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blsea [12.9K]
3 years ago
10

Which number is NOT in the solution set of x − 9 > 3? A) 11 B) 13 C) 15 D) 17

Mathematics
2 answers:
densk [106]3 years ago
7 0

Answer:

A

Step-by-step explanation:

Given

x - 9 > 3 ( add 9 to both sides )

x > 12

13, 15 and 17 are all greater than 12

However, 11 is less than 12 and is not in the solution set → A

Vesna [10]3 years ago
3 0

Answer:

A) 11.

Step-by-step explanation:

x − 9 > 3     Add 9 to both sides:

x > 3 + 9

x > 12.

The only number in the list that is not greater than 12 is 11.

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Describe the relationship between the terms in each arithmetic sequence. Then write the next three terms in each sequence.
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Answer:

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3 years ago
Can someone help me please
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3 years ago
Identify the examples as primary sources or secondary sources.
algol13

Answer:

Primary : letters, artifacts, contracts

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5 0
3 years ago
Evaluate the expression Arcsec(sqrt 2). Do not use your calculator to answer this question. Do not express answer in decimals.
Igoryamba
Pi/4 radians  
You're looking for the angle that has a secant of sqrt(2). And since the secant is simply the reciprocal of the cosine, let's take a look at that.
 sqrt(2) = 1/x
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 Let's multiply both numerator and denominator by sqrt(2), so
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 And the value sqrt(2)/2 should be immediately obvious to you as a trig identity. Namely, that's the cosine of a 45 degree angle. Now for the issue of how to actually give you your answer. There's no need for decimals to express 45 degrees, so that caveat in the question doesn't make any sense unless you're measuring angles in radians. So let's convert 45 degrees to radians. A full circle has 360 degrees, or 2*pi radians. So:
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5 0
3 years ago
Read 2 more answers
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