Question

simplify the following 4×3.1 +2×1.6-0.9​

Answer 1

Step-by-step explanation:

use BODMAS

4 x 3.1 + 2 x 1.6 - 0.9

= 12.4 + 3.2 - 0.9

= 15.6 - 0.9

= 14.5 ans

Answer 2

The numbers the said to be in proportion of product of there extreme is equal to product of mean.

Here, extreme are:- 1.2 and 1.2

product of extreme = 1.2 × 1.2 = 1.44

Mean are :- 1.6 and 0.9

product of mean = 1.6 × 0.9 = 1.44

Since , Product of extreme= Product of mean

So, they are in proportion.