Answer:
875246b438b f34 43
Step-by-step explanation:
Answer:
if x = arc FG, then x = 130 degrees, the bigger arc is 230 degrees.
Step-by-step explanation:
We see there are 2 tangent lines of circle R
There is a theorem that says angle FGH = [ (arc FEH) - (arc (FH)] /2
50 = (arc FEH - arc FH) /2
arc FEH - arc FH = 100
and arc FEH + arc FH = 360
solving this system you should get FH = 130 and FEH = 230
Answer:
9
Step-by-step explanation:
<em>Degrees of freedom</em> is the number of values in the final calculation of a statistic that are free to vary. Degrees of freedom are related to sample size and calculated by n-1 where n is the <em>sample size</em>.
The Supervisor selects 10 teddy bears as sample from 5000 teddy bears produced daily. Therefore in this situation, there are 10-1=9 degrees of freedom
Answer:
The second option
Step-by-step explanation:
The given system of equation is
x+2y=3
-x+y+z=2
y-2z=-3
The augment matrix is obtained by combining the coefficient matrix with the constant matrix to obtain;
![\left[\begin{array}{cccc}1&2&0&|3\\-1&1&1&|2\\0&1&-2&|-3\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bcccc%7D1%262%260%26%7C3%5C%5C-1%261%261%26%7C2%5C%5C0%261%26-2%26%7C-3%5Cend%7Barray%7D%5Cright%5D)
Note that the absence of z, in the first equation means its coefficient is zero. The same thing applies to x in the last equation.
The correct choice is the second option.