Answer:
It's x^4+2x^2+2
Step-by-step explanation:
The argument of f(f(x)) function becomes x^2+1-> F=(x^2+1)^2+1 Opening the brackets you get my answer. Not sure if O sign stood for ^4.
The answer could be x = -y
Step-by-step explanation:
first we use Pythagoras to get t :
c² = a² + b²
with c being the Hypotenuse.
so,
t² = r² + s² = 10² + 31² = 100 + 961 = 1061
t = sqrt(1061)
and then we use the law of sine :
a/sin(A) = b/sin(B) = c/sin(C)
with the angles being opposite of their related sides.
so, r/sin(R) = t/sin(T) = t/sin(90) = t/1 = t
sin(R) = r/t = 10/sqrt(1061) = 0.30700278...
R = 17.8786966... ≈ 17.9°
Well, if 0.4% was defected, then 99.6% of the parts are good, because 100-0.4 is 99.6. Multiply 99.6% with 54650, and you get 54431.4. You should round down, because you can't have parts of parts. So, 54431 parts were good.
Answer:
4.
A = arcsin(BC/AB) = arcsin(4/10) = ~23.58 deg
B = arccos(BC/AB) = arccos(4/10)= ~66.42 deg
AC = sqrt(AB^2-BC^2) = sqrt(10^2-4^2) = 9.16
5.
A = 90-B=90-20 =70
AB = AC/sinC = 30/sin(20deg) = ~87.71
BC = sqrt(AB^2-AC^2) = sqrt(87.71^2-30^2) = ~82.42
6.
AB = AC/cosA =125/cos(50deg) = ~194.46
B = 90-A = 90-50 =40
BC = sqrt(AB^2-AC^2) = sqrt(194.46^2-125^2) = ~148.96
7.
AB = AC/cosA =8/cos(20deg) = ~8.51
B=90-A =90-20=70
BC = sqrt(AB^2-AC^2) = sqrt(8.51^2-8^2) =~2.90
