Answer:
11
Step-by-step explanation:
We have been given that tiles in each new row is 2 less than the row below it and the first roe has 23 tiles.
We can see that tiles in rows represents a arithmetic sequence. So we will use arithmetic sequence formula to find the number of tiles in 7th row.
, where is nth term of sequence, is first term of sequence and d is the common difference between consecutive terms.
Let us substitute our given values in above mentioned formula to find the 7th term of our arithmetic sequence.
Therefore, there will be 11 tiles in 7th row.
Your answer of 96 spuared feet becuase 12ft•8ft=96 squared feet.
Answer:
The probability that at most 3 attempts are required to produce a craft item with satisfactory quality is 0.9375
Step-by-step explanation:
Let E be a random variable denoting the event that an artist makes a craft item with satisfactory level.
Then the random variable E follows a Geometric distribution.
A Geometric distribution is defined as the number of failures (<em>k</em>) before the first success.
The probability function of Geometric distribution is:
, <em>p</em> = Probability of success and <em>k</em> = 0, 1, 2, 3...
The probability of success is, <em>p</em> = 0.5 and the number of failures is, <em>k</em> = 3.
Compute the probability of at most 3 attempts before the first success is:
Therefore, the probability that at most 3 attempts are required to produce a craft item with satisfactory quality is 0.9375.
Answer:
B
Step-by-step explanation:
11+7=18
Answer:
-sin x
Step-by-step explanation:
sin(3π/3+x)=sin (π+x)=-sin x
or
sin (π+x)=sin πcos x+cos π sin x=(0)cos x+(-1)sin x=0-sin x=-sin x