In a predatory/prey model, the population of a predator is modeled by the function y=900cos(2π3x+8000y=900cos(2π3x+800 0

where x is measured in years. After how many years will the population reach 7,100?

you would have to sell 24 bracelets.

step-by-step explanation:

84/3.5 = 24

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.