Answer:
y = -2
Step-by-step explanation:
The line x = -3 is a vertical one; the slope of a line perpendicular to x = -3 is zero (0). Recall that the slope of a vertical line is undefined and that of a line perpendicular to a vertical line is 0.
Then, to write the equation of the perpendicular line, we borrow the '-2' from (-9, -2) and write y = -2. This line does indeed pass through (-9, -2) and every other point whose y-component is -2.
9n - 7 = 5n + 5 |add 7 to both sides
9n = 5n + 12 |subtract 5n from both sides
4n = 12 |divide both sides by 4
n = 3
Answer:
199.5
Step-by-step explanation:
<em>distributed =2/3 on left side</em>
-20x + 5 ≤ 3x - 15
<u> -3x </u> <u>-3x </u>
-23x + 5 ≤ -15
<u> -5</u> <u> -5 </u>
-23x ≤ -20
x ≥ <em>divided by a negative so the symbol reversed </em>
******************************************************
2x² + 2 = 3x
2x² - 3x + 2 = 0
2x² - 3x = -2
2(x² - + __) = -2 + (2)(___)
2(x² - ) = -2 +
2(x - )² = -2 +
2(x - )² = -2 +
2(x - )² = -2 +
2(x - )² = +
2(x - )² =
(x - )² =
x - = +/-
x - = +/-
x = + , x = -
x = , x =