A jeweler has three small solid spheres made of gold, of radius 1 mm, 2 mm, and 3 mm. He decides to melt these down and make just one sphere out of them. What will the radius of this larger sphere be? Round the answer to one decimal place.
(a) 4.5mm
(b) 3.5mm
(c) 5.0mm
(d) 6.0mm
(e) none of these
(e) none of these
Mathematics
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Perform the indicated operations.(4m - 13w)(4m + 13w)
A. 16m2 - 104mw - 169w2 B. 16m2+ 104mw - 169w2 C. 4m2 - 13w2 D. 16m2 - 169w2
Mathematics
Write an inequality with the same meaning.y > 3
A. y ? 3 B. 3 < y C. y < 3 D. 3 > y
Mathematics
Perform the indicated operations.(1.8x3 + 7.5x2 + 4.9) + (6.9x - 2.4) - (3.8x2 -x - 9.3)
A. 1.8x3 + 3.7x2 + 6.9x + 11.8 B. 1.8x3 + 11.3x2 + 5.9x - 6.8 C. 13.4x6 + 11.8 D. 1.8x3 + 3.7x2 + 7.9x + 11.8
Mathematics
Solve the problem.The Smith family is planning a 385-mile trip. If they travel at an average speed of 35 miles per hour, what will be their travel time? (Use d = rt)
A. 13 hr. B. 11 hr. C. 10 hr. D. 12 hr.
Mathematics