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2 years ago

Translate and simpify: subtract 18 from -11

Mathematics

1 answer:

yawa3891 [41]2 years ago

5 0

Answer:

should be -29

Step-by-step explanation:

If you subtract a positive from a negative number you basically add them both and put a - onto the number

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For safety reasons, four different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hi

larisa [96]

Answer: a) $(0.99)^4$

Step-by-step explanation:

Given : For safety reasons, four different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills bank.

Each of the four systems detects theft with a probability of .99 independently of the others .

Probability for independent events $(E_1 , E_2 , E_3 , ....., E_n)$ occurs together = $P(E_1)\times P(E_2)\times P(E_3)\ .....\times P(E_n)$ .

Then, the probability that when a theft occurs, all four systems will detect it

= (0.99) x (0.99) x (0.99) x (0.99)

$= (0.99)^4$

Hence, the probability that when a theft occurs, all four systems will detect it is $(0.99)^4$ .

Hence, the correct answer is a) $(0.99)^4$ .

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2 years ago

What is the best approximation of the solution to the

denis-greek [22]

Answer: Choice C. (1, -6)

Explanation: The two lines cross at around this location. The solution point is on both lines at the same time.

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2 years ago

What is the formula for the following geometric sequence? -5, -10, -20, -40, ... an = -5 · 2n - 1 an = -5 · (-2)n - 1 an = -2 ·

vazorg [7]

$-5 * 2^{n-1}$

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3 years ago

Find all real square roots of −81 .

Lilit [14]

There are no real roots for a negative number, so -81 has no real roots, if the number is 81 however, then the tow roots are 9

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2 years ago

Please help ...........

viva [34]

I believe the answer is d

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2 years ago