Answer:
y = 48
Step-by-step explanation:
given y is directly proportional to x then the equation connecting them is
y = kx ← k is the constant of proportionality
To find k use the condition y = 36 when x = 30
k = 
= 
= 
y = x ← equation of proportionality
When x = 40 then
y = × 40 = 48
Answer:
Chuck travels as 63mph
Step-by-step explanation:
Answer:
9+12y
Step-by-step explanation:
3x3+3x4y
Area of base = 1/2 x 4 x 3.5 = 7 m²
Perimeter of the base = 4 + 4 + 4 = 12 m
Surface area = 7 + 7 + 12 x 11 = 146 m²
Answer: 146 m²
Barry = 92
heidi = h
92 = h + 18
92 - 18 = h + 18 - 18
74 = h
heidi has 74 marbles
