Hi. I need help with these questions (see image)
Please show workings.
Answer c and d.

see explanation

Step-by-step explanation:

Using the chain rule and the standard derivatives

Given

y = f(g(x)) , then

= f'(g(x)) × g'(x) ← chain rule

(tanx) = sec²x , (cotx) = - csc²x

(c)

y = tan = tan

= sec² × ( )

    = sec² ×

    = sec² ×

   =

(d)

y = cot(1 + x)

= - csc²(1 + x) × (1 + x)

   = - csc²(1 + x) × 1

   = - csc²(1 + x)

898.1666667

step-by-step explanation:

5389/6 = 898.1666667

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: