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dedylja [7]
3 years ago
9

PLEASE HLEP 14.Write the expanded form of the expressions below: y(-3-7x)

Mathematics
1 answer:
denis23 [38]3 years ago
7 0

Answer:

− 7 − 3

Step-by-step explanation:

( − 3 − 7 )

( − 7 − 3 )

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The CEO of a clothing company estimates that 52% of customers will make a purchase. Part A: How many customers should a salesper
4vir4ik [10]

Answer:

(a) The expected number of should a salesperson expect until she finds a customer that makes a purchase is 0.9231.

(b) The probability that a salesperson helps 3 customers until she finds the first person to make a purchase is 0.058.

Step-by-step explanation:

Let<em> </em>the random variable <em>X</em> be defined as the number of customers the salesperson assists before a customer makes a purchase.

The probability that a customer makes a purchase is, <em>p</em> = 0.52.

The random variable <em>X</em> follows a Geometric distribution since it describes the distribution of the number of trials before the first success.

The probability mass function of <em>X</em> is:

P(X=x)=(1-p)^{x}p

The expected value of a Geometric distribution is:

E(X)=\frac{1-p}{p}

(a)

Compute the expected number of should a salesperson expect until she finds a customer that makes a purchase as follows:

E(X)=\frac{1-p}{p}

         =\frac{1-0.52}{0.52}\\=0.9231

This, the expected number of should a salesperson expect until she finds a customer that makes a purchase is 0.9231.

(b)

Compute the probability that a salesperson helps 3 customers until she finds the first person to make a purchase as follows:

P(X=3)=(1-0.52)^{3}\times0.52\\=0.110592\times 0.52\\=0.05750784\\\approx 0.058

Thus, the probability that a salesperson helps 3 customers until she finds the first person to make a purchase is 0.058.

8 0
3 years ago
What is the value of x
Afina-wow [57]

Answer:

4

Step-by-step explanation:

Sin(30) = LJ/8sqrt(3)

Sin 30 = ½

LJ = 4sqrt(2)

LM = JM = x

x² + x² = (4sqrt(2))²

2x² = 32

x² = 16

x = 4

6 0
3 years ago
Solve for x round to nearest tenth
yawa3891 [41]

Answer:

33.3

Step-by-step explanation:

tan A = opp/adj

tan 39° = 27/x

x tan 39° = 27

x = 27/(tan 39°)

x = 33.3

5 0
3 years ago
JONAS HAS A FILE CABINET IN THE SHAPE OF A right rectangular prism. the area of the base of the file cabinet is 450 square inche
Nostrana [21]
The volume of a rectangular prism can be found by the formula:
V = A × h

Where:
A = area of the base of the prism
h = height of the prism

Therefore:
V = 450 × 53 
   = 23850 in³

The volume of the file cabinet is <span>23850 in³.</span>
4 0
3 years ago
Read 2 more answers
At a carnival game, you randomly throw two darts at the board and break two balloons. What is the probability that both the ball
Amanda [17]
4/15 of the balloons are purple. You have two darts. There are 105 combinations of hitting two balloons out of the 15. There are 6 combinations of purple balloons to be hit. This (Purple combinations over total combinations) is your probability. 6/105 simplified to 2/35 or 2:35
So your chance of picking the purple balloons, both purple, out is 2 in 35 or 2/35
Brainliest?
6 0
3 years ago
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