read the scales of this balance.
the unknown sample has a mass of:
a.) 1.012 kg
b.) 1.220 g
c.) 11.2 g
d.) 1.200 g

D.1.200 g

Step-by-step explanation:

We are given that unknown sample

We have to find the mass of unknown sample by reading the scales of given balance.

On first scale , reading=0 g

On second scale, reading=1g

On third scale, reading=0.2 g

Total mass=0+1+0.2=1.2 g

1.2 g can be written as 1.200 g because after decimal point when we write zeroes then it does not effect value of given number.

Hence, option D is true.

= 5

step-by-step explanation:

to find the 15th term substitute n = 15 into the nth term formula

= (- 3 × 15 ) + 50 = - 45 + 50 = 5

step-by-step explanation:

what is the figure? attach a picture.