answer is 7.
since the unkown number is multiplied by itself what we need to do to get out answer is to work backwards. Thats where we cube root 343 to get 7.(∛343 =7)
The formula to find the number of chairs in each row is m = x ÷ n,
where
m - the number of chairs,
n - the number of rows,
x - the number of people.
If 60 people attend the meeting and each row has 4 chairs, there are 15 <span>rows.
</span>This is assumed using the above formula:
m = x ÷ n
If:
x = 60
m = 4
Then:
4 = 60 ÷ n
⇒ n = 60 ÷ 4
<span>⇒ n = 15</span>
The distance around the edge of an object is called its perimeter.
Answer:
1320
Step-by-step explanation:
There are three "spots" for balls.
__ __ __
For the first "spot," and without replacement, meaning we don't put the balls back, there are 12 choices.
12 __ __
But for the next spot, there are only 11 choices. And for the next, there are only 10!
12 11 10
Since these are independent events, we multiply them together.
12 x 11 x 10 = 1320
There are 1320 possibilities!
How could we do it on the calculator, much faster? The question says "in order," so we know it's a <em>permutation,</em> not a <em>combination.</em> This is the nPr button on the calculator (math -> prb -> 2). Just type in 12 nPr 3 and you get the same answer, 1320.