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lions [1.4K]
1 year ago
6

Helpp if you can tyy <3

Mathematics
1 answer:
bezimeni [28]1 year ago
3 0

Step-by-step explanation:

please mark me as brainlest

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A shipment of 11 printers contains 2 that are defective. Find the probability that a sample of size 2​, drawn from the 11​, will
svet-max [94.6K]

The required probability is \frac{36}{55}

<u>Solution:</u>

Given, a shipment of 11 printers contains 2 that are defective.  

We have to find the probability that a sample of size 2, drawn from the 11, will not contain a defective printer.

Now, we know that, \text { probability }=\frac{\text { favourable outcomes }}{\text { total outcomes }}

Probability for first draw to be non-defective =\frac{11-2}{11}=\frac{9}{11}

(total printers = 11; total defective printers = 2)

Probability for second draw to be non defective =\frac{10-2}{10}=\frac{8}{10}=\frac{4}{5}

(printers after first slot = 10; total defective printers = 2)

Then, total probability =\frac{9}{11} \times \frac{4}{5}=\frac{36}{55}

7 0
3 years ago
1985 x 99 I already know the answer: 196515
worty [1.4K]

Answer:

oh well thanks

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIST. PLEASE HELP.​
tankabanditka [31]

Answer:

0

Step-by-step explanation:

Please refer to the image attached with this answer. Assuming our triangle to be ΔABC and Line AD meeting BC at D.

As we are given that side b = side c

The angle subtended by them ∠B and ∠C must be equal . Let us assume them to be x each . hence

x + x + 52° +31° = 180°

2x + 73° = 180°

2x = 180°- 73°

2x = 107 °

x = 53.5°

Hence in ΔACD

x+ 31°+∠2= 180°

53.5°+31°+ ∠2 = 180°

∠2=180°-84.5°

∠2=95.5°

Also

∠1 + ∠2 = 180°

∠1 + 95.5° = 180°

∠1 = 180°-95.5°

∠1 =84.5°

Now applying Sine rule in ΔABD

\frac{\sin 52}{12}=\frac{\sin 84.5}{c}

\frac{0.7886}{12}=\frac{0.9953}{c}

c=\frac{0.9953 \times 12}{0.7886}

c=15.14

Hence we have c as 15.14

as we are given that side c = side b , b=15.14

The properties of any triangle says that the sum of two sides of any triangle is always greater than the third side. Hence

a<b+c

12+2x-6<15.14+15.14

6+2x<30.28

2x<30.28-6

2x<24.28

x<12.14

also side a must be greater than 0

12+2x-6>0

6+2x>0

2x>-6

x>-3

Hence the range of x will be

-3 <x < 12.14

3 0
3 years ago
Find the solution of x – 13 = 25, and verify your solution using substitution.
motikmotik

Answer:

x = 38

Step-by-step explanation:

x-13 = 25

Add 13 to each side

x-13+13 = 25+13

x = 38

Check

38-13 = 25

25=25

8 0
3 years ago
CAN SOMEONE HELP PLEASE!!
Illusion [34]
1. Distributive Property.
2.Congruence Property.
3.Subtraction Property.
4.Division Property.
3 0
3 years ago
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