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Question 965172: give the slope and y-intercept for each equation and then the number of solutions for the system:
x + 200y = -30
10x - 70y = 100
I have attempted to solve this by first solving for y, and then inputting y into the equations, but my "y" doesn't seem right...I came up with y = -400/270... I didn't go further because it didn't seem correct
Click here to see answer by josmiceli(19441)

Question 965168: Tell whether the equation represents direct variation. If so, identify the constant of variation.
5x+6y=-1 and 7y+x=5
Click here to see answer by josgarithmetic(39617)

Question 963937: x − y2 + 9 = 0
2x2 + y2 − 10 = 0
What are all possible solutions using the elimination method?
Click here to see answer by Fombitz(32388)

Question 965310: what is the longest line segment that can be drawn in a right rectangular prism that is 14 cm long, 13 cm wide, and 12 cm tall?
Click here to see answer by Fombitz(32388)

Question 965309: a square pyramid has base edge length 10 cm. the slant height of the pyramid is 13 cm. what is the volume of the pyramid?
Click here to see answer by josgarithmetic(39617)

Question 965346: the equation of a line having the given slope and containing the given point: m = -3; (-2,0)
Click here to see answer by ankor@dixie-net.com(22740)

Question 965424: Use the given conditions to write an equation for each line in point-slope form.
Passing through (2, -3) and perpendicular to the line whose equation is y = 1/5 x + 6.
Click here to see answer by lwsshak3(11628)

Question 965453: Find the x-intercept for y=(6x+1)(2x-3)
Click here to see answer by jim_thompson5910(35256)

Question 965464: can you please help me in solving for x;y;z
x+y-2z=5 .........equation 1
x+z=4.......equation 2
y-z =6........equation 3

Click here to see answer by Theo(13342)

Question 965464: can you please help me in solving for x;y;z
x+y-2z=5 .........equation 1
x+z=4.......equation 2
y-z =6........equation 3

Click here to see answer by Edwin McCravy(20055)

Question 965610: (x/p) (y/q)=2
and x y=p q
find x and y...
Click here to see answer by macston(5194)

Question 965783: Y=5x
Click here to see answer by Fombitz(32388)

Question 966033: Find the ordered pair -3x+8y=-8
Click here to see answer by Alan3354(69443)

Question 966071: The ratio of black walnuts to red oak trees at a tree farm is 4:5. The tree farm has 1,200 black walnut trees. How many black walnut and red oak trees does the tree farm have altogether?
Click here to see answer by rfer(16322)

Question 966076: Line A passes through points (6,8) and (1,-7). Line B is perpendicular to Line A. Line C is perpendicular to Line B. What is the slope of Line C?
Click here to see answer by josgarithmetic(39617)

Question 966063: How to solve using log properties

Click here to see answer by hkwu(60)

Question 966439: sketch a line with the given slope m and y intercept b. Write its slope intercept form.
m=-1/2, b=-2
Click here to see answer by MathLover1(20849)

Question 966549: what's the slope of y=-3x+4
Click here to see answer by EdenWolf(517)

Question 966554: what's the slope of y=-3+4 and how do you draw a graph for this equation
Click here to see answer by Alan3354(69443)

Question 966660: Why negative sign is taken when finding slope of line 2x+3y+6=0.
Its slope is -2/3. But why minus sign is taken?
Please give me correct explanation.
Click here to see answer by josmiceli(19441)

Question 966770: Three bags of potatoes and four cases of corn cost $40. Five bags of potatoes and two cases of corn cost $34. Find the cost of one bag of potatoes and the cost of one case of corn. [Show or explain the procedure used to obtain your answer.]
Click here to see answer by josgarithmetic(39617)

Question 966883: What are the points for the following equation: x=y+3
5x=3y=-25
Click here to see answer by Fombitz(32388)

Question 967050: When x = 1, then y =
Click here to see answer by Fombitz(32388)

Question 967039: The first equation of each system is multiplied by 4. By what number would you multiply the second equation in order to eliminate the x variable by adding? First equation: 3x - 2y = 4 ; second equation: 3x - 2y = 4 ; second: 4x + 5y = 28
Click here to see answer by Fombitz(32388)

Question 967151: What is the simplification of 4! ? Thank you
Click here to see answer by Fombitz(32388)

Question 967176: Boat building, iron foundries, and amusement parks and arcades are three of the industries with the highest rates of occupational injuries. The graph shows the number of nonfatal injuries per 1000 full-time workers in 2004 in these three industries. In a typical group of 1000 workers from each of these industries, there were 30 more injuries in iron foundries (I) than in amusement parks and arcades (A), and there were 12 more injuries in amusement parks and arcades than in boat building (B). Among these 3000 workers, there were 387 nonfatal occupational injuries. How many of the injuries took place in each industry?
Click here to see answer by macston(5194)

Question 967337: when the sum of three and four is subtracted from the product of 3 & 4 what is the difference
Click here to see answer by stanbon(75887)

Question 967347: -2(y-4)=20-2y-12 How would this problem be solved?
Click here to see answer by stanbon(75887)

Question 967361: 1/25 (x-4) + 0.018 = 0.07 (x-2) - 0.06 (x-0.3)
I keep getting x=4 but when I check it the answer doesn't check out.
Click here to see answer by addingup(3677)

Question 967361: 1/25 (x-4) + 0.018 = 0.07 (x-2) - 0.06 (x-0.3)
I keep getting x=4 but when I check it the answer doesn't check out.
Click here to see answer by MathTherapy(10552)

Question 967432: I am trying to solve this equation:
3(4x+5)-2(x-7)=9
I came up with an answer: x=5/7
Is this the right answer? If not can you help me find the right answer?
Click here to see answer by josgarithmetic(39617)

Question 967561: Write an equation for the line parallel to the line −25x + 5y = 4 through the point (−8, −7)
Click here to see answer by MathLover1(20849)

Question 967534: Find the equation of the line that contains the point (3,17) and is parallel to the line y=-2/3x-5.
Click here to see answer by lwsshak3(11628)

Question 967206: A line contains the point (-3,-1) and has a slope of 1/3. Which equation represents this line?
A) x + 3y = 0
B) x - 3y = 0
C) 3x + y = 0
D) 3x - y = 0
Click here to see answer by lwsshak3(11628)

Question 967654: Hello, this problem involves with plugging values into a shape formula of a trapezoid. I believe the book had given me a wrong answer. Could someone please help validate my answer. I would really appreciate, thank you.

Here is the trapezoid formula:
A = 1/2h(b+B)
Values given are:
A = 91, h = 7 and b = 12

Click here to see answer by rothauserc(4718)

Question 967669: Hello I need help with this problem. Thank you.
Problem:
a/24 = 15/16
Click here to see answer by stanbon(75887)

Question 967660: Hello, the following problem involves with finding the radius of a cylinder with just the surface area given. I tried plugging in these values but the book has a different answer. Could someone please help with clarification.
Here is the problem:
S = 2πrh
Given values are:
S = 120π, h = 10
Click here to see answer by Theo(13342)

Question 967665: Hello, I need help with this problem. Thank you.
The U.S. postal requires that any box sent by Priority Mail have length plus girth (distance around) totaling no more than 108 in. The maximum volume that meets this condition is contained by a box with a square end 18 in. on each side. What is the length of the box? What is the maximum volume?
Click here to see answer by Theo(13342)

Question 967663: Hello, could someone please help me solve this problem. Thank you in advance.

Problem:
The perimeter of a rectangle is 36 m. The length is 2 m more than three times the width. Find the length and width of the rectangle.
Click here to see answer by Horlaye(27)

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