I would go with C
Ecology is the study of interaction and relation between organisms and their environment as well as how organisms interact with each other
The number is 5/2 or 2.5
7 is added to six times a number, the result is 22
The number sentence is interpreted this way:
7+6n=22
6n=22–7
6n=15
The goal here is to find out the value of n.
Let’s divide both sides of the equation with 6
6n/6=15/6
n= 5/2 or 2.5
Let’s check by substituting the value of n to the given equation.
Always remember to follow the PEMDAS rule. We will deal with Multiplication and Addition after.
If n=2.5
7+6n=22
7+6(2.5)=22
7+15=22
22=22
Given the result, this means that the value of the number represented by n is 2.5 or 5/2.
Answer:
The best estimate for 43x78 is 40x80
Step-by-step explanation:
43 rounded to the nearest ten is 40.
78 rounded to the nearest ten is 80.
The answer to 40x80 is 3200
If one is 4 , then other may be 3 and so other 2......this will get you only 9 .
so it is understood that one must be greater than 4
