Answer:
5/7
Step-by-step explanation:
Simplify by finding common factors and dividing both the numerator and denominator by it.
40/ 56 = 20/28(divided by 2) = 10 / 14 (divided by 2) = 5/7 ( divided by 2)
Hope this helps.
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Given:
The given expression is:

To find:
The value of the given expression at
.
Solution:
We have,

Substituting
, we get
![\dfrac{3\sin (-45)-4\sin [4(-45)]}{\sin [5(-45)]}](https://tex.z-dn.net/?f=%5Cdfrac%7B3%5Csin%20%28-45%29-4%5Csin%20%5B4%28-45%29%5D%7D%7B%5Csin%20%5B5%28-45%29%5D%7D)



On substituting
, we get,




Therefore, the value of the given expression at
is
.

We are to find the value of

First we need to find the inverse of f(x) . The inverse of

is

.
Steps to find inverse of f(x) are shown below in the image.
So

=
Therefore, the correct answer is option C
Answer:
Step-by-step explanation:
n²,5n
common denominator=5 n²
Answer:
A
Step-by-step explanation:
y = mx + c
y = -½x + 1