Which expression is equivalent to \dfrac{3+\dfrac{3}{a}}{\dfrac{3}{a} } a
3
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3+
a
3
​

​
start fraction, 3, plus, start fraction, 3, divided by, a, end fraction, divided by, start fraction, 3, divided by, a, end fraction, end fraction ?
Assume a\neq 0a

​
=0a, does not equal, 0.
A: a + 1
B: a
C: 2
D: 1/2

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm

Will give a: 122 b: 90 c: 48 d: 180

Statement reason 1. δabc is similar to δced. given 2. 3. definition of slope 4. slope of slope of definition of slope 5. slope of × slope of multiplying the slopes 6. slope of × slope of substitution property of equality 7. slope of × slope of simplifying the right side the table contains the proof of the relationship between the slopes of two perpendicular lines. what is the reason for statement 2? a. parallel line segments that meet a common perpendicular line are proportional in length. b. the lengths of vertical and horizontal sides in congruent triangles are in a common ratio. c. trigonometric identities determine the lengths of the legs in a right triangle. d. corresponding side lengths in similar triangles are proportional in length.