Answer:
1. 
2. 13.5 + 
3. 
6. 
These four options are rational;
Step-by-step explanation:
1.
equals to 10 * 10 = 100 which is rational
2. 13.5 +
equals 13.5 + 9 = 22.5
3.
-- 3+27 = 30
6. 
Option 4 and 5 are irrational because they include
and
which are not a perfect square and their answers will be non recurring and non terminating decimal fraction.
Answer:
5x - 9
Step-by-step explanation:
The area of the rectangle is:
(1)
The area of the rectangle is the product of length (L) and width (W):

where
, and the width must be in the form
.
We need to find the values of a and b. If we calculate the product of L and W, we get:

We know that this equation must be equivalent to (1), so we immediately see that:
- the coefficient of the second order term,
, must be 35, so

- the zero-order term must be equal to -18, so we have

- We can verify that using a=5 and b=-9, the coefficient of the first-order term corresponds to -53:

So, the width is
W = 5x - 9
Slope-intercept form is y=mx+b
m is slope and b is y-intercept.
So, if you have -5x-3y=3
Make it into y=something
So, -3y=3+5x
y= -3/3 + 5/-3 x
y= -1 - 5/3 x
Same as the first one in your pic.
Triangle congruence theorem