Answer: last one
Step-by-step explanation:
Answer:
Step-by-step explanation:
h(x)=ax^2
Given h=30 when x=150 we get
a(150)^2=30
a=30/22500=1/750 so
h(x)=x^2/750
Answer: 600*78= 46,800
Step-by-step explanation:
This is the concept of proportionality, given that z is directly proportional to x and inversely proportional to y then:
zαx/y
z=(kx)/y
where;
k is the constant of proportionality given by:
k=zy/x
but when x=3 and =6 then z=9.5
therefore:
k=(9.5*6)/3
k=19
hence the formula for z will be:
z=(19x)/y
the value of z when x=8 and y=12 will be:
z=(19*8)/12
z=12 2/3
