Solve the matrix equation for X.Let A = 
and B = 
;
X + A = B
A.
X = 
B.
X = 
C.
X = 
D.
X = 
Answer: D
Mathematics
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Write the expression in the standard form a + bi.(6 + 5i)(6 - 5i)
A. 36 - 25i B. 61 C. 36 - 25i2 D. 11
Mathematics
250 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with mean ? = 75 and standard deviation ? = 10.Peter's score on the exam places him in the 16th percentile of the class. Peter's score on the exam is approximately
A. 55. B. 45. C. 16. D. 65. E. none of these
Mathematics
Find an equation for the ellipse described.Vertices at (-7, 5) and (-1, 5); focus at (-6, 5)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics
Simplify the expression, writing the answer as a single term without negative exponents.(-9a-1 - 3b-1)-1
A. 
B. 
C. 
D. 
Mathematics