Answer:
9 years.
Step-by-step explanation:
Make x the number of years passed.
12 + 4x = 39 + x
27 = 3x
x = 9
For this case we have the following functions:
We must subtract the functions:
We build a table of values for 
Answer:
-a²-3b³+c²+2b³-c²
= -(3)² - (3×2)³ + (-3)² + (2 × 2)³ - ( -3)²
= 9 - 24 + 9 + 16 - 9
= 1
answer is 1.
Answer:
5/8
Step-by-step explanation:
3/8 + 1/4
To add these fractions, you need a lowest common denominator. Both 4 and 8 "go into" 8, so the lowest common denominator is 8.
In order to change the denominator 4 to 8, you need to multiply both the numerator and the denominator by 2. So, 1/4 becomes 2/8.
Now, the problem is 3/8 + 2/8.
You can add the numerators, because the denominator is the same for each fraction.
3/8 + 2/8 = 5/8
Answer:
unknown, because the cost of the sandwich, a drink and a bag of chips where not listed in the question
