Can someone please answer this question please I need it today please answer it correctly and please show work please answer numbers 7and22

7)  B

22) B

Step-by-step explanation:

7)    -4n

The expression must have a negative value

Use three types of examples for n

-4(-1)        -4(0)          -4(1)

 4               0              -4  

Only one of these examples results in a negative number, 1.

1 > 0

Substitute n back into the inequality

n > 0              B

22)   Use two numbers greater than 0 to represent m and n

ex.) m = 1    n = 2

= = -0.5

-0.5 is a rational, negative number.   B

Hope this helps :)

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

32/80  

91/140

the last one 54 doesn't go into 45. 54/100 ?

step-by-step explanation: