b - the base
h = b + 3 - the height
The formula of an area of a triangle:
Substitute:
Answer:
The height of water in the cylinder after drooping 8 marbles is 12 mm
Step-by-step explanation:
∵ The change of the height of the water varies directly with the change of the number of marbles
∵ (h2 - h1) α (x2 - x1)
∴ (h2 - h1) = k (x2 - x1)
∴ (11 - 10) = k (6 - 4)
∴ 1 = 2 k
∴ k = 1/2
∴ (h2 - h1) = 1/2 (x2 - x1)
∴ (Δh) = 1/2 (Δx)
∴ h3 - 11 = 1/2 (8 - 6)
∴ h3 = 1/2 × 2 + 11 = 12 milliliter
Answer: use an algbra caclulater
Step-by-step explanation:
Im pretty sure 20 is the anwser