Angle sum of a triangle = 180°
Therefore:
Equation No. 1 -
2 ( 2x - 4 ) + 5y = 180°
2 ( 2x - 4 ) + 5 [ ( 2x - 4 ) / 5 ] = 180
4x - 8 + [ 5 ( 2x - 4 ) / 5 ] = 180
4x - 8 + 2x - 4 = 180
4x + 2x = 180 + 8 + 4
6x = 192
x = 192 / 6
x = 32°
Equation No. 2 -
5y = 2x - 4
y = ( 2x - 4 ) / 5
ANSWER:
x = 32°
I use the acronym
Giga-Gosh
Mega-Molly
Kilo-Kathryn
Hecto-Hates
Deca-Dad
deci-dad
centi-can't
mili-multiply
micro-many
nano-numbers
I hope this helps, please let me know if you have any other questions or need any other help! Thank you! :)
Answer
-8/3 (fraction)
or in decimal form it would be -2.6 (the six would be repeating)
Step-by-step explanation:
An = -4 + (n - 1)(7)
This being in the form of the explicit rule for an arithmetic sequence you can pick out the d and a1.
an = a1 + (n - 1)(d)
d = 7
a1 = -4
