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zepelin [54]
3 years ago
15

Suppose the bank installs nine alarms. What is the expected number of alarms that will detect a burglar?

Mathematics
1 answer:
Harrizon [31]3 years ago
3 0
The answer is 6 because
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I need help on the first one
Phantasy [73]

Answer:

to be honest idek

Step-by-step explanation:

7 0
2 years ago
There are 3 inches of snow on the ground when it begins to snow 0.5 inches per hour.
algol [13]
The answer is <span>y=0.5x+3

</span><span>There are 3 inches of snow on the ground: y = 3
</span><span>When it begins to snow 0.5 inches per hour: y = 0.5x
</span>There are 3 inches of snow on the ground when it begins to snow 0.5 inches per hour: y = 0.5x + 3<span>

</span>
3 0
2 years ago
sharla has 87 silver coins in her collection and 82 copper coins in her collection. She rounded each type of coin to the nearest
valina [46]

Answer:

no it is not reasonable

3 0
3 years ago
A coin is tossed a number cube is rolled <br> P(tails and 3)
Anarel [89]

Answer:

1/6

Step-by-step explanation:

The coin toss and the cube roll are entirely separate and independent events.  To find the joint probability P(tails and 3) we need only find the probabilities of the two events and then multiply them together.

P(tails) = 0.5

P(3) = 1/6, or 0.3333 ....

Desired joint probability = (1/2)(1/3) = 1/6

5 0
2 years ago
Sec^6x(secxtanx)-sec^4(secxtanx)=sec^5xtan^3x<br> Verify the trigonometric identity
mario62 [17]

I guess you mean

\sec^6x(\sec x\tan x)-\sec^4x(\sec x\tan x)=\sec^5x\tan^3x

On the left side, we have a common factor of \sec^4x(\sec x\tan x)=\sec^5x\tan x, so that

\sec^6x(\sec x\tan x)-\sec^4x(\sec x\tan x)=\sec^5x\tan x(\sec^2x-1)

Recall that

\sec^2x=1+\tan^2x

from which it follows that

\sec^5x\tan x(\sec^2x-1)=\sec^5x\tan x\tan^2x=\sec^5x\tan^3x

7 0
3 years ago
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