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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 else can I help you with?
3x plus 4y equals 90 4x-3y equals -5?
This is a simultaneous equation question. 4(3x+4y = 90) 3(4x-3y = -5) Multiply the top equation by 4 and the bottom equation by 3 then subtract the bottom equation from the top equation remembering that in maths a minus from a minus is equal to a plus. 12x+16y = 360 12x-9y = -15 And when subtracted: 0+25y = 375 Divide both sides of the equation by 25 to find the value of y: y = 15 Substitute 15 for y into the original equation to find the value of x: Solution: x = 10 and y = 15
What is 3x-2 equals 88 find x?
x is 30 to work it out- 3x 30=90 90-2=88
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
Age problem involving quadratic equations with answers?
in quadratic equation it must be in standard form, ax^2 + bx + c = 0. Jenny is five years older than Marian. In three years, the product of her age and Marian's age five years ago will be 90 years. Find their present age. Solution: Let x= Marian's present age x + 5= Jenny's present age The working
The sum of three consecutive integers is 267 What are the three integers?
x + (x+1) + (x + 2) = 267 3x + 3 = 267 3x = 264 x = 88 Answer: 88, 89, 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 are the solutions to the quadratic equation n2 -n -90 equals 0?
If: n squared -n -90 = 0 Then the solutions are: n = 10 or n = -9
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.
How do you solve the simultaneous equation 3x plus 9y equals 120 5x plus 5y equals 90?
3x + 9 y = 120 5x + 5y = 90 multiply first equation by 5 ( both sides) multiply second equation by 3 ( both sides) 15 x + 45 y = 600 15 x + 15 y = 270 subtract 30y = 330 divide by 30 y = 11 substiute y into first equation 3 x + 9 y = 120 3x + 99 = 120 3x = 21 x = 7
The sum of a number and one half of the number is fourtyfive write and equation to solve this problem?
X + X/2 = 45 so 3X/2 =45 3X=90 X=30
What is x to the 2nd power minus 9x plus 90?
A quadratic equation, if there's an equals stil to come... Otherwise it's just an expression.
When angles are complementary the sum of their measures is 90 degrees. Two complementary angles have measures of 2x - 10 degrees and 3x-10 degrees. Write an equation that models this situation?
2x-10+3x-10 = 90 degrees and the value of x works out as 22 degrees
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 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
What two number add to make 27 but multiply to make 90?
117
What is -90 - 39x plus 3x squared factored?
3x2-39x-90 = (3x+6)(x-15) when factored
3x plus 4y equals 90 4x-3y equals -5?
This is a simultaneous equation question. 4(3x+4y = 90) 3(4x-3y = -5) Multiply the top equation by 4 and the bottom equation by 3 then subtract the bottom equation from the top equation remembering that in maths a minus from a minus is equal to a plus. 12x+16y = 360 12x-9y = -15 And when subtracted: 0+25y = 375 Divide both sides of the equation by 25 to find the value of y: y = 15 Substitute 15 for y into the original equation to find the value of x: Solution: x = 10 and y = 15
