Answer:
<u>8</u><u>t</u><u>h</u><u> </u><u>term</u><u> </u><u>is</u><u> </u><u>-</u><u>1</u><u>5</u><u>3</u><u>0</u><u>9</u>
Step-by-step explanation:

r is the common difference, r = -21/7 = -3
<u>Answer:</u>
- The solution of the expression is 19.
<u>Step-by-step explanation:</u>
<u>Given:</u>
<u>Work:</u>
- => 7 + q(r − 8)2
- => 7 + 3(10 - 8)2
- => 7 + 6(10 - 8)
- => 7 + 6(2)
- => 7 + 12
- => 19
Hence, <u>the solution of the expression is 19.</u>
Hoped this helped.

Answer:
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eeeeeeeeeeeeeeeeeeeeeeStep-by-step explanation:
Answer:
their sum: 2.8m
their difference: 1.2m
the third side's length should be smaller than their sum, larger than their difference
it could be: 1.3-1.4-1.5-1.6-1.7-1.8-1.9-2-2.1-2.2-2.3-2.4-2.5-2.6-2.7 but since it has to be a whole number, 2m is the only eligible answer.