Answer:
700=700
Step-by-step explanation:
Answer:
-67x + 10
Step-by-step explanation:
3x + 10(1 - 7x)
(use distributive property)
3x + 10 - 70x
(simplify)
3x - 70x + 10
-67x + 10
Answer:
1. Isolate
2. Closed
3. Reversed
If you have more problems with things similar to this, I recommend this website, it gives a detailed description on how to solve the equations:
https://www.mathsisfun.com/algebra/inequality-solving.html
The speed upstream is the difference between the boat speed and the current speed. It is (12 mi)/(4 h) = 3 mph.
The speed downstream is the sum of the boat speed and the current speed. It is (32 mph)/(4 h) = 8 mph.
The speed of the boat is the average of these: (3 + 8)/2 = 5.5 mph.
The speed of the current is that less the difference: 5.5 - 3 = 2.5 mph.
_____
<u>Check</u>
Boat + Current = 5.5 + 2.5 = 8 mph
Boat - Current = 5.5 - 2.5 = 3 mph
Answer:
P = 20x + 6
Step-by-step explanation:
Perimeter formula:
P = 2(l + w)
Given:
l = 8x - 1
w = 2x + 4
Work:
P = 2(l + w)
P = 2(8x - 1 + 2x + 4)
P = 2(10x + 3)
P = 20x + 6
