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Find a pair of numbers x and y whose sum and product are both 8?
Wiki User
∙ 14y ago
x = 8 - y and also x = 8/y so 8 - y = 8/y ie 8y - y2 = 8 or y2 - 8y + 8 = 0.
There isn't an integer solution so using the quadratic formula gives
(8 +/- sqrt (64 - 32))/2
= (8 +/- 5.66)/2
= 4 +/- 2.83
= 6.83 or 1.17 which are the two numbers wanted, to the nearest hundredth.
Check: 6.83 + 1.17 = 8; 6.83 x 1.17 = 7.99. Near enough!
Wiki User
∙ 14y ago
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What two numbers multiply to get 30 and add to get 1?
31
What pair of numbers have a odd product 8 7 5 4?
The only way to get an odd product when multiplying two whole numbers is when both of them are odd. Thus, in your example, the only way is by choosing the odd numbers 7 and 5, whose product is 35.
How do you Find 2 consecutive even integers whose sum is 126?
Divide 126 by 2 and choose the even numbers on both sides.
Why do numbers have both positive and negative roots?
because you can get a positive number as EITHER a product of 2 positive numbers OR the product of the negatives of the SAME 2 numbers; the product of 2 negative numbers is positive.
How do you find a low estimate for the product of two decimals round both factors to?
to find a low estimate for the product of two decimals, round both factors
How do you find the product of two numbers when both numbers are positive?
It is a positive.
How do you find the product of two numbers when both positive?
Find the product of their absolute values (without regard for their signs) and then label the product positive. The process is exactly the same if both numbers are negative.
What two numbers multiply to get 30 and add to get 1?
31
What pair of numbers have a odd product 8 7 5 4?
The only way to get an odd product when multiplying two whole numbers is when both of them are odd. Thus, in your example, the only way is by choosing the odd numbers 7 and 5, whose product is 35.
How do you find the product of two numbers when both are negatives?
If both numbers are negative then all you have to do is ignore the negative signs and multiply the numbers because the negatives cancel each other out.
What is true about the product of two even numbers?
The product of two even numbers is even. The product of two even numbers will be even. If they are both positive numbers, it will be greater than both of them. If one of them ends in 0, the product will end in 0.
Find two numbers whose sum is 56 and whose product is 783?
27 and 29 I did this in my head by applying certain rules: the two numbers had to end in 7 and 9 it's the only way I could think other 1 and 3 to get a 3 at the end of the product they both had to be bigger than 20 and smaller than 30 smaller than twenty and the product is less than 400, bigger than 30 and the product is bigger than 900 After applying these two rules, the only possible answer was 27 and 29
Is the product of 2 prime numbers always even?
No, the product of 2 prime numbers is not always even. If one of the prime numbers is 2, then the product will be even. However, if both prime numbers are odd, then the product will be odd.
Find the product of -21 and -3?
Note that since both numbers are negative we end up with a positive number in the end.
How do you Find 2 consecutive even integers whose sum is 126?
Divide 126 by 2 and choose the even numbers on both sides.
What is the product of two numbers is zero?
One or both of the numbers must be zero.
Why do numbers have both positive and negative roots?
because you can get a positive number as EITHER a product of 2 positive numbers OR the product of the negatives of the SAME 2 numbers; the product of 2 negative numbers is positive.
