Answer:
-7 degrees
Step-by-step explanation:
9am: 5 degrees(current temperature)
10am: 5-4=1 degrees(first hour)
11am: 1-4=-3 degrees(2nd hour)
12pm: -3-4= -7 degrees(3rd hour)
The symbol "<=" without quotes means "less than or equal to"
-6x + 2y <= 42
-6x + 2y + 6x <= 42 + 6x ... Add 6x to both sides
2y <= 6x + 42
2y/2 <= 6x/2 + 42/2 ... divide every term by 2
y <= 3x + 21
So the answer is choice D
Answer:
c) three
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Step-by-step:
The tetrahedron is a triangular pyramid with equilateral triangles on each face.
I think the answer is x=60
