+0  
 
0
310
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avatar+1728 

{1, 1, 1, 1, 1, 1, 1, 1, 1, n}

 

The mean of this set of numbers is 10. What is the value of n?

 

A) 1

B) 9

C) 11

D) 19

E) 91

 Aug 28, 2019
 #1
avatar+111438 
+2

[ 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + n]

___________________________________   =  10         

              10 

 

Multiply both sides by 10  an simplify

 

9 + n   = 100     subtract 9 from both sides

 

n  = 91

 

cool cool cool

 Aug 28, 2019
 #2
avatar+1728 
0

Which statement MUST be true given that a is positive and b, c, and d are all positive integers, and a < 1 < b < c < d.

 

A) 1/a > b

 

B) b - d > c - d

 

C) c + 1/a < d + 1/a

 

D) a > 1/d

 

E) c < a

macabresubwoofer  Aug 28, 2019
 #3
avatar+1728 
0

Line L has equation y = 4x - 7, and line M is parallel to line L and passes through the point (2, 15). Determine the equation of line M.

 

A) y = 4x + 7

B) y = 2x + 7

C) y = 4x + 15

D) y = 2x + 15

E) y = - 1/4x + 7

 

 

 

 

Rectangle EFGH has the coordinates

 

E (-3, -1) 

F (-3, 3) 

G (-1, 3)

 

Find the coordinates of point H.

 

A) (-1, 0)

B) (-1, 1)

C) (1, -1)

D) (-1, -1)

E) (0, -1)

macabresubwoofer  Aug 28, 2019

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