Answer:
An experimental study because it will give the most accurate results.
Step-by-step explanation:
The observational study could also be somewhat useful, but the most accurate results will come from an experimental study. You will test the difference in DNA, blood pressure, and such. Whilst, the observational study, you only can observe the effects from the outside. The sample studies mean nothing because you can't test both sides of the complete study.
D, because 3 and 9 go into some odd numbers. 2 is your answer
Answer:
32w^3 + 16x^2 - 8
Step-by-step explanation:
Perimeter = 2L + 2W
L = 9W^3 + 8W^2, W = 7w^3-4
2(9w^3 + 8w^2) + 2(7w^3 - 4)
= 18w^3 + 16w^2 + 14w^3 - 8
Combine like terms
32w^3 + 16w^2 - 8
Answer:
74
Step-by-step explanation:
A polygon's angles add up to (n-2)*180, where n is the total number of sides, and a hexagon has 6 sides, which means its angles add up to 720 degrees.
Therefore, we can set up an equation where the missing angles, marked as x, and the rest of the angles add up to 720:
x+x+152+108+140+172=720
2x+572=720
2x=148
x=74
Therefore, the angles of the 2 missing angles is 74