Answer:
BDC and ADB
Step-by-step explanation:
SAS, two sides are congruent and the angles are equal
Answer:

Step-by-step explanation:
In order to add or subtract numbers in scientific notation, the powers of ten must have the same exponent. In this caes the diameter of an average human body cell is a power of -4 and the diameter of a plant cell is a power of -3. In order to add them, we can move the decimal over for the body cell diameter:

Add the two values: 
Tell me the problems and i may be able to help
Answer:
4a. 41, 4b. 26.2, 4c. 42.8, 4d. 27.05 26.2, 27.05, 41, 42.8
Step-by-step explanation: