Hello :
(fog)(-6) = f(g(-6))
but : g(-6) =4(-6)-2 =-26
(fog)(-6) = f(g(-6)) = f(-26) =3(-26)+7 = -78+7=-71(answer : <span>A.-71 )</span>
Answer:
b.
Step-by-step explanation:
Factor 25p^ 2 -81q^ 2 : (5p + 9q)(5p - 9q)
Steps
25p ^ 2 - 81q ^ 2
=(5p)^ 2 -(9q)^ 2
Apply Difference of Two Squares Formula: x ^ 2 - y ^ 2 = (x + y)(x - y)
(5p) ^ 2 - (9q) ^ 2 = (5p + 9q)(5p - 9q)
=(5p+9q)(5p-9q)
Sorry i could not understand it clearly make it tidy
Answer:
7 + 3 = 10, difference means the answer to a subtraction problem, not sure I understand the question
Step-by-step explanation:
Answer:
Option: a is correct
a) y= -cos x
Step-by-step explanation:
We could clearly see that the graph of the function passes through a point on the y-axis which is :
(0,-1)
i.e. when x=0 the value of the function y= -1
So we will check in each of the following options by putting x=0 and check whether y= -1 or not.
b)
y=sin x
on putting x=0 we get:
y=sin 0=0≠ -1.
Hence, option b is incorrect.
c)
y= cos x.
we put x=0
y= cos 0=1≠ -1.
Hence, option c) is incorrect.
d)
y= -sin x
we put x=0 to obtain:
y= -sin 0=0≠ -1.
Hence, option d is incorrect.
Hence we are left with option a i.e.
The graph represents the function:
y= -cos x. (Hence, option a is correct)
( Also it satisfies at x=0
since, y= -cos 0= -1 )
