In mathematics, when you are presented with multiple operations in one equation, you follow the PEMDAS rule. This rule assigns which operation should be the first priority. The P means parenthesis. So, any expression inside the parenthesis should be calculated first. This is followed by Exponent(E), Multiplication (M), Division (D), Addition (A) and lastly, Subtraction (S). Technically, when all you have left is addition and subtraction, priority doesn't matter because of associative property.
Step 1: Nothing has change. Blake just copied the original equation.
Step 2: Blake changed the placing of the parenthesis. As mentioned earlier, you have to prioritize what's inside the parenthesis first. You can't change the position of the parenthesis. It will matter. Good thing, the answer, in this case, does not matter. But this does not apply to all situations.
Step 3: Blake was correct. He prioritize the <span>(− 9.2 − 0.8) term which is equal to -10.
Step 4: Associative property allows you interchange the order of the operations without changing the final answer. This is applicable to addition and subtraction operations. Hence, this was used correctly.
Step 5: Technically, this was correct because addition is prioritized more than subtraction.
Therefore, Blake's error was in Step 2.</span>
Answer:
-8 1/2
Step-by-step explanation:
Divide each side by 2
2r/2=r
-17/2= -8 1/2
Step-by-step explanation:
multiply the denominator with the mixed number then add the numenator
4 × 2 +1 /4
= 8 + 1/4
= 9/4
again for mixed fraction
divide the numenator by denominator and put the quotient in the front side and remaining in numenator
13/7
= quotient = 1 , remaining = 6
Answer:
201.1 km^3
Step-by-step explanation:
The volume of a cylinder is V=πr2h. In this problem, our radius is 8, and our heigh is 4. Plugging in our values we get:
V=π(8)(2)(4)=64π, which is approximately 201.1.
Hope this helped,
~cloud
The five gallons is cheaper since 97.45 divided by 5 is equal to 19.49.
