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konstantin123 [22]

2 years ago

12

There are 10 keys and only one of them can open a lock. We do not know which key can open the lock, but we will try them one by

one until we find the right key. Let X denote the number of times tried to find the right key what is the pmf of X

1 answer:

CaHeK987 [17]2 years ago

7 0

Answer:

thhhhhhheeeeeeeee p.m.f of x

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Answer plsss as soon as possible

shtirl [24]

Answer:

Step-by-step explanation:

both angles must add up to 180 so

6x+12+3x+63 must =180

= 9x+75

9x+75=180

-75 -75

9x=105

x=11.66

meaning A is approximately 81.96

3 0

1 year ago

Compute: 3/8 divided -0.25

Makovka662 [10]

Answer:

-1.5

Step-by-step explanation:

3/8 is 0.375 in decimal form

3 0

2 years ago

Read 2 more answers

NEED HELP !!!!!!!!!!!!!!!!!!!!!!!

kati45 [8]

Answer:

A

Step-by-step explanation:

7 0

3 years ago

CAN SOMEONE HELP ME WITH PATTERN 1

jeyben [28]

1- 6
2- 4
3- 2
And that’s all I can tell you? It’s decreasing so I don’t think 10 would have any stars unless if negative numbers are allowed

5 0

2 years ago

Given that the expression x³_ ax² + bx+c leaves the same remainder when divided by x + 1 or x-2, find 'a' in terms of 'b'.

goblinko [34]

Answer:

Hi,

a=b+3

Step-by-step explanation:

$\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=-1&&-1&a+1&-a-b-1\\---&---&---&---&---\\&1&-a-1&a+b+1&c-a-b-1\\\end{array}$

$\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=2&&2&4-2a&2b+8-4a\\---&---&---&---&---\\&1&2-a&b+4-2a&c+2b+8-4a\\\end{array}$

Thus:

c+2b+8-4a=c-a-b-1

3b-3a=-9

<u>a=b+3</u>

5 0

1 year ago