Emmanuel brought 28 lb of potting soil this week. This amount is 4 lb more than twice the amount of potting soil he brought last
1 answer:
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Order of operations are:
<span>1. Parentheses (simplify inside 'em)
2. Exponents
3. Multiplication and Division (from left to right)
<span>4. Addition and Subtraction (from left to right)
So, on your first one:
Parentheses first:
8(3+4)-2*8/(5-3)
8(7)-2*8/(2)
There are no exponents so multiplication and division:
56-16/2
56-8
Finally, addition and subtraction:
56-8=48
Your second problem is a bit more complicated but follows the same rules:
</span></span>
<span><span>
Parentheses first:
</span></span>
<span><span>
Now, exponents. Even though they are inside parentheses, we can't go further until we simply those.
(64+81)/5
Now back to parentheses:
(145)/5
Division:
145/5=29
Hope that helps</span></span>
<span>1. Parentheses (simplify inside 'em)
2. Exponents
3. Multiplication and Division (from left to right)
<span>4. Addition and Subtraction (from left to right)
So, on your first one:
Parentheses first:
8(3+4)-2*8/(5-3)
8(7)-2*8/(2)
There are no exponents so multiplication and division:
56-16/2
56-8
Finally, addition and subtraction:
56-8=48
Your second problem is a bit more complicated but follows the same rules:
</span></span>
<span><span>
Parentheses first:
</span></span>
<span><span>
Now, exponents. Even though they are inside parentheses, we can't go further until we simply those.
(64+81)/5
Now back to parentheses:
(145)/5
Division:
145/5=29
Hope that helps</span></span>
For this case we have to by definition, if two lines are perpendicular then the product of its slopes is -1.
That is to say:
We have the following equation:
So:
Thus:
Thus, a line perpendicular to the given line must have slope
Option A:
It is not perpendicular!
Option B:
If it is perpendicular!
Option C:
It is not perpendicular!
Option D:
It is not perpendicular!
The correct option is option B
ANswer:
Option B