Answer:
see explanation
Step-by-step explanation:
x + y = 90 → (1) ( complementary angles )
x + z = 180 → (2) ( supplementary angles ) and
z = 3x - 8 ( 8 less than 3 times x ), substituting in (2)
x + 3x - 8 = 180
4x - 8 = 180 ( add 8 to both sides )
4x = 188 ( divide both sides by 4 )
x = 47
Substitute x = 47 into (1)
47 + y = 90 ( subtract 47 from both sides )
y = 43
and z = 3x - 8 = 3(47) - 8 = 141 - 8 = 133
Thus
x = 47°, y = 43° and z = 133°
Answer:
Step-by-step explanation:
The given quadratic expression is
3x² - 9x + 6
Dividing each term in the expression by 3 in order to simplify it further, it becomes
x² - 3x + 2 = 0
We would determine two numbers such that their sum or difference is -3x and their product is 2x².
The two numbers are - 2x and - x.
Therefore,
x² - 2x - x + 2
x(x - 2) - 1(x - 2)
(x - 1)(x - 2)
When the expression is factored completely, it is equivalent to
(x - 1)(x - 2)
1 is the only number that won't duplicate a value.
Answer:
It’s the first one trust me
Step-by-step explanation:
180=(12x+8)+(8x+12)
180=20+20x
-20. -20
160=20x
20. 20
X=8
B)8