If every single student met one an another, then you would hear 90 hi's. Since there are 45 different combinations of 2 students meeting another, and since there are 2 hi's each meeting, there would be 90.
I hope that this helps.
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The answer would be x= 68 degrees
1.50x + 10[x/30] >= 450
x >= 246.3
check:
1.50*246 + 10*8 = 449
His next sale will push him over $450
Answer:
The midpoint of Line Segment AB = (-0.5, 0)
Step-by-step explanation:
<u><em>Given data:</em></u>
Point A: (-2, 1)
Point B: (1, -1)
<u><em>Use the midpoint formula:</em></u>
<u><em></em></u>
<u><em>Solve:</em></u>
-2 + 1 / 2 ; 1 + -1 / 2
-1/2 ; 0/2
Answer: (-0.5, 0)
<em>hope this helps and is right! p.s. i really need brainliest :)</em>
<em></em>
Answer:
C. (2, 6] hour jobs cost $100
Step-by-step explanation:
Let's consider each of these statements in view of the graph:
- A cleaning time of 2 hours will cost $100. -- The closed circle at (2, 50) tells you the cost of a 2-hour job is $50, not $100.
- A cleaning time of 6 hours will cost $150. -- The closed circle at (6, 100) tells you the cost of a 6-hour job is $100, not $150.
- Cost is a fixed rate of $100 for jobs requiring more than 2 hours, up to a maximum of 6 hours. -- The line between the open circle at (2, 100) and the closed circle at (6, 100) tells you this is TRUE.
- Cost is a fixed rate of $200 for jobs that require at least 6 hours. -- "At least 6 hours" means "greater than or equal to 6 hours." The closed circle at (6, 100) means a 6-hour job is $100, not $200.
