2 years ago

Let f(x) = 16 – x^2 , g(x) = 4 – x. Find (fg)(x) and its domain

Mathematics

1 answer:

Kay [80]2 years ago

8 0

F(4-x)=12
Domain:(-oo,oo) these are infinity symbols by the way.

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3 years ago

Heron’s formula: Area = Triangle PQR has sides measuring 9 feet and 10 feet and a perimeter of 24 feet. What is the area of tria

VladimirAG [237]

Hello,

Let's assume a,b,c the 3 sides of the triangle.

a=9
b=10
c=24-a-b=5

$p= \dfrac{a+b+c}{2} =12\\

S= \sqrt{p(p-a)(p-b)(p-c)} = \sqrt{12*3*2*7} = \sqrt{504} =22,4499...\approx{22}$