Answer:
Any number less than 4 (3 or less)
Step-by-step explanation:
Note that it is a less than sign (<) and not a less than or equal too sign. This means that the answer choices does not include 4. Any number less than 4 is your answer, (for example: 3, 2, 1, 0, -1, -2, etc.)
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Answer: -5 < x < 6. (-5, 6)
Step-by-step explanation:
Answer:
510 divided by 3= 170 170x4= number of students
Answer:
1. 180
2. x = 31
Step-by-step explanation:
1. the sum of the interior angles of every triangle is always 180
2. using what we know from problem 1, we can create an equation:
x + 10 + 2x - 5 + 2x + 20 = 180
add like terms: 5x + 25 = 180
subtract 25 from both sides: 5x = 155
divide both sides by 5: x = 31