Answer:
Not sure exactly which equivalent expression you are looking for but my goal would be to write it without the negative exponent.
Step-by-step explanation:
They have the same exponent and it is multiplication.
There is a law of exponent that says 
.
So we have 
equals 
.
Let's simplify (4*7)^(-2).
Since 4*7=28, we can say 
.
Some people really hate that negative exponent. All that - in the exponent means is reciprocal. So 
.
Answer:
b = 10
Step-by-step explanation:
In this question we have identified that b ( or short leg ) = 5 brainly.com/question/23589050
In the image provided in that question the, we are told that the hypotenuse = short leg times 2
If we have identified that the short leg = 5 then the hypotenuse = 5 * 2 which is equal to 10
We can put this information into two equations:
7 booklets = 140 stamps
3 booklets = 60 stamps
Let us then focus on one equation to find the relationship:
7 booklets = 140 stamps
If we put that into a fraction, we get
or
.
This means that for every booklet, Ashley gets 20 stamps; or rather, each booklet has 20 stamps.
We can then see that this relationship holds true for the second equation as well:
or
.
To write a general equation for this relationship using
p for the number of postage stamps, and
b for the number of booklets:
p = 20b
Where
b is equal to
p.
The rational number would be 16
Formula: y = mx + b
m being the slope
Slope given: -2, plug it in
Y = -2x + b
Now find y intercept (b)
Plug in the point (5,-11)
-11 = -2(5) + b
-11 = -10 + b, b = -1
Solution: y = -2x -1
