Which of the following tools should a scientist use to measure an object in milligrams?
a. graduated cylinder
b. pan balance
c. tape measure
d. thermometer

B. Pan balance

Step-by-step explanation:

Which of the following tools should a scientist use to measure an object in milligrams?

The answer is : B. Pan balance

A pan balance is a device for weighing.

This device has 2 pans on a balanced beam. When these pans contain exactly the same mass the beam is in balance.

Other devices do not measure objects in milligrams.

, and

for

step-by-step explanation:

we can analyze the pattern at which the terms increase. let us denote , , , so that we can call

note the following:

the pattern: to get the next term value, we just add the next term number (e.g. 1st, 2nd, to the previous term value (term values are the given numbers in the question, 1, 3, 6, 10, 15,

from , to get to , we add

from , to get to , we add

etc.

we need to form a recursive formula, a formula that has the next term as a function of the previous term. so a possible recursive formula can be

, and for

exactly you go it

step-by-step explanation: