? dx

What will be an ideal response?


x +C

Mathematics

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Find the exact value of the expression.cos  cos  - sin  sin 

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

Mathematics

Solve the problem.Use the formula R = log, where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. An earthquake was recorded which was 2,511,886 times more powerful than a reference level zero earthquake. What is the magnitude of this earthquake? (Round to the nearest tenth.)

A. 6.4 B. 5.4 C. 14.7 D. 0.6

Mathematics

A geometric sequence is given. Find the common ratio and write out the first four terms.{tn} = 

A. r = ; t1 = , t2 = , t3 = , t4 = 
B. r = n; t1 = , t2 = , t3 = , t4 = 
C. r = ; t1 = , t2 = , t3 = , t4 =  
D. r = n; t1 = , t2 = , t3 = , t4 = 

Mathematics

Use a calculator to find the following. Round your answer to four places past the decimal point. ?  sec 47.9° ? 

A. 1.5806 B. 1.4246 C. 1.4916 D. 1.6366 E. 1.3686

Mathematics