What adds to equal -9 but multiplies to equal 6?
-9x___=6 so 6/-9= -2/3 -9(-2/3)=6
What do you multiply to get 4 and add to get -9?
Okay, I'm going to assume that this is some sort of homework question, so I will not give you the entire answer, because, well, homework is damn important. Let us assume that for some values of a and b, a * b = 4; a + b = -9. These are our initial equations.If a + b = -9, we can isolate either a or b in terms of the other, that is to say, a = -9 - b; if a+b = -9; That would mean (a+b)^2 = (-9)^2; which implies a^2 + 2ab + b^2 = 81. we have b in terms of a, we know what ab is, so you would get a quadratic equation in which you would solve for two values of a from which you would get your corresponding value of b from the initial equations. I'm sorry if I assumed incorrectly that this was a homework question, but it's best to show someone the path as opposed to showing them the answer itself. "Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime"Hope this helped OP!
What 2 numbers multiply to -30 and add to 9?
no numbers
What 2 numbers add up to 21 but multiply to 70?
Let, x+y = 21, x*y = 70 => y = 70/xx+(70/x) = 21 => x^2 + 70 = 21 x => x^2 - 21 x + 70 = 0 (It is in the form of a x^2 + b x + c = 0)So, a = 1, b = -21, c = 70, -b = -(-21) = 21Therefore, x = [(-b + Square root (b^2–4ac))/2a, (-b - Square root (b^2–4ac))/2a]x = [(21 + 12.69)/2, (21 - 12.69)/2]x= (33.69/2, 8.31/2)x = (16.84, 4.16)Therefore, the 2 numbers are 16.84 and 4.16
What 2 numbers add up to -4 but multiply to 24?
Well , if you are searching an answer for real numbers , i am going to have to dissapoint you , but here is a complex solution :x+y=-4x*y=24x = -4-y(-4-y)y=24-4y-y²=24y²+4y+24 = 0(y+2)² + 20 = 0(y+2)² = -20y+2 = sqrt(-20)y_1 = 4.4721i - 2y_2 = -4.472i - 2x + 4.472i-2 = -4x = -2 - 4.472i(-2–4.472i)*(-2+4.472i) = 244 - 20i² = 24i² = -14 - 20*-1 = 244 + 20 = 24And it’s done , i am sorry that it is a bit messy , but i don’t know how to convert it to cool looking math font :)
What numbers multiply to -90 and add up to -9?
-90 1 90 2 45 3 30 5 18 6 15 9 10 The answer is 6 and 15.
What two numbers multiply to get 2 and add to get -9?
ab=2a+b=-9a=-9-b, so: b(-9-b)=2-b^2–9b-2=0use quadratic formula, get answers (-9+sqrt(73))/2 and (-9-sqrt(73))/2a x answers = 2a= 2/answers, which just gives the answers back as Aso a = b = (-9-+sqrt(73))/2can prove by (-9+sqrt(73))/2 x (-9-sqrt(73))/2 = 2(-9+sqrt(73)/2) + (-9-sqrt(73)/2) = -9if you use plus for one of them, use minus for the other :)
What numbers multiply to 1/9 and add up to 2/3?
1/3 and 1/3.1/3 * 1/3 is 1/9 because multiplying the numerators 1*1 gives 1, and multiplying the denominators 3*3 gives 9.1/3 + 1/3 is 2/3 because adding the numerators 1 + 1 equals 2 and the common denominator is 3.