Step-by-step explanation:
Algebra is math where you find the values of symbols, variables, etc. It is used to find the value of something you don't know.
Answer:
C. solution:
3(3c-2) = 5(2c-1)
or, 9c-6 = 10c-5
or, -6+5 =<em> </em>10c-9c
or, -1 = 1c
Hence, c = -1.
D. solution:
5(5-2a) = 4(6-a)
or, 25-10a = 24 - 4a
or, 25-24 = -4a+10a
or, 1 = 6a
or, 1/6 = a
Hence, a = 1/6.
I only know 9) and 10) sorry but here they are:
9) x=16 because ...
3x+20=5x-12
(-3x) (-3x)
20=2x-12
(+12) (+12)
32 = 2x
(32/2) (2x/2)
16=x
10) x=46
angles in quadrilaterals add to 360’
So you do ...
360-134-134-46= 46
This is all I know sorry. Hope you find some more help :)
Answer:
36
Step-by-step explanation:
Add all of the sides.
