162/(6(7-4)^2)
pemdas
parenthasees inner first
so 7-4 is forst
7-4=3
162/(6(3)^2)
then exponents
3^2=9
162/(6(9))
multiplication
6 times 9=54
162/(54)=3
Answer:

Step-by-step explanation:
Given

Required
Determine the roots
To get the root of the function, then f(b) must be 0;
i.e. f(b) = 0
So, the expression becomes

Add 75 to both sides


Take square roots of both sides


Reorder

Expand 75 as a product of 25 and 3

Split the expression




The options are not clear enough; however the roots of the equation are 
Answer:
100/25 = 4
so an equivalent would be 12/3
Hello :
<span>The circumference of the circle is 24π inches
</span>
<span>The length of the arc is (100/360)×24π = 20.93 inches
</span><span>(The complete circumference would cover 360°. Angle
ALB is 100°)<span> </span></span>