Celia simplified the expression - 4x{1-+2). she checked her work by letting x-5 in both expressions. her work for the
original expression is shown below.

I think it is the last one

Step-by-step explanation: if you work it out, it equally 6x-2

6x-2

Step-by-step explanation:

When x=5 the value of the expression is 28

Now we check with each expression given in the options

Plug in 5 for x in each option

So 6x-2 gives us 28 when x=5

the image of (6, 9) under a dilation is (4, 6). the scale factor is

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2