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3 years ago

Algebra 2, need help with these and some others

Mathematics

1 answer:

lozanna [386]3 years ago

7 0

Five different problems in one post? That's a turn-off for some potential helpers. Suggest you post only ONE problem at a time.

In regard to the first problem: Your Principal (P) is $8000. The Interest Rate (i) is 19%. The elapsed time is 7 years. Using the formula for continuous compounding:

A = P e^(rt), where "e" is the very common base with value approx. 2.718.

Here, the amount due is A = $8000 * e^(0.19 * 7). Can you evaluate this?

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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) $(0.99)^4$ .

5 0

3 years ago

Pls help me with the answer

Katarina [22]

Answer:

-27

-13

Step-by-step explanation:

-9*3=-27 -*+=-

-25/-5=5 -/-=+

7-(-3)=7+3=10 -(-)=+

-2+-11=-13 -+-=-

8 0

3 years ago

Hello!!:) <br> Please help me answer 1-6 will give brainlst <3

SOVA2 [1]

Answer:

1. 1/4

2. -3

3. 3

4. -3/2

5. -2

6. -3/4

Step-by-step explanation:

5 0

3 years ago

Use your calculator to select the best answer below:

bixtya [17]

Answer:

$-2\sqrt{a}$

Step-by-step explanation:

$\lim_{x \to a} \frac{a-x}{\sqrt{x} -\sqrt{a} } \\ =-\lim_{x \to a} \frac{x-a}{\sqrt{x} -\sqrt{a} } \\=-\lim_{x \to a} \frac{(\sqrt{x} -\sqrt{a})(\sqrt{x} +\sqrt{a})}{\sqrt{x} -\sqrt{a} } \\=- \lim_{x \to a} \sqrt{x} +\sqrt{a}\\=-2\sqrt{a}$

6 0

3 years ago

8 / 3 3/8 as a mixed number in simplest form

sukhopar [10]

Answer:

8/3 as a mixed number would be written as 2 2/3.

8 0

2 years ago