The answer is D. 10. Let me know if you want me to show my work
Answer:
Undercoverage
Step-by-step explanation:
using the telephone directory as the source of survey subject could lead to undercoverage because the sole reason for carrying out a survey is to select a sample that represent the whole populace not a sample that represent those that have telephone.
undercoverage will be a constraint because people without a telephone or people with telephone number not on the telephone directory were not observe in the sample frame and could lead to confounding.
Answer:
-3/4, -1/2, -2/5
Step-by-step explanation:
-1/2 = -0.5 = -10/20
-3/4 = -0.75 = -15/20
-2/5 = -0.4 = -8/20
The correct answer is 120 degrees.
With the bigger triangle you can add all of the angles to get 60 degrees. (35+25)
This leaves you with a 120 degrees angle in the unmarked corner of the triangle. Any horizontal line and any triangle is 180 in total.
So with a 120 degree angle in the corner this leaves us with a 60 angle in the smaller triangle. ( The smaller triangle equals 60 degrees in all corners, it is equalateral ).
X is on a horizontal line and we now know that the one side of the line equals 60 degrees and any horizontal line equals 180 in total, this means that the measure of X is 120, (60+120)
X is 120 :)