Answer:
cheese=$7
sausage=$5
Step-by-step explanation:
let the cost of a pound cheese be x
that of sausage=x-$2
3x+3(x-2)=3x+3x-6
6x-6=36
6x=36+6
6x=42
x=7
Answer:
Step-by-step explanation:
N
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:
15tan 30
Step-by-step explanation:15 tan30°
Remember SOHCAHTOA.
tanθ =
opposite
adjacent
tan30° =
x
15
x = 15 tan30°