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gladu [14]
3 years ago
14

Box 1 contains 1000 lightbulbs of which 10% are defective. box 2 contains 2000 lightbulbs of which 5% are defective. (a) suppose

a box is given to you at random and you randomly select a lightbulb from the box. if that lightbulb is defective, what is the probability you chose box 1? (b) suppose now that a box is given to you at random and you randomly select two light- bulbs from the box. if both lightbulbs are defective, what is the probability that you chose from box 1?
Mathematics
1 answer:
madreJ [45]3 years ago
6 0

hhhhhhhhhhhhhhhhhhhhhhhhh

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Need help on 2, b, c, and 3 please.
Svetlanka [38]
A/Wall if you have 20 and 30 that box is missing # so you will need to times and you will get something like this 20×30=60 and that's the missing #

B/Its going to be about 768 so you need to times and if you don't get 768


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Stels [109]
I am pretty sure the answer is B
5 0
3 years ago
1. 15 is what percent of 40?<br> 2. 15 is 30% of what number?<br> 3. What number is 120% of 70?
Elis [28]
<span>1. 15 is what percent of 40?
   15 * 100 / 40 = 37.5
answer is </span><span>15 is 37.5% of 40
</span><span>
2. 15 is 30% of what number?
 15 / 0.3 = 50
answer : </span>15 is 30% of 50<span>

3. What number is 120% of 70?
120% = 1.2
1.2 + 1 = 2.2

2.2 * 70 = 154
answer: 154</span> is 120% of 70?<span>


</span>
5 0
3 years ago
An arithmetic
Sunny_sXe [5.5K]

Answer:

an = 7.5 - 5.5(n - 1).

Step-by-step explanation:

The common difference d = -5.5.

The first term is given as 7.5.

Explicit formula is

an = a1 + (n - 1)d

= 7.5 + (n - 1)-5.5

= 7.5 - 5.5(n - 1)

8 0
3 years ago
Solve for y. 1/4y+3=-5x
alexgriva [62]

Answer:

y=-20x-12

Step-by-step explanation:

4 0
2 years ago
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