I do not know the answer but use ur dang brain dumb ahhhh
Answer:
Angle B=92
Arc DCB=228
Step-by-step explanation:
Arc DCB intercepts Angle A.
Arc DCB is twice of Angle A so that means Arc dCB=228
Angle C is supplementary so Angle B equal 92.
The area of a square is its side length squared. So the side length of the square squared is 42, so the side length of the square is sqrt(42). The perimeter of the square is 4 times the side length, or 4sqrt(42), which is approximately 25.92.
English translation:
If the quality control manager wants to estimate the average life of lamps with 20 hours, with a confidence level of 95% and an error of 10% is assumed. What is the sample size?
Answer:
the answer is 4
Step-by-step explanation:
if y=21 the we substitute in the main equation
21=8x-11
8x=32
x=4
