The answer to this question is D
Answer:
62,5721
Step-by-step explanation:
12,01 × 5,21
= 62,5721
A square garden plot has an area of 75 ft2.
a. Find the length of each side in simplest radical form.
First, a square area (A) = length (l)^2
A(ft2) = l^2 --> so l(ft) = square root (sr) of A
l = srA = sr75
Next, factor out 75 into number with even roots: 25•3 = 75
So l = sr25•sr3 --> l = 5•sr3 ft
5•sr3 is in the simplest radical form
b. Calculate the length of each side to the nearest tenth of a foot.
l = sr3 = 1.732 --> so 5•1.732 = 8.66ft
Tenth is one place to the right of the decimal, so l = 8.7 ft
First, find where they are equal
because g(x) grows at a faster rate so it will somwehre start to go past f(x)
solve for x such that f(x)=g(x)
so
3x+30=x²+20
minus (3x+30) both sides
0=x²-3x-10
facotr
what 2 numbers multiply to get -10 and add to get -3?
-5 and 2
0=(x-5)(x+2)
set each to zero
0=x-5
5=x
0=x+2
-2=x
at x=5 and -2
test points between them
at x=-3, g(x)>f(x)
at x=0, f(x)>g(x)
at x=6, g(x)>f(x)
so g(x)>f(x) when x<-2 or x>5
so I think the teacher is looking for that point when g(x)<f(x) then g(x)>f(x)
so that would be at x=5
