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Let the two numbers be 'm' & 'n'
Sum = m + n = -9
Product is mn = -90
Hence
m = -90/n
Substitute
-90/n + n = -9
Multiply through by 'n'
-90 + n^2 = - 9n
n^2 + 9n - 90 = 0
It is now in quadratic form ; factor
(n + 15)(n - 6) = 0
n = -15 & n = 6
What else can I help you with?
Two or more angles that sum to 90 degrees?
Two angles that sum to 90 degrees are called complementray angles. The term is not usually applied to three or more angles that sum to 90 degrees.
The sum of two numbers is 12. The sum of the squares of the same two numbers is 90. What are the two numbers?
We get a system of equations: a+b=12 a2+b2=90. Replace 12-a for b, and we get: a2+(12-a)2=90 2a2-24a+144=90 2a2-24a+54=0 a2-12a+27=0 a1=9 a2=3 Because of symmetry, we get two equivalent solutions: a=9, b=3 or a=3,b=9
Two angles whose sum is 90?
acute and acute
What angle is equal to the sum of the other two interior angles?
90
What is the sum of two acute angles of a right triangle?
The sum of two acute angles of a right triangle must equal 90 degrees.
What is the sum as a product of gcf of the two numbers 75 plus 90?
The GCF of 75 and 90 is 15.
Mark is thinking of two numbers his two numbers have a positive sum but they have a negative product give an example of what his answer could be?
10, -9 sum is 1 product is -90. any two numbers one positive one negative, positive has to be larger
What two prime numbers multiplied equal sum of 90?
It is not possible to multiply two prime numbers and get 90. You can add 43 and 47.
What two numbers are the sum of 90 and the difference of 12?
39 and 51
What two even integers have the sum of 90?
The numbers are 44 and 46.
If the LCM of two numbers is 200 the gcf is 10 the sum of the numbers is 90 what are the numbers?
40 and 50
What is the product of five and eighteen?
The product is the number you get when you multiply the two numbers. 5x18 = 90
What is the sum of 28 and the next two consecutive composite numbers?
The three composite numbers are 28, 30 and 32. Their sum is 90.
What is the product of 9 and 10?
90.A product is the answer when two or more numbers are multiplied together.9 x 10 = 90.
What two prime numbers equal sum of 90?
83+7=90 and 83 and 7 are primes
What two numbers have a product of 90?
two numbers which have a product of 90:1 x 902 x 453 x 305 x 186 x 159 x 10
What is the sum of the prime numbers between 90 and 100?
The prime numbers between 90 and 100 are 97. To find the sum of prime numbers between 90 and 100, you simply add 97 to get the total sum. Therefore, the sum of prime numbers between 90 and 100 is 97.
