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IRINA_888 [86]
3 years ago
10

2x4 + 4x3 – 30x2 = 0

Mathematics
1 answer:
liraira [26]3 years ago
7 0
That equation is false.
8 + 12 - 60 = -40 , not 0
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Two faulty machines, M1 and M2, are repeatedly run synchronously in parallel (i.e., both machines execute one run, then both exe
leonid [27]

The event that either M1 or M2 fails has probability

P(M_1\text{ fails or }M_2\text{ fails})=P(M_1\text{ fails})+P(M_2\text{ fails})-P(M_1\text{ and }M_2\text{ both fail})

by the addition rule. Failure events are independent, so

P(M_1\text{ and }M_2\text{ both fail})=P(M_1\text{ fails})P(M_2\text{ fails})

so that

P(M_1\text{ fails or }M_2\text{ fails})=p_1+p_2-p_1p_2

Denote this probability by p. Then X follows a geometric distribution with this parameter p and has density

P(X=x)=\begin{cases}(1-p)^{x-1}p&\text{for }x\ge1\\0&\text{otherwise}\end{cases}

The expectation is \dfrac1p=\dfrac1{p_1+p_2-p_1p_2}.

7 0
3 years ago
I need help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Zina [86]

Answer:

Yes, x and y have a proportional relationship.  

Step-by-step explanation:

A proportional relationship means that, when comparing two quanities, that they are both changing at a constant (same) amount.  When looking at a table to compare quantities, you can see that the pounds of tomatoes 'x' is increasing by one (1) each time.  If you look at the amount spent in dollars 'y', you can see that for each pound (x), the cost is increasing by $4.  So, since for every pound of tomatoes that is purchased increases by $4, then their relationship is proportional.  

8 0
3 years ago
Help please!!!!!!!! what is the answer
Anon25 [30]

Answer:

About 20 inches or A

Please give Brain

and hope this helped :D

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
-5+5=<br> 2-86=<br> simple math
uranmaximum [27]

Answer:

0

-84

Step-by-step explanation:

these are the answers bc math.

8 0
3 years ago
The clothing club sold 40 pants and shirts at a new store and made $700 from the sales. They charged $18 for each pants and $14
hoa [83]

Answer: The system of equations represents the constraints in this situation are:

s + h = 40

$18s + $14h = $700

The above equations are known as simultaneous equations. 40 scarves and hats were sold, this can be represented with this equation:

number of hats sold + number of scarves sold = 40

s + h = 40

The total amount made from the sales is the sum of the total amount made from the sale of the hats and the total amount made from the sale of the scarves. This can be represented with this equation:

($18 x s) + ($14 x h)  = $700

Step-by-step explanation:

3 0
2 years ago
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