Question

5.5+7[(6.3 + 2.1) X 4+ (10 – 4) = 2 A. 144.1 B. 164.7 C. 243.7 D. 261.7 E. 296.7

Answer 1

Firstly, let's simplify the expression inside the brackets:

6.3 + 2.1 = 8.4.

10 - 4 = 6.

Replace these values back into the original equation, we get:

5.5+7[(8.4) X 4+(6)].

Next, we will perform the calculation inside of the brackets using our order of operations (BODMAS/BIDMAS):

8.4 X 4 = 33.6.

Then, add 6 to this number:

33.6 + 6 = 39.6.

Replace this value back into the original equation:

5.5+7[39.6].

Now multiply 7 by 39.6:

7 * 39.6 = 277.2.

Finally, add 5.5 to this number:

277.2 + 5.5 = 282.7.

Therefore, the result is 282.7.