Yes, parentheses can change the order in which operations are performed in an expression.
Let us understand this with two examples.
First example.
Let us suppose we have to simplify the expression

In this expression we have evaluated subtraction first instead of multiply.
Second example.
Let us suppose we have to simplify the expression

In this expression we have evaluated multiplication first and then subtraction.
Therefore, from above two examples we can see that parentheses can change the order in which operations are performed in an expression.
Answer:

Step-by-step explanation:
We are given equation as

Since, we have to write equation in slope-intercept form
so, we can use slope-intercept formula

where m is a slope
b is y-intercept
so, we can write our equation in this form

Distribute 3


Subtract both sides by 4



So, slope-intercept form of equation is

Answer: 62+63+64
Step-by-step explanation:
Divide 189 by 2. That gives you 63. Then go for a number 1 above it and 1 below it.
Answer:
0.223 is the answers for the question but I got this answer 0.181
Step-by-step explanation:
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The answer is 12.3 hours.
On the way to the beach, the family averaged 58 mi/h over 377 mi, so we take 377/58 to find the amount of time spent going to the beach. 377/58 = 6.5 hours.
On the way back, they averaged 65 mi/h over the same 377 mi, so we take 377/65. 377/65 = 5.8 hours.
6.5 + 5.8 = 12.3