Answer:
A. 12
Step-by-step explanation:
If A and D are congruent, then 
which becomes 
after adding which then solves down to 
.
Answer:
Step-by-step explanation:
simplify
square root- 2/5 a³
Also possible option is B if 4a⁶/25 is under root
Answer:
RS: 26
ST: 40
Step-by-step explanation:
RS + ST = RT
3x - 16 + 4x - 8 = 60
3x + 4x - 16 - 8 = 60
7x - 24 + 24 = 60 + 24
7x = 84
7x / 7 = 84 / 7
x = 12
---------------------------------------
RS
3x - 16
3 (12) - 16
36 - 16
20
---------------------------------------
ST
4x - 8
4 (12) - 8
48 - 8
40
----------------------------------------
RS + ST = RT
20 + 40 = RT
60 = RT
Answer: Sometimes
Step-by-step explanation:
This is a very tricky question. We know that in an isosceles triangle, two sides are the same. Because of this, we know that the right angle is always 90 degrees, and the other sides would be 45 degrees each because all triangles add up to 180 degrees. A right triangle could also be scalene, meaning none of the sides are the same, for example a scalene triangle could have sides of 44, 46, and 90 degrees. Rest assured, a right triangle will never be equalateral. Hope this helps :) Merry Christmas
Answer:
Option A is right
Step-by-step explanation:
Given that approximately 52% of all recent births were boys. In a simple random sample of 100 recent births, 49 were boys and 51 were girls. The most likely explanation for the difference between the observed results and the expected results in this case is
A) variability due to sampling
-- True because there is a slight difference whichmay be due to sampling fluctuations.
B) bias
False because given that 100 random births selected
C) nonsampling error
False. There is no chance for systematic error here.
d) Confounding: There is no confounding variable present inchild birth since each is independent of the other
e) a sampling frame that is incomplete
False because the sampling is done correctly.
