Without graphing, determine the equation of the axis of the function y=-2.6 cos(5x) + 8.4

Explanation:

The given equation is in the form

y = A*cos(B(x-C))+D

where

A = -2.6

B = 5

C = 0

D = 8.4

The value of D determines the horizontal axis that passes through the center of the cosine function. The equation of this axis line is y = 8.4

This is a horizontal line in which all points have y coordinate of y = 8.4

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3