Question

Help please:)need asap

Answer 1

The predicted temperature to the nearest degree fahrenheit, at 9 p.m. is 75  degree fahrenheit.

Functions and values

Given the equation that expresses the temperature, in degrees fahrenheit, in London during a day in august as;

t(x) = 9sin(0.4x - 4) + 74,

where;

x is the number of hours after midnight.

If the time is 9pm after midnight, the total number of hours will be 21 hours

Substitute x = 21 into the function to have;

t(21) = 9sin(0.4(21) - 4) + 74

t(21) = 9sin(4.4) +74
t(21) = 9(0.0767)+74

t(21) = 74.69 degree fahrenheit,

Hence  the predicted temperature to the nearest degree fahrenheit, at 9 p.m. is 75  degree fahrenheit.

Learn more on functions here: brainly.com/question/25638609

#SPJ1

Answer 2

The predicted temperature is 75° Fahrenheit

What is trigonometric functions?

Trigonometric functions show the relationship between the sides and angles of a triangle.

Analysis:

t(x) = 9sin(0.4x - 4) + 74

since it is 9pm, which is 21 hours from 12 midnight, x = 21

t(21) = 9 sin( 0.4 x 21 - 4) + 74 = 75° Fahrenheit

In conclusion, the predicted temperature at 9pm is 75° Fahrenheit

Learn more about trigonometric functions: brainly.com/question/24349828

#SPJ1