z = f (x, y) = y2/ x; a = 9, b = 3, x = 2.71, y = 4.05

For the following functions, use linearization and the values of z, at (a b) to estimate z (x, y) .


2.399

Mathematics

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Perform the indicated operations, expressing the answer in simplest form with rationalized denominators. 

A.
B. 22
C.
D. 44

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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (7 cos t)i + (6 sin t)j

A. a = (-7 cos t)i + (-6 sin t)j B. a  = (-7 sin t)i + (-6 cos t)j C. a  = (7 sin t)i + (6 cos t)j D. a = (7 cos t)i + (6 sin t)j

Mathematics

Solve the problem.The driver of a car traveling at 42 ft/sec suddenly applies the brakes. The position of the car is  t seconds after the driver applies the brakes. How far does the car go before coming to a stop?

A. 588 ft B. 294 ft C. 7 ft D. 147 ft

Mathematics

Simplify. ÷ 

A.
B.
C.
D.

Mathematics