The exponents distribute over factors:

so, you have

Let's focus on each factor: applying the definition of negative exponents, you have

While for the power of 10, you can use the following rule
to write

So, the expression evaluates to

Answer:
x=14
Step-by-step explanation:
This is asking for the ratio of A to B.
The x-10 is 1.
The 28 is 7.
Find the scale factor by executing 28/7=4.
So, you would want polygon A to be 4 in order to be proportional to polygon B.
Now, you can just guess and check that 14-10=4
Or, you can set up the equation as follows: x-10 = 4
+10 +10
x = 14 is your answer.
Answer:
slope = 1
Step-by-step explanation:
calculate the slope m using the slope formula
m = 
with (x₁, y₁ ) = (3, 9 ) and (x₂, y₂ ) = (- 4, 2 )
m =
=
= 1
Answer:
236.25 
Step-by-step explanation:
To get the area of the shaded portion, add up all the areas of the 3 quadrants
First, find the area of one quadrant
Area of a quadrant = 1/4 π
π = 3.14
Radius, r = 10 cm
A = 1/4 *3.14 * 
A = 1/4 *3.14 * 100
A = 1/4 *314 
A = 78.75 
Now, multiply by 3
3 * 78.75
= 236.25 
Jake sells 153,
Sara sold 76.
Cole sells 306.
538-153-76=309