42.43 you would just square root it by typing in 1800 then hitting the radical sign. Hope this helped
Step-by-step explanation:
f(x) = x² - 4x - 4
the general formula for solving such a quadratic equation (for f(x) = 0) is
x = (-b ± sqrt(b² - 4ac))/(2a)
in our case
a = 1
b = -4
c = -4
x = (4 ± sqrt(4² - 4×1×-4))/(2×1) = (4 ± sqrt(16 + 16))/2 =
= (4 ± sqrt(2×16))/2 = (4 ± 4×sqrt(2))/2 = 2 ± 2×sqrt(2)
x1 = 2 + 2×sqrt(2)
x2 = 2 - 2×sqrt(2)
The approximate area of the circle is 3737.385 cm
Answer:
-1/2 or -0.5
Step-by-step explanation:
5(2x+4)=15
10x+20=15
10x=-5
x=-5/10
x=-1/2
you just add them together to get 17
