A shooter has 7 bullets. What is his expectation of hits if the probability of hit of each shoot is 0.4?

a.  2.8
b.  5.6
c.  17.5
d.  2


a.  2.8

Mathematics

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Solve.Consider the formula T = 591 - 76 cos 2?, where ? is measured in degrees. To the nearest hundredth of a degree, what is the smallest positive value of ? for which the value of T will be 556?

A. 65.58° B. 28.29° C. 62.58° D. 31.29°

Mathematics

Insert <, >, or = to make the statement true.17    -17

A. = B. > C. <

Mathematics

Solve the problem.Don James wants to invest $65,000 to earn $5050 per year. He can invest in  bonds paying  per year or in a Certificate of Deposit (CD) paying  per year. How much money should be invested in each to realize exactly $5050 in interest per year?

A. $35,000 in B-rated bonds and $30,000 in a CD B. $36,000 in B-rated bonds and $29,000 in a CD C. $29,000 in B-rated bonds and $36,000 in a CD D. $30,000 in B-rated bonds and $35,000 in a CD

Mathematics

Determine where the given function is increasing and where it is decreasing. f(x) = x3 - 5x4

A. Decreasing on , increasing on 
B. Increasing on , decreasing on 
C. Decreasing on   and , increasing on  and  
D. Increasing on   and , decreasing on  and  

Mathematics