Answer:
It is an example of an observational study.
Step-by-step explanation:
3.4×10⁻¹⁴ × 1.8×10²⁸
= (3.4 x 1.8) x 10⁽⁻¹⁴⁺²⁸⁾
= 6.12 x 10¹⁴
Answer is A.
Hope it helps!
Answer:
2:1???
Step-by-step explanation:
Answer:
the answqee is D.
Step-by-step explanation:
Answer:
the value is k=
Step-by-step explanation: