Mathematics, 11.11.2020 18:10 krissy452
A Cepheid variable star is a star whose brightness alternately increases and decreases. Suppose that Cephei Joe is a star for which the interval between times of maximum brightness is 5.3 days. Its average brightness is 2.9 and the brightness changes by /- 0.35. Using this data, we can construct a mathematical model for the brightness of Cephei Joe at time t, where t is measured in days:.B(t)=4.2 +0.45sin(2pit/4.4)
(a) Find the rate of change of the brightness after t days.
(b) Find the rate of increase after one day.
Answers: 3
Mathematics, 20.06.2019 18:02
The average human heart beats 72 beats per minute. how many times does it beat in 15 seconds?
Answers: 1
Mathematics, 21.06.2019 17:00
You have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint? you have a 32-foot fence around a square garden. there are 4 equal sections. you paint 13 of one section of the fence. what fraction of the fence did you paint?
Answers: 2
Mathematics, 21.06.2019 21:00
Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)
Answers: 2
A Cepheid variable star is a star whose brightness alternately increases and decreases. Suppose that...
Mathematics, 08.10.2021 05:20
Social Studies, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30
Mathematics, 08.10.2021 05:30