see answer by richwmiller(9143)  |
Question 596673: A rectangular lot whose perimeter is 320 ft is fenced along three sides. An expensive fencing along the lot's length costs $20 per foot and an inexpensive fencing along the two side widths costs only $8 per foot. The total cost of the fencing along the three sides comes to $5800. What are the lot's dimensions?
Click here to see answer by scott8148(6628) |
Question 597313: find a fraction whose value is 4/7 and whose denominator is 15 greater than its numerator.
if this is all i am asked, how do i know anything about a numerator or a denominator? how do I slove something like this. when you show me how, can you explain all the steps?
Click here to see answer by solver91311(16897) |
Question 597742: Write a system of equations and solve. The sum of the measures of the two smaller angles in a triangle is 2 degrees less than the measure of the largest angle. If the middle angle measures 40 degrees less than the largest, find the measures of the angles of the triangle.
I realize that my equations will have an x, y and z for the variable but trying to get those equations is what I am having difficulty with.
Click here to see answer by scott8148(6628) |
Question 598672: I'm trying to help my son but I need a little help also, anything would be appreciated, shown in a way I can understand Please.
Solve the system of two linear inequalities graphically.
2y is less than -5x-10
5y is equal to or greater than 4x + 20
step one# graph the first inequality: 2y is less than -5x -10
step two# graph the second inequality: 5y is equal to or greater than 4x + 20
step 3# indicate the region that satisfies both inequalities.
Click here to see answer by stanbon(57361) |
Question 601438: Hi, I have another one: x y=3x-8 I have to find three ordered pairs that satisfy this equation using 1) x=0 2) x=1 3) x=2
Are these answers right? 1) y = -8 2) y = -5 3) y = -2 if these are wrong can you show me step by step how you got the answer.
Click here to see answer by Alan3354(30993) |
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