A mixed number<span> such as 7 1/4 can be converted to a </span>decimal<span>. It is implied that 7 1/4 is really 7 + 1/4 and that 7 = 7/1 therefore we are first adding the fraction 7/1 + 1/4. Since 4 is the denominator original fraction part we will use it as our common denominator. 7/1 * 4/4 = 28/4. Hope this helps</span>
The answer is -8
because f(x+1) where x= -9
-9+1 = -8
X - 9 = 4x + 5
-x -x
-9 = 3x + 5
-5 -5
-14 = 3x
divide.
4.66 = x
There are two unknowns in this problem. To start, let's assign variables to each of them. Let x be the age of Jacob and y be the age of Isaiah. Then, we formulate equations based on the relationships stated.
x = 7 + y --> eqn 1
x + y = 63 --> eqn 2
Substituting eqn 1 to eqn 2, then solve for x and y:
(7+y)+y = 63
7 + 2y = 63
2y = 63 - 7
2y = 56
y = 56/2
y = 28
x = 28 + 7 = 35
Therefore, Jacob is 35 years old, and Isaiah is 28 years old.