X is Normal(5, 7).

Find E ( X ), Var ( X ), and SD( X ) for the given random variable


5, 49, 7

Mathematics

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Simplify the rate and write the result in words.

A. ; 37 hours for every 8 projects
B. ; 37 hours for every 9 projects
C. ; 37 projects for every 8 hours
D. ; 333 hours for every 37 projects

Mathematics

Write the statement as an inequality.y is greater than -15

A. y ? -15 B. y ? -15 C. y > -15 D. y < -15

Mathematics

Find the exact value of the expression using a sum, difference, or double-angle identity.tan  

A. 2 - 
B.  - 2
C. -2 - 
D. 2 + 

Mathematics

Rewrite the equation in a rotated x'y'-system without an x'y' term. Express the equation involving x' and y' in the standard form of a conic section.24xy - 7y2 + 36 = 0

A.  +   = 1
B.  -  = 1
C.  -  = 1
D.  -  = 1

Mathematics