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avatar+1715 

If m = 5 and n = -2, evaluate 3m - 4n and n^2 - m and find the product of the two expressions.

 

A) -198

B) -63

C) -23

D) -9

E) -7

 

 

 

 

 

 

Which statement MUST be true given that a, b, c, and d are all integers, and a < 0 < b < c < d?

 

A) 1/a > b

B) b - a > c - a

C) -a < c

D) a > -d

E) c + a < d + a

 

 

 

 

 

 

 

-3 3/4, -3 13/20,-3 -17/25, -3 3/5

 

Write the fractions in order from least to greatest.

 

A)    -3 3/4, -3 3/5, -3 13/20, -3 17/25

 

B)    -3 3/5, -3 17/25, -3 13/20, -3 3/4

 

C) -3 3/5, -3 13/20, -3 17/25, -3 3/4

 

D) -3 3/4, -3 3/5, -3 13/20, -3 17/25

 

E) -3 3/4, -3 17/25, -3 13/20, -3 3/5

 Aug 28, 2019
 #1
avatar+111394 
+3

If m = 5 and n = -2, evaluate 3m - 4n and n^2 - m and find the product of the two expressions.

 

[ 3(5) - 4(-2)]  *  [ (-2)^2  - 5 ]  =

 

[15 + 8 ] *  [ 4 - 5 ]  =

 

[23] * [ -1]  =

 

-23

 

 

cool cool cool

 Aug 28, 2019
 #2
avatar+111394 
+3

Which statement MUST be true given that a, b, c, and d are all integers, and a < 0 < b < c < d?

 

 

1/a  > b     1/a  is negatve   b is positive    so.....   false

 

b - a > c  - a      add  a to both sides   b > c      so......      false

 

-a > c           not necessarily true   ....if a  = -1   and c = 5.......this is false

 

a > - d       if a  = -1    and d  = 1/2  then   -1 > -1/2  ???   false

 

c + a < d + a     subtract a from both sides   c < d     which is true

 

 

cool cool cool

 Aug 28, 2019
 #3
avatar+111394 
+3

Last one

 

-3 3/4, -3 13/20,-3 -17/25, -3 3/5

 

-3 75/100     -3 65/100    -3  68/100     -3 60/100

 

-3.75     -3.65    - 3.68     -3.60

 

Least to greatest

 

-3.75          -3.68         - 3.65         -3.60   

   

-3  3/4     -3  17/25    -3  13/20     -3  3/5

 

 

 

cool cool cool

 Aug 28, 2019

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