Answer:
23/56 centimeters
Step-by-step explanation:
all of the variables have a common denominator, so you can effectively ignore the denominator when solving.
1. you start off with 34/56 centimeter of chalk and Brian breaks off 23/56 centimeters worth, leaving you with 11/56 centimeters

2. Sara then added 12/56 centimeters worth, making the final amount 23/56 centimeters of chalk

An equation to summarize all of this is:

Answer:
negative 2.3
Step-by-step explanation:
Answer:
B. a ⊥ d
Step-by-step explanation:
If lines "a" and "d" are in the same plane, they are perpendicular to each other. If not, there is no relationship between the lines.
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Lines parallel to the same line are parallel to each other, so a║c. <em>In the same plane</em>, a line perpendicular to one of two parallel lines is also perpendicular to the other. (For example, one side of a rectangle is perpendicular to both of the adjacent sides, which are parallel to each other.)
The appropriate choice is ...
a ⊥ d
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<em>In 3 dimensions, ...</em>
Consider a cube. A given edge will be perpendicular to both of the two edges it meets at a corner.
It will not intersect (has no "perpendicular" relationship to) either of the edges parallel to those that meet at the corner at the other end of the space diagonal.
Answer:
- 3
Step-by-step explanation:
