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hichkok12 [17]
3 years ago
9

A box contains seven 40-W bulbs, four 60-W bulbs, and six 75-W bulbs. If bulbs are selected one by one in random order, what is

the probability that at least two bulbs must be selected to obtain one that is rated 75 W? (Round your answer to three decimal places.)
Mathematics
1 answer:
OLEGan [10]3 years ago
3 0

Answer: 2.833

Step-by-step explanation:

Add up the amount of light bulbs: (7+6+4).

Divide 17 (^the sum^) by 6 (the amount of 75 watt bulbs).

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Check this please I need grade
Elden [556K]
All good and for number 6 you should draw an acute angle
3 0
4 years ago
Delana also bought 3 bags of pencils with 12 pencils in each bag.When the party began, she found that 13 of the pencils were bro
Ymorist [56]

Answer:

20

Step-by-step explanation:

3*12=36-13=20

5 0
3 years ago
After a class party, Hugo had 3/5 of a bag of candy left
Ivahew [28]

Answer:

Each person will get 3/20 of the bag of candies

Step-by-step explanation:

3/5 divided by 4 = 3/5 * 1/4 = 3/20

Please mark as brainliest if the answer is correct!

Also, feel free to tell me if my answer is wrong, or you have more questions. :D

4 0
3 years ago
Help asap!! 15 points!!
adoni [48]

Answer:

a) y = -500x + 130,000

b)67,500 gallons remaining

c) 260 hours

Step-by-step explanation:

Since water is being removed at a rate of 500 gallons per hour, the slope would be a negative.

a) y = -500x + 130,000

For<u> part b</u> input 125 for x:

y = -500(125) + 130,000

y = 67,500

There are 67,500 gallons remaining

For part c we are solving for the x intercept

0 = -500x + 130,000

Subtract 130,000 from both sides

-130,000 = -500x

x = 260

It will take 260 hours for the pool to completely drain

8 0
3 years ago
Identify all of the root(s) of g(x) = (x2 + 3x - 4)(x2 - 4x + 29)
vichka [17]

Answer:

x=-4,1,2+5i,2-5i

Step-by-step explanation:

Given is an algebraic expression g(x) as product of two functions.

Hence solutions will be the combined solutions of two quadratic products

g(x) = (x^2 + 3x - 4)(x^2 - 4x + 29)\\

I expression can be factorised as

(x+4)(x-1)

Hence one set of solutions are

x=-4,1

Next quadratic we cannot factorize

and hence use formulae

x=\frac{4+/-\sqrt{16-116} }{2} =2+5i, 2-5i

5 0
3 years ago
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