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How do you graph x2 plus 10x plus y2 plus 20y - 19 equals 0?
x2 + 10x + y2 + 20y - 19 = 0 x2 + 10x + y2 + 20y = 19 Complete the squares on the LHS: x2 + 10x + 25 + y2 + 20y + 100 = 19 + 25 + 100 = 144 Simplify LHS: (x + 5)2 + (y + 10)2 = 122 This is the equation of all points whose distance form the point (-5, -10) is 12 units. That is, the circle with centre (-5, -10) and radius = 12 units.
What is the Answers to 4(2x plus 5y)?
8x + 20y
How do you solve 8x plus 20y equals -80?
It is a straight line equation that needs to be rearranged into slope-intercept form as follows:- 8x+20y = -80 20y = -8x-80 y = -0.4x-4
Friday jeans were sold at 25 a pair and shirts at 18 each Receipts totaled 441. On Saturday the store priced both items at 20 sold exactly the same number of each item and had receipt of 420.?
Yes, it is. If we denote with x the number of jeans that were sold, and with y the number of shirts that were sold, and create a system equations we will find: 25x + 18y = 441 20x + 20y = 420 Solve this system 4(25x + 18y) = 4(441) -5(20x + 20y) = -5(420) 100x + 72y = 1764 -100x - 100y = - 2100 -28y = -336 y = 12 shirts were sold in each day 20x + 20(12) = 420 20x + 240 = 420 20x = 180 x = 9 pair jeans were sold in each day
How do you solve 12y-4 equals 7y plus 16?
12y - 4 = 7y + 165y = 20y = 4
What is 4x plus 20y?
4x + 20y
What is the answer to 9y-20y plus 25?
If: 9y-20y = 25 Then: y = -25/11
How do you factor 26x to the fourth - 73x squared y plus 20y squared?
(13x^2 - 4y)(2x^2 - 5y)
How do you graph x2 plus 10x plus y2 plus 20y - 19 equals 0?
x2 + 10x + y2 + 20y - 19 = 0 x2 + 10x + y2 + 20y = 19 Complete the squares on the LHS: x2 + 10x + 25 + y2 + 20y + 100 = 19 + 25 + 100 = 144 Simplify LHS: (x + 5)2 + (y + 10)2 = 122 This is the equation of all points whose distance form the point (-5, -10) is 12 units. That is, the circle with centre (-5, -10) and radius = 12 units.
Convert mass 5.0 ml ratios to mass 100ml ratios?
To convert a mass ratio for 5.0 ml to a mass ratio for 100 ml, you need to multiply by a factor of 20. So, if the mass ratio for 5.0 ml is x:y, the mass ratio for 100 ml would be 20x:20y. This maintains the proportion of the mass in the original ratio when scaling up to 100 ml.
What is the Answers to 4(2x plus 5y)?
8x + 20y
Are 5x plus 3y equals 3 and -12x plus 20y equals 0 parallel or perpendicular?
Work it out. 5x+3y=3 3y=-5x+3 y=-5/3x+1 -5/3=the slope in this equation -12x+20y=0 20y=12x y=12/20x y=3/5x 3/5=the slope in this equation If the slopes equal each other, the lines are parallel. If they are the negative reciprocal (the fraction flipped upside down and multiplied by -1) of each other, they are perpendicular. I can't believe I just helped someone this lazy.
How do you solve 8x plus 20y equals -80?
It is a straight line equation that needs to be rearranged into slope-intercept form as follows:- 8x+20y = -80 20y = -8x-80 y = -0.4x-4
Friday jeans were sold at 25 a pair and shirts at 18 each Receipts totaled 441. On Saturday the store priced both items at 20 sold exactly the same number of each item and had receipt of 420.?
Yes, it is. If we denote with x the number of jeans that were sold, and with y the number of shirts that were sold, and create a system equations we will find: 25x + 18y = 441 20x + 20y = 420 Solve this system 4(25x + 18y) = 4(441) -5(20x + 20y) = -5(420) 100x + 72y = 1764 -100x - 100y = - 2100 -28y = -336 y = 12 shirts were sold in each day 20x + 20(12) = 420 20x + 240 = 420 20x = 180 x = 9 pair jeans were sold in each day
X equals 5y2-20y plus 15?
x isn't in the calculation so it cant be solved.
How do you solve 12y-4 equals 7y plus 16?
12y - 4 = 7y + 165y = 20y = 4
Jennifer spent 7.00 for stamps to mail packages. some were 30cents stamps and the rest were 20 cents spamps. the number of 20cent stamps was 5 less than the number of 30cent stamps. write and solve?
30x+20y=700 y=x-5 30x+20(x-5)=700 30x+20x-100=700 30x+20x=800 50x=800 x=16 y=11 So, she bought 16 30-cent stamps and 11 20-cent stamps.
