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padilas [110]
3 years ago
8

The Probability that one bulb is red and one is yellow?

Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
6 0

Answer:

\frac{11}{39}

Step-by-step explanation:

Given,

The number red bulb = 11,

Yellow bulb = 9,

Purple = 7,

Total bulbs = 11 + 9 + 7 = 27,

If two bulbs are taken,

Then, the probability that one bulb is red and one is yellow

=\frac{^{11}C_1\times ^9C_1}{{27}^C_2}

=\frac{11\times 9}{\frac{27!}{2!\times 25!}}

=\frac{99}{\frac{27\times 26}{2}}

=\frac{99}{27\times 13}

=\frac{11}{39}

inna [77]3 years ago
5 0
I have a solution here where:

<span>A bag of 27 Tulip bulbs contain 10 red tulip bulbs, 8 Yellow, and 9 purple tulip bulbs. 

</span>Red- 
10/27= .37 
times 100 gives percentage 
=37% 

Yellow- 
8/27= .3 
times 100 gives percentage 
<span>30%
</span><span>
You can use my solution in answering the question on your own!

I hope my answer has come to your help. Have a nice day ahead and may God bless you always!



</span>
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sal works for a computer repair shop. he has determines that customers pay on average $150 for each computer they bring in. He p
Effectus [21]

Answer:

The answer is :

sal must repair 320 computers in a year to break even.

Step-by-step explanation:

The break even point in a business is the point at which the total costs and the total revenue in a business are equal.

In order to calculate sal's break even point, we will first of all calculate the total costs incurred during the business year, then using the selling price (repairing price), we will calculate how many computers will be repaired to reach the incurred cost. This is done as follows:

Rent per month = $2,000

∴ Rent for a year (12 months) = 2,000 × 12 = $2,400

Cost incurred in fixing each computer = $75

Priced charged for fixing each computer = $150

Next, since we know that sal requires $75 in parts and labor to fix a computer, we will calculate the net price charged for each computer fixed as follows:

Net price charged = Priced charged for fixing each computer - Cost incurred in fixing each computer

Net price charged = 150 - 75 = $75

Finally to calculate the break even point, we know the net income (net price charged) for each computer and the costs of rent for each year, therefore, we will divide the cost incurred by the net price charged, as follows:

break even point = cost of rent for one year ÷ net price charged

break even point = 24,000 ÷ 75 = 320 computers.

Therefore, by the time sal repairs 320 computers during the year, he must have covered the costs incurred in operations, every additional repair, becomes a profit.

3 0
3 years ago
Find the 10th term of the geometric sequence whose common ratio is 2/3 and whose first term is 3.
Sergeu [11.5K]

Answer:

\frac{512}{6561}

Step-by-step explanation:

1) if according to the condition a₁=3 and r=2/3, then a₁₀ can be calculated as:

a₁₀=a₁*r⁹;

2) according  to the rule above:

a₁₀=3*(2/3)⁹=512*3/(6561*3)=512/6561.

5 0
2 years ago
Wires are attached to a pole to make it more secure. The diagram shows one of those wires having a length of 220 feet. The angle
LuckyWell [14K]
The wire, the pole and the segment joining the leg of the pole to the wire in the ground form a right triangle whose hypotenuse is the wire, and the side opposite to the angle 36° is the pole.

By right triangle trigonometry, sin36°=(opposite side)/(hypotenuse.)

Substituting, we have 0.588=(opposite side)/220, thus the length of the opposite side, which represents the length of the pole, is 

                                       0.588*220 ft=129.3 ft
3 0
3 years ago
Find the volume of a cone with a radius of 12 units and a height of 6<br> units.
svlad2 [7]
The volume is 905.32 i believe

12(12)=144, 144(3.14)=452.16, 452.16(6)=2712.96, 2712.96/3=904.32
7 0
3 years ago
Evaluate the expression:<br><br> x^2+2x−xy when x = 250 and y = −120
NikAS [45]

Answer:

33000

Step-by-step explanation:

Substituting 250 for x and -120 for y, we get:

(250)^2 + 2(250) - (250)(120)  =  62500 + 500 - 30000, or

32500 + 500, or 33000

5 0
3 years ago
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