Step-by-step explanation:
x1 = -5, x2 =3 , y1 = -4 , y2=1
- formula = square foot of (x2 -x1)^2 + (y2 -y1)^2
- sqare root of (3 +5)^2 + (1 +4)^2
- square root of (8)^2 + (5)^2
- square root of 64 + 25
- square root of 89
- = 9.43
3. 8(3+8)
Explanation : 8x3 = 24 + 8x8 =64 which is congruent to 24 +64
Answer:

Step-by-step explanation:
Standard equation of a line is y = mx + b, where m is the slope.
Given line y = - 3x + 78, slope, m₁ = -3
<em><u>To find the line perpendicular to the given line.</u></em>
The lines are perpendicular to each other if the product of their slopes = - 1
That is,

So the slope of new line is


Answer:
1st one: -24a-6b-36c
2nd one: 14mn-12m
Step-by-step explanation:
1st one: Multiply '-6' w/ '4a', 'b', and '6c'
2nd one: Multiply '2m' w/ '7n' and '-6'