To present clearly, these are the following expressions:
Expression 1: <span>5+2×(3+3)×(3−1)
Expression 2: 5+2×3+3×3−1
The numbers and operations are just the same, but the first expression involves parentheses. 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).
</span>Expression 1: 5+2×(3+3)×(3−1)
Do the operations inside the two parentheses first:
5 + 2 × 6 × 2
Then, the next priority is multiplication:
5 + 24 = 29
Expression 2: 5+2×3+3×3−1
Prioritize multiplication:
5 + 6 + 9 -1
Prioritize the addition next.
20 - 1 = 19
The difference of the 2 expressions is: 29 - 19 = 10.
9x-20=7
9x=27
x=3
Hope that helps you :)
Answer:
D
Step-by-step explanation:
The treatment in the case given is the testing of the fertilizers. For portions labelled A : Old fertilizers, B : New fertilizers , C : No fertilizers.
Each and every soil is treated with 3 different fertilizers at each and every type of soil, the results are interpreted from harvest of soybeans
Answer:
2nd,3rd,5th
Step-by-step explanation:
use line of the best fit to plug in numbers and get answers
