Rearrange to
6ab+21b-8a-28 now factor 1st and 2nd pair of terms...
3b(2a+7)-4(2a+7)
(3b-4)(2a+7)
So it is the third one down...
The answers are - 3 and 5.
Translations, reflections, and rotations preserve congruency. Dilations do not?
<u>To prove the trigonometric equation:</u>


We know that
, substitute this in place of 1.

Multiply each term of the first term with each term of the 2nd term.

Group like terms together.



= LHS
RHS = LHS

Hence proved.
Answer:
x=48
Step-by-step explanation:
10x-20+6x+8=180 set the equations together and to equal 180 since a line is 180 degrees
Get the variables together
10x-20+6x+8=180
-6x -6x
4x-20+8=180
add together -20 and 8
4x-12=180
add -12 on each side
4x-12=180
+12 +12
4x=192
divide all by 4
x=48