If 4/5 do, then 1/5 dont
1/5=x/100
x=20
20%
Answer:
X1= -2 X2=6
Step-by-step explanation:
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:
A≈149.84
Step-by-step explanation:
A=a2+2aa2
4+h2=62+2·6·62
4+92≈149.842
The ratio of length to width would change slightly, before adding on to the dimensions, the ratio is 6 : 2.5 with the added dimensions, the ratio would change to 8 : 4.5 with simple math you can see that 2.5 is less then half of 6 while 4.5 is more then half of 8