Answer:
Surface area of the rectangular prism= 
Step-by-step explanation:
Given Dimensions of the rectangular prism are:

Surface Area of a rectangular prism=

=
The surface area of the rectangular prism is 
#1 divide by 6n to both sides to get n by itself
#2 multiply both sides by 6/5a to get a by itself
#3 multiply both sides by 2/5x to get x by itself
When you have whole numbers (no decimals) you can divide. When you have numbers with decimals, convert them to fractions and multiply by the reciprocal to get the variable by itself.
Answer:
1.45
Step-by-step explanation: The question is asking "what was his average speed per miles per hour" and it says "26.1 miles in 3hrs and 18mins". So it wants to know the speed per hour.
Your gonna take 26.1 and divide it by the 18mins, which will give you 1.45
Answer: (x - 3)² + (y + 0.5)² = 3.25 → 
<u>Step-by-step explanation:</u>
Concentric means they have the same center but different radii.
The equation of a circle is: (x - h)² + (y - k)² = r² where
- (h, k) is the center of the circle
- r is the radius of the circle
Complete the square to find the center of the circle
x² - 6x + _____ + y² + y + _____ = 1 + ____ + ____
↓ ↓
-6/2 = -3 1/2 = 1/2
Equation: (x - 3)² + (y + 1/2)² = r²
Since the circle passes through point (x, y) = (4, -2), input that into the equation to find r².
(x - 3)² + (y + 1/2)² = r²
(4 - 3)² + (-2 + 1/2)² = r²
(1)² + (-3/2)² = r²
1 + 9/4 = r²
13/4 = r²
Equation: (x - 3)² + (y + 1/2)² = 13/4 → 
In decimal form: (x - 3)² + (y + 0.5)² = 3.25