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3 years ago

#1 Compute the expected value of the distribution.

Mathematics

1 answer:

dolphi86 [110]3 years ago

5 0

Answer:

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Simplify the expression given below x^2 + x-2

tamaranim1 [39]

X^2+x-2
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3 years ago

X + ky = 1

Marina CMI [18]

X + k y = 1
k x + y = 1 / * ( - k )
----------------
x + k y = 1
- k² x - k y = - k
--------------------
x - k² x = 1 - k
x ( 1 - k² ) = 1 - k
x = ( 1 - k ) / ( 1 - k² ) = ( 1 - k ) / ( 1 - k ) ( 1 + k )
y = 1 - k( 1 - k )/( 1 - k² )
y = ( 1 - k ) / ( 1 - k² ) = ( 1 - k ) / ( 1 - k ) ( 1 + k )
a ) For k = - 1 this system has no solution.
b ) For k ≠ - 1 and k ≠ 1, the system has unique solution:
( x , y ) = ( 1/ (1 + k) , 1/( 1 + k ) ).
c ) For k = 1, there are infinitely many solutions.

3 0

3 years ago

Hi please help me as soon as possible:

sammy [17]

Answer:

Percentage = 14.2%

Step-by-step explanation:

Given the following data;

Cost of plane ticket = £588

Airport tax = $130

£1 = $1.34

To find the percentage of the total cost spent on airport tax;

First of all, we would convert the ticket cost in pounds (£) to dollars ($).

Cost of plane ticket = £588 to $ = 588 * 1.34 = $787. 92

Total cost = Cost of plane ticket + Airport tax

Total cost = 787. 92 + 130

Total cost = $917.92

$Percentage \; cost = \frac {130}{917.92} * 100$

$Percentage = 0.1416 * 100$

Percentage cost = 14.16 to 1 d.p = 14.2%

Therefore, the percentage of the total cost spent on airport tax by Rimo is 14.2 percent.

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3 years ago

Find the area of ABC.

love history [14]

Answer:

Suppose, a triangle ABC, whose sides are a, b and c, respectively. Thus, the area of a triangle can be given by; Area= 30

Area = 1/2 x 15 x4 = 30 square yards

Step-by-step explanation:

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3 years ago

Read 2 more answers

Whoever answers correctly gets brainlist!

dybincka [34]

Answer:

8.9 = z

Step-by-step explanation:

11 = 2.1 + z - subtract the 2.1 from the 11

7 0

3 years ago