Find the distance between P and Q.P(r, t), Q(t, r)

A. 2
B.
C.
D. 2


Answer: B

Mathematics

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Using the Divergence Theorem, find the outward flux of F across the boundary of the region D.F = sin yi + xzj + 5zk ; D: the thick sphere 4 ? x2 + y2 + z2 ? 9

A. 135?
B. 380?
C. ?
D. ?

Mathematics

Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 51 million cars in a certain country, increasing by 5% annually. How many years will it take for this country to have 62 million cars? Round to the nearest year.

A. 4 yr B. 2 yr C. 48 yr D. 3 yr

Mathematics

Find an approximation of the sum of the series accurate to two decimal places.

Mathematics

Find the product.12a2x8(-4a7x9 - 3x5 - 8a)

A. 48a9x17 + 36a2x13 + 96a3x8 B. -48a9x17 - 3x5 - 8a C. -48a14x72 + 36a2x40 + 96a2x8 D. -48a9x17 - 36a2x13 - 96a3x8

Mathematics