Determine the number of significant digits in the given approximate number.9000.4

A. 3
B. 4
C. 5
D. 2


Answer: C

Mathematics

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Evaluate the expression.-(54)

A. 625 B. -625

Mathematics

Solve.In a race, Car A starts 1 mile behind Car B. Car A is traveling at 45 miles per hour, while Car B is traveling at 40 miles per hour. How long will it take for Car A to overtake Car B?

A. 12 minutes
B.  minutes
C. 48 minutes
D. 8 minutes

Mathematics

Add or subtract.- - 

A. - 12
B. - 10
C. 12
D. - 12

Mathematics

Find the exact value without using a calculator. cot ?

A. 1 B. undefined C. -1 D. 0

Mathematics