Precalc solve the solution set

210° , 270°

Step-by-step explanation:

6+6sinθ = 4cos²θ = 4 (1-sin²θ) = 4 - 4 sin²θ

4 sin²θ + 6 sinθ + 2 = 2(2 sin²θ + 3 sinθ + 1) = 0

2* (sinθ + 1) (2sinθ + 1) = 0

sinθ = -1   or sinθ = -1/2

θ = 270°   or θ = 210°

we'll this would mean that the dunk tank and the bounce house are the same for 20 hours because the 2 represents that the two activities, and the 20 represents the amount of hours they both are. so with this said, it means that the answer is c. the costs for a dunk tank and bounce house are the same for 20 hours.

c.the costs for a dunk tank and bounce house are the same for 20 hours.

hope this .

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies