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What is the perimeter of a regular polygon when each side is 4 cm and has 90 diagonals showing work?
Let the number of sides be x and use the diagonal formula:- If: 0.5*(x^2 -3x) = 90 then x^2 -3x = 90*2 If: x^2 -3x = 180 then x^2 -3x -180 = 0 Using the quadratic equation formula gives a positive value of 15 for x Therefore perimeter of the polygon: 15*4 = 60 cm
What is X if 2X squared plus 10 equals 100?
If 2x2 + 10 = 100 then: 2x2 = 100 -10 2x2 = 90 x2 = 90/2 x2 = 45 x = 6.708 (to 3 decimal places only)
What is -90 - 39x plus 3x squared factored?
3x2-39x-90 = (3x+6)(x-15) when factored
What is 6x plus 5 equals 95-3x?
6x + 5 = 95 - 3x The main goal is to get "x" by itself. So you can first subtract 5 from both sides because whatever you do on one side of the equation, you do to the other side. 6x = 90 - 3x Next add 3x on both sides. 9x = 90 Last divide by 9 on both sides. x = 10
When one half of the supplement of an angle is added to the complement of the angle the result is 120 degrees can you find the measure of the complement?
X = "the angle".Supplement of the angle = (180-x).Complement of the angle = (90-x).The statement says: . . . 1/2 (180-x) + (90-x) = 120Eliminate the first set of parentheses: . . . 90 - x/2 + (90-x) = 120Eliminate the second set of parentheses: . . . 90 - x/2 + 90 - x = 120Combine the 'x' terms on the left: . . . 90 + 90 - 3x/2 = 120Subtract 180 from each side: . . . -3x/2 = -60Multiply each side by -2: . . . 3x = 120Divide each side by 3: . . . x = 40
What is the answer for this quadratic equation 2x2 - 3x - 90?
That's not an equation - it doesn't have an equal sign. Assuming you mean 2x2 - 3x - 90 = 0, you can find the solution, or usually the two solutions, of such equations with the quadratic formula. In this case, replace a = 2, b = -3, c = -90.
What is the perimeter of a regular polygon when each side is 4 cm and has 90 diagonals showing work?
Let the number of sides be x and use the diagonal formula:- If: 0.5*(x^2 -3x) = 90 then x^2 -3x = 90*2 If: x^2 -3x = 180 then x^2 -3x -180 = 0 Using the quadratic equation formula gives a positive value of 15 for x Therefore perimeter of the polygon: 15*4 = 60 cm
What is X if 2X squared plus 10 equals 100?
If 2x2 + 10 = 100 then: 2x2 = 100 -10 2x2 = 90 x2 = 90/2 x2 = 45 x = 6.708 (to 3 decimal places only)
What is -90 - 39x plus 3x squared factored?
3x2-39x-90 = (3x+6)(x-15) when factored
What is 3x-2 equals 88 find x?
x is 30 to work it out- 3x 30=90 90-2=88
How would you write 4x 3y-90 in slope-intercept form?
4x + 3y= 90 -4x -4x _______________ 3y = -4x + 90 /3 /3 ________________ y = -4/3x + 30 hope that helped
What is the measure of an angle if it is nine degrees more than double its complement?
set x = the compliment 90 = x + 9 + 2x = 3x +9 90 = 3x + 9 81 = 3x 27 = x = the compliment 90 - x = 63 degrees
What is the prime of 90?
answer: 90 ^ 9x10 ^ ^ 3x3x5x2 2 2 exponet is 3x 5
What is the answer to this problem -3x90?
-3 x 90 = -270 -3x = 90 x = -30
When angles are complementary the sum of their measures is 90 degrees two complementary angles have measures 2X -10 and 3X -10 find the measures of each angle?
2x-10+3x-10=90 5x-20=90 5x=110 x=22
What equation is 90 degrees right angle to the equation y equals 3x plus 5?
Any line with the equation of the form 3y = -x + c where c is any constant.
What are the factors of the quadratic trinomial 27 x squared minus 90 x plus 27?
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