Answer:
answer is B
Step-by-step explanation:
please I need brainlist
We have to choose which set of measures describes a quadrilateral that can not be inscribed in a circle. An inscribed quadrilateral has vertices that lie on a circle. The sum of the opposite angles of such quadrilateral is 180° ( the angles are supplementary ). Answer A: 103° + 77° = 180°, 69° + 111° = 180°. Answer B : 52° + 128° = 180°, 64° + 116° = 180°. Answer C: 42° + 136° = 178°, 64° + 118°=182° ( not complementary ). Answer D : 100° + 80° = 180° , 72° + 108° = 180°. Answer : C. 42°, 64°, 118°, 136°.<span> </span>
3x+y=9.....i
3x-5y=15...ii
subtracting ii from i we get
6y=-6 so y=-1
x=10/3
A confidence interval is an interval of values that contains the true value of a certain parameter (or proportion, in this case), with a fixed confidence. it is so important to start choosing the level of confidence that we want to have.
once done this, we need an estimate for the parameter/proportion of interest, as confidence intervals are built around these estimates.