Answer:Answer:
8
Step-by-step explanation:
10(8) + 20 = 120
15 (8) = 120
Answer:
h = 12 cm
Step-by-step explanation:
Use the formula for area of a triangle A = (1/2)bh, where b is the base, and h is the height.
Plug in the given information of A = 36, and b = 6, then solve for h
36 = (1/2)(6)h
36 = 3h (one half of 6 is 3 (1/2)(6) = 3 )
12 = h (divide both sides by 3 to isolate h)
Answer:
parallel
Step-by-step explanation:
Parallel lines have equal slopes.
Calculate the slopes m using the slope formula
m = 
with (x₁, y₁ ) = (- 1, 2) and (x₂, y₂ ) = (2, 3)
m =
= 
Repeat with (x₁, y₁ ) = (0, 0) and (x₂, y₂ ) = (3, 1)
m =
=
Since slopes are equal then parallel
Answer:
B. 21.2
Step-by-step explanation:
Perimeter of ∆ABC = AB + BC + AC
A(-4, 1)
B(-2, 3)
C(3, -4)
✔️Distance between A(-4, 1) and B(-2, 3):




AB = 4 units
✔️Distance between B(-2, 3) and C(3, -4):




BC = 8.6 units (nearest tenth)
✔️Distance between A(-4, 1) and C(3, -4):




AC = 8.6 units (nearest tenth)
Perimeter of ∆ABC = 4 + 8.6 + 8.6 = 21.2 units