Recall that


Adding these together, you have


Replace

with

and

with

. You end up with


and so

and

.
Answer: 
Step-by-step explanation:
We have two circles:
Cirlce 1, with a radius
and area
:

And Cicle 2, with a radius
and area
:

Since Circle 1 is inside Circle 2 and assuming the area of the shaded region is the shown in the attached image, its area is:



Finally:

The first one would reduce the size because it would now be 4/5 of the actual size
The scale factor 7/2 would enlarge it because it is getting 3 1/2 time larger than the oringanl size
Answer:
Step-by-step explanation:
The standard form of a linear equation, a line, is y = mx + b, where m is the slope. The rule is the higher this value of m, the steeper the graph is. If we have the original equation y = 3x + 1, its slope m is 3; in the "new" equation, y = x + 1, its slope is 1. So the "new" equation would be less steep because the slope is a lower value than the original.