We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
51
3
avatar+673 

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+103148 
+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+103148 
+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+103148 
+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

23 Online Users

avatar