Four pounds of apples cost $5. eight pounds of apples cost $10. if the total cost of apples, y, varies directly with the number
2 answers:
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Answer:
(b) Radius of the sphere = 5 units.
Step-by-step explanation:
Here, given:
The volume of the sphere = cubic units ... (1)
Also, radius of the sphere = x units
Now, VOLUME OF SPHERE =
So, volume of a sphere with radius x =
But volume of sphere is given by (1).
Hence, radius of the sphere = 5 units.
Answer:
6.31 mi
Step-by-step explanation:
The diagram below explains the solution better.
From the diagram,
C = starting point of the race.
A = end of the first part of the race.
B = end of the race.
Using Cosine rule, we can find the straight-line distance between the starting point and the end of the race.
Cosine rule states that:
where A = angle A = <A
Given that
b = 5.2 miles
c = 2.0 miles
<A = 115° (from the diagram)
Hence,
The straight-line distance between the starting point and the end of the race is 6.31 mi
The x-coordinate of the axis os symmetry of a quadratic is the x-coorfinate of its vertex. To find the y-coordinate of the vertex here we would substitute -5 for x in:
The coordinates of the vertex are (-5,41)
The coordinates of the vertex are (-5,41)