Associative Property
The parentheses are grouping operators.
Think about the word associate to make it easier
Answer:
1 A the first store.
2. B The second store.
Step-by-step explanation:
1. The store with the dearest towel is The First one ( $20 compared with $18).
2. The equation for the cost in the first store is P = 20n + 25.
The cost in the second store is given by P = 18n + 35.
For 15 towels first store charges:
20 * 15 + 25 = $325.
Second store charges:
18 * 15 + 35 = $305.
Answer:
First, let's recall some usefull information:
- cot(x) = 1/tg(x) = cos(x)/sin(x)
- tan(x) = sin(x)/cos(x)
We also know that:
- cos(x - pi/2) = sin(x)
- sin(x - pi/2) = -cos(x)
Now we can use those relationships and get:
cot(x - pi/2) = cos(x - pi/2)/sin(x -pi/2) = sin(x)/-cos(x) = -tan(x)
So we have verified the identity, and explained step by step why the identity is true.
Answer:
x=4
Step-by-step explanation:
3x-5 = 7
Add 5 to each side
3x-5+5 = 7+5
3x = 12
Divide each side by 3
3x/3 = 12/3
x = 4
Answer:
Step-by-step explanation:
d
