Answer:
Option (b) is correct.

Step-by-step explanation:
Given: 
We have too choose the correct simplification for the given statement.
Consider 
Using property of exponents,
We have,

Again applying property of exponents 
We have,

Simplify, we have,

we get,

Thus, 
Option (b) is correct.
Y=9-2x, 9-2x=0, 2x=9, x=9/2, if you were asked to put it in standard form put down the first thing I said, if you were asked for solution then everything I said
Answer:
3 
Step-by-step explanation:
change 1
to an improper fraction
1
=
, thus
×
=
= 3
or 3.57 ( to 2 dec. places )
Answer:
113 degrees
Step-by-step explanation:
Two angles are called supplementary when they add up to 180 degrees

Answer:
70% = 
20% = 
Step-by-step explanation:
We know that x% is represented by the fraction
.
Now, in the first part, we are given two percentages 75% and 70%.
Now, 75% =
and 70% =
Therefore, the second option is correct.
Again, in the second part, we are given two percentages 20% and 25%.
Now, 20% =
and 25% =
Therefore, the third option is correct. (Answer)