Answer: He made $612 for sold 204 erasers this week.
Step-by-step explanation:
The volume of a sphere is
(4/3 π) x (radius)³ .
Right there, we can see that the volume of a sphere is proportional to
the cube of its radius, and the ratio of the volumes of two spheres is
the same as the cube of the ratio of their radii.
The ratio of the radii is (6,371 / 1,161) = 5.4875... (rounded) .
So the ratio of their volumes is (6,371 / 1,161)³ = (5.4875)³ = 165.24 .
Words cannot express our boundless joy when we look up
at the list of choices and see that 165 is one of them.
20x + 5y = 15
-20x -20x
5y = -20x + 15
/5 /5 /5
y = -4x + 3
Answer:
The third one
Step-by-step explanation:
The x value repeats.
Answer:
y=112
x=68
Step-by-step explanation:
Since x had to be 44 less than y, I divided y by 2 to get 22. Then, I added 2 to get 24 because the ones have to be the same. Next, I added 24 with 44 to get 68, which is x. Then I added 68 with 44 to get 112, which is y.
Then, to check my work, I added 68 and 112 and got 180, which is the angle of a straight line.