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lapo4ka [179]
3 years ago
12

A company has 200 machines. Each machine has 12% probability of not working.

Mathematics
1 answer:
Eduardwww [97]3 years ago
4 0

1) This probability is given by

... C(40,5)·0.12⁵·0.88³⁵ ≈ 0.18665 . . . . . where C(n, k) = n!/(k!(n-k)!)

2) This probability is given by

... 0.88⁴⁰ ≈ 0.00602

3) This is the complement of the probability that all have failed.

... 1 - 0.12⁴⁰ ≈ 1.0000

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Need help asap plss.
yanalaym [24]

Answer:

EF = 20 cm

Step-by-step explanation:

Here, we want to find the length of EF

To do this, we use the principle of similar triangles

The similar triangles we are considering here will be ;

FEA and FBD

when two triangles are similar, the ratio of their corresponding sides are equal

Let us calculate DC first

we can use Pythagoras’ theorem here and it is that the square of the hypotenuse equals the sum of the square of the two other sides

Using the triangle EDC

15^2 = 12^2 + DC^2

DC^2 = 225-144

DC^2 = 81

DC = 9

So the entire length of BD is 9 + 12 = 21 cm

Thus, we have it that;

Let EF be x

so DF = 15 + x

Hence;

BD/DF = AE/EF

21/15+x = 12/x

21x = 12(15 + x)

21x = 180 + 12x

21x-12x = 180

9x = 180

x = 180/9

x = 20 cm

EF = 20 cm

6 0
2 years ago
PLZ HELPPPP
Zolol [24]

Answer:

Step-by-step explanation:

3x-4<8

3x<12

x<4

2x+2>4

2x>2

>1

6 0
3 years ago
| 2(4+6) = how do I solve this?​
podryga [215]

Answer:

20

Step-by-step explanation:

You use the distributive property.

Distribute the 2 to whatever is inside the parentheses. (You will multiply)

4×2=8

2×6=12

Substitute the answers above into the parentheses.

(8+12)=20

7 0
3 years ago
The first class had a kids in it, the second had b kids in it, and the third class had c kids in it. Kids from all three classes
kramer
(a+b+c)/2. this is your answer. if it had the numbers i would solve it fully, but it only has variables.
3 0
3 years ago
Read 2 more answers
Mei Mei invested $1700 in an account that pays 3% interest compounded annually.
algol [13]

Answer:

$2728

Step-by-step explanation:

Use compound interest formula:

A = P(1 + \frac{r}{n})^{nt}

P = 1700, r = 0.03, n = 1, t = 16

Plug in numbers:

A = 1700(1 + \frac{0.03}{1})^{(1)(16)}

Simplify:

A = 1700(1.3)^{16

Use calculator:

A = 2728

4 0
2 years ago
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