Two possible mappings (from infinitely many) are:
f(x) = 2*x + 12
and
f(x) = x2 - 13x + 68
where where x = 7, 8
The Greatest Common Divisor (GCD) for 26 28 is 2.
-2 + 28 = 26
30
The highest common factor of the numbers 28 and 26 is 2.
2y+26 = 28 2y = 28-26 2y = 2 y = 1
30
26/28 simplifies to 13/14.The greatest common factor of 26 and 28 is 2; when the top and bottom of the fraction are divided by 2, the answer is 13/14.
A nickel ion with a +2 charge has lost 2 electrons. Since the atomic number of nickel is 28 and it is now a +2 ion, it has 26 electrons remaining (28 - 2 = 26).
The difference is two thirds (2/3) To answer these questions, one needs to turn mixed fractions, such as eight and two thirds, into (im)proper fractions, such as twenty six thirds. The question then becomes what is the difference between 26 thirds and 28 thirds. The answer: 28/3-26/3 = (28-26)/3 = 2/3
The GCF is 2.
-6z 2 = 3z+ 4z+28 -6z+2 +3z = 3z+ 4z +28 +4z -6z+4z+2 = 3z+ 28 -10z+2 -3z= 28 - 2 -10z + -3z = 26 -13z/13 = 26/-13 z = -2
26 = 3b - 2 - 7b 28 = -4b b = -7