In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled approximately by a trigonometric function. The lowest temperature is usually around 3^\circ C3 ∘ C3, degrees, C, and the highest temperature is around 18^\circ C18 ∘ C18, degrees, C. The temperature is typically halfway between the daily high and daily low at both 10\text{ a. M.}10 a. M.10, start text, space, a, point, m, point, end text and 10\text{ p. M.}10 p. M.10, start text, space, p, point, m, point, end text, and the highest temperatures are in the afternoon.

The answer is ""

Step-by-step explanation:

Given value:

Temp-maximum=  

Temp. minimum =

It is halfway between 10 am and 10 pm to 4 am.  

The sinus and cosine roles could be used throughout the year to predict fluctuations in climate models. Its type of formula that can be used to model such information is:  

where parameters are A, B , C, D, T is the ° C temperature and t is the time (1-24)

D = 7.5 + 3 = 10.5

Its trigonometric function equation that model temperature T hours after midnight in Johannesburg t.

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour