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KATRIN_1 [288]
3 years ago
7

Jen solves the equation 100-1/2x=92 to determine the number of questions, x, she answered incorrectly on a test. She began by su

btracting 100 from both sides, then multiplying both sides by -2. Which best describes the accuracy of jen’s work?
Mathematics
2 answers:
vazorg [7]3 years ago
4 0

Answer:

subtracting 100 from both sides

Step-by-step explanation:

100-1/2x=92

Elis [28]3 years ago
4 0

Answer:

the answer is subtract 100 from both sides

Step-by-step explanation:

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What is the 100th term if the sequence? 5 ,1 ,-3,-7
wel
<span>5 ,1 ,-3,-7  ?  what the dickens is going on?

notice, from 5 to 1, is really -4 units,

from 1 to -3, is -4 units as well, 1 -4 = -3  and so on.

so, to get the next term's value, you simply subtract 4 from the current one, namely -4 is the "common difference".

and we also know the first term is 5, ok... then

</span>\bf n^{th}\textit{ term of an arithmetic sequence}\\\\&#10;a_n=a_1+(n-1)d\qquad &#10;\begin{cases}&#10;n=n^{th}\ term\\&#10;a_1=\textit{first term's value}\\&#10;d=\textit{common difference}\\&#10;----------\\&#10;d=-4\\&#10;a_1=5\\&#10;n=100&#10;\end{cases}&#10;\\\\\\&#10;a_{100}=5+(100-1)(-4)\implies a_{100}=5+(99)(-4)&#10;\\\\\\&#10;a_{100}=5-396\implies a_{100}=-391<span>
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