The pH of distilled water is usually LESS THAN 7, because when it contacts air CO2 gas begins dissolving into the water.
P(-2.57 ≤ Z ≤ 1.27) = P(Z ≤ 1.27) - P(Z ≤ -2.57)
P(Z ≤ 1.27) = 0.8980
P(Z ≤ -2.57) = 1 - P(Z ≤ 2.57) = 1 - 0.99488 = 0.00512
P(-2.57 ≤ Z ≤ 1.27) = 0.8980 - 0.00512 = 0.89288
0.8929 (4 d.p.)
Convert the fraction to a decimal by dividing the numerator by the denominator to approximate the decimal result.
Answer=0.6666666666666
A scaled version means that our leading coefficient will change. Let's set up an equation to find our leading coefficient, a.
g(x) = a * x^2
Now that we have our equation, we need a point that is on g(x). The point given is (4,8). Let's use that point and plug x and y into our equation so that we can solve for a.
8 = a * (4)^2
8 = a * 16
a = 1/2
All that's left to do is plug in our a value into g(x).
g(x) = 1/2 x^2
Hope this helps!! :)
1 ) 116/17 = 7.1875 which is 5.1875 from 2, 17/8 is 2.125 which is 0.125 from 2 and 63/32 is 1.968 which is 0.032 from 2. 63/32 is the closest to 2.
