Question

(28 ⋅ 5−5 ⋅ 190)−2 ⋅ ⋅ 228 (5 points) Write your answer in simplified form.

Answer 1

Hello!

Let's follow the BEDMAS rule.

First we should do everything inside the brackets. According to BEDMAS we should do multiplication first before subtraction:

(28 × 5 - 5 × 190) 

28 × 5 = 140
5 × 190 = 950

(140 - 950) = -810 

So now we have: 

(-810 - 2 × 5^-2) / 2^3 

Next, we do exponents so: 

5^-2 = 1/25 
2^3 = 8 

(-810 - 2 × 1/25) / 8

(-810 - 2/25) / 8

(-20252/25) / 8 = -5063/50

So now we have:

(-5063/50)^4 × 288

If we plug the first term into a calculator and out it to the party of 4, we get:

105136058.7 

So that number times 288 we get:

3.03x10^10 as the Correct Answer

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