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padilas [110]
3 years ago
9

Factor completely: 21a+27

Mathematics
1 answer:
Lina20 [59]3 years ago
8 0

Answer:

3(7a + 9)

Step-by-step explanation:

21a + 27

3(7a + 9)

When you expand

3 x 7a + 3 x 9

21a + 27

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Segments UV and WZ are parallel with line ST intersecting both at points Q and R respectively
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The <em><u>correct answer</u></em> is:

Corresponding (for both blanks)

Explanation:

Corresponding angles are angles that are in the same relative position to both the parallel line they are on and the transversal.  In this case, SQU and WRS are both above the parallel line they are on and on the same side of the transversal; this makes them corresponding angles.  This also means it is the corresponding angles postulate.

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2 years ago
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Answer:

Average rate of change of function is -2.

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