0
mn = 80
m -n = -79
Substitute
m - 80/m = -79
m^2 - 80 = -79m
m^2 + 79m = 80 (NB Notice change of signs)
Quadratic Eq'n
m = { - 79 +/- sqrt[)79)^2 - 4(1)(-80)}] / 2(1)
m = { - 79 +/- sqrt[6241 + 320}]/ 2
m = { -79 +/- sqrt[6561]} / 2
m = { - 79 +/- 81}/2
m = -160 / 2 = -80 or
m = 2/2 = 1
Hence n = 1 + 79 = 80
What else can I help you with?
What number is after 79?
80
What is 79 rounded to the nearest ten?
80
How many tens are in 79?
1
What is the median of 72 89 67 81 75 79 81 80 62 64 83?
median is 79. Write in order; median is middle number: {72, 89, 67, 81, 75, 79, 81, 80, 62, 64, 83} → {62, 64, 67, 72, 75, 79, 80, 81, 81, 83, 89} To find middle number, count the number of data items, add 1 and divide by 2. If this is a whole number, that is the data item which is the median; if it is a fraction, take the mean average of the data items of the positions either side of the fraction (eg if the fraction is 3.5, take the mean average of the 3rd and 4th data items) There are 11 data items → median is (11+1)/2 = 6th data item → median is 79
What plus 80 makes110?
Subtract the known figure from the known answer to get the missing figure. 110-80=30.
What number is after 79?
80
What equal to 80?
80 is equal to 80 because it is the same number....... :)ex. (79=79) (100=100)
What is prime number nearest to 80?
61, 67, 71, 73, 79, 83, 89, 97, so 79 is nearest
What prime number follows 79?
83 is the first prime number after 79.
What is the prime number nearest 80?
It is: 79
What is 79 rounded to the nearest tens' number?
80
What set of numbers has a mean of 80?
There are an infinite number of sets with mean 80. Here are some: {80, 80, 80}, {80, 80, 80, 80, 80, 80} {79, 80, 81}, {79, 79, 80, 81, 81}, {79, 79, 80, 82} (1, 80, 159}, {-40, 200} To produce a set of n numbers with mean 80, start with any set of n-1 numbers. Suppose their sum is S. Then add the number 80*n-S to the set. You will now have n numbers whose sum is S+80*n-S = 80*n So the mean of this set is 80.
If the number of electrons in an atom is 35 and its mass number is 80 what is the number of nuetrons?
The number of neutrons is 45 because you subtract 80 to 35.
The average of 4 numbers is 85 in the numbers 79 80 and 65 what number would come next?
If three of the four numbers are 79, 80, and 65, and the average is 85, then the final number will equal (85 x 4) - 79 - 80 - 65 = 116.
What are the prime number from 70-80?
71, 73, 79
What is 79.90 for rounded to the nearest whole number?
It is 80 and not 79
What is the rounded number for 79.27?
It can be rounded to 80, 79 or 79.3
