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saveliy_v [14]
2 years ago
15

I need help now it’s an iready

Mathematics
1 answer:
schepotkina [342]2 years ago
3 0

answer:

21 + 3x (you would not put the x again since it is already given)

step-by-step explanation:

  • we have to distribute 3 to the expression in the parenthesis

3 (7 + x)

= 21 + 3x

  • this will be the expression once we distribute
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Software to detect fraud in consumer phone cards tracks the number of metropolitan areas where calls originate each day. It is f
pashok25 [27]

Answer:

0.999987

Step-by-step explanation:

Given that

The user is a legitimate one = E₁

The user is a fraudulent one = E₂

The same user originates calls from two metropolitan areas  = A

Use Bay's Theorem to solve the problem

P(E₁) = 0.0131% = 0.000131

P(E₂) = 1 - P(E₁)  = 0.999869

P(A/E₁) = 3%  = 0.03

P(A/E₂) = 30% = 0.3

Given a randomly chosen user originates calls from two or more metropolitan, The probability that the user is fraudulent user is :

P(E_2/A)=\frac{P(E_2)\times P(A/E_2)}{P(E_1)\times P(A/E_1)+P(E_2)\times P(A/E_2)}

=\frac{(0.999869)(0.3)}{(0.000131)(0.03)+(0.999869)(0.3)}

\frac{0.2999607}{0.00000393+0.2999607}

\frac{0.2999607}{0.29996463}

= 0.999986898 ≈ 0.999987

6 0
3 years ago
Basic Gemoetry Question please help
Oliga [24]

Answer:

D)

Step-by-step explanation:

DE is the radius of both circles

6 0
3 years ago
The percent increase of the airline ticket is ___%
JulsSmile [24]

Answer:

Step-by-step explanation:

%change=100(final-initial)/(initial)

For just the ticket

%change=100(375-300)/300=25%

For the ticket and baggage fee of $50

%change=100(375+50-300)/300=42%

7 0
3 years ago
If f(x) = x/2 -3 and g(x) = 3x² + x - 6, find (f + g)(x). O A. 3x O B. 3x² + 3x-9 3x O C. 3.x2 + x - 3 O D. 4x2-9​
Olenka [21]

Answer:

4x2-9

Step-by-step explanation:

it would be that because the number is in the c acis

8 0
3 years ago
The perimeter of a rectangular garden is 38 feet. If the length is 5 feet longer than the width, find the width of the
son4ous [18]

Answer:

Step-by-step explanation:

L and W are the length and width of the garden, respectively.

perimeter = 2L+2W = 38 ft

L+W = 19

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L = W+5

substitution

(W+5)+W = 19

2W+5  = 19

W = 7

4 0
3 years ago
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