10(7g-9h)-4h-8(-h+8g)
solve for g
7g + 8g since both are positive
15g
solve for h
9h+4h since both are negative
-14h
10-8 since the 8 is negative
12
12(15g-14h)
Since you typed the same equation twice I didn’t know if you meant to , so if it was meant to be doubled it would be
4(30g-28h)
<span>A standard normal distribution is a normal distribution that has a mean of 0 and standard deviation of 1. A z value of 0.00 divides the standard normal distribution into two equal halves with 50% on each side.</span>
Xy = 45
(x+y)/2=7
---------
x+y = 14
Ah. So we can simplify the problem to, 'the product of two numbers is 45 and their sum is 14'. This shouldn't too hard to guess: the numbers are 5 and 9
37000 letters were written in all. The reason for this is because to solve this you would do 940x40 which gets you to 37000.