Answer:
11 hours babysitting
7 hours music lesson
Step-by-step explanation:
(11*5) + (7*12) = 139
Ans is c because the b and a has to be sub and u get the ans as c
It looks like A, but the answer is a little messed up.
The Recursive sequence should be:
An=-1 An+1=An+5
Answer:
Option B is correct answer.
Step-by-step explanation:
We need to solve the expression sec2xcot2x.
We know sec x = 1/ cos x and cot x = 1/ tan x and tan x = sin x/cos x and 1/tanx = cosx /sinx
Since in question we 2x instead of x so, replacing x with 2x and Putting values:
![sec2x\,\, cot2x\\=\frac{1}{cos 2x} * \frac{1}{tan 2x} \\=\frac{1}{cos 2x} * \frac{cos2x}{sin2x}\\=\frac{1}{sin 2x}\\=csc2x](https://tex.z-dn.net/?f=sec2x%5C%2C%5C%2C%20cot2x%5C%5C%3D%5Cfrac%7B1%7D%7Bcos%202x%7D%20%2A%20%5Cfrac%7B1%7D%7Btan%202x%7D%20%5C%5C%3D%5Cfrac%7B1%7D%7Bcos%202x%7D%20%2A%20%5Cfrac%7Bcos2x%7D%7Bsin2x%7D%5C%5C%3D%5Cfrac%7B1%7D%7Bsin%202x%7D%5C%5C%3Dcsc2x)
So, Option B is correct answer.
It's not B. It's C. The product of two irrational numbers is irrational. When you multiply 2 irrational numbers, you most likely will get an irrational answer, but sometimes, you get a rational number, meaning it's false.