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lisabon 2012 [21]

3 years ago

5

What is the approximate solution of this system of equations?

1 answer:

Effectus [21]3 years ago

3 0

Hmm, I'd say it's the first option.

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How do you solve this?

Katarina [22]

So hmm notice the first picture, that's the "inscribed angle theorem", as you'd know

now, notice angle 2 in yours on the second picture

8 0

2 years ago

Ayyyy ayudaa <br> ~conversión de fracciones y decimales ~

Ira Lisetskai [31]

oh thats easy it is hi

7 0

2 years ago

List all x intercepts for y= -cos(1/2x + 1/5 pi) on the interval [-2/5pi,4pi]

Dahasolnce [82]

- cos ( 1/2 x + 1/5 π ) = 0 ( and because if cos α = 0, α= π/2 + k π, k ∈ Z )
1/2 x + π/5 = π/2 + k π, k ∈ Z
1/2 x = π/2 - π/5 + k π / * 2
x = π - 2π/5 + 2 k π
x = 3/5 π + 2 k π = 0.6 π + 2 k π
Answer:
If k = 0: x 1 = 0.6 π = 3π/5
k = 1 : x 2 = 2.6 π = 13π/5

3 0

3 years ago

Read 2 more answers

Which of the following are irrational numbers? Select all that apply. [Look at the photo to see the answer choices.]

AlexFokin [52]

The answers are b., d., and e.

4 0

2 years ago

If copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a yea

Natasha2012 [34]

Answer:

$P(Atleast\ 1) = 0.9999992$

Step-by-step explanation:

Given

$p = 3\%$ --- rate of hard disk drives failure

$n = 4$ --- number of hard disk drives

<em>See comment for complete question</em>

Required

$P(Atleast\ 1)$

First, calculate the probability that the none of the 4 selected is working;

$P(none) = p^4$

$P(none) = (3\%)^4$

$P(none) = (0.03)^4$

Using the complement rule, the probability that at least 1 is working is:

$P(Atleast\ 1) = 1 - P(none)$

This gives:

$P(Atleast\ 1) = 1 - 0.03^4$

$P(Atleast\ 1) = 0.9999992$

5 0

2 years ago