Answer:
Option B
Step-by-step explanation:
The slope of the line BC is,


Since AD is altitude to BC, we can say AD is perpendicular to BC, so the slope of the line AD which is perpendicular line to BC will be,

Answer:
1/20
Step-by-step explanation:
multiply 3/4 by 10 and multiply 7/10 by 4 then subtract fractions
30/40 - 28/40 = 2/40 divide it by 2 so we get the simplest form.
9/12 is the answer to your question
Simplifying
2x + -3(3 * 0.6x + 2.7)
Multiply 3 * 0.6
2x + -3(1.8x + 2.7)
Reorder the terms:
2x + -3(2.7 + 1.8x)
2x + (2.7 * -3 + 1.8x * -3)
2x + (-8.1 + -5.4x)
Reorder the terms:
-8.1 + 2x + -5.4x
Combine like terms: 2x + -5.4x = -3.4x
-8.1 + -3.4x