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fomenos
4 years ago
6

Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assures you that 13

of the 57 boxes on the shelf have the secret decoder ring. The other 44 boxes on the shelf have a different gift inside. If you randomly select two boxes of cereal from the shelf to purchase, what is the probability that BOTH of them have the secret decoder ring?
Mathematics
2 answers:
MissTica4 years ago
6 0

Answer:

13/266

Step-by-step explanation:

13C2/57C2 = 13/266

Alternately,

13/57 × 12/56 = 13/266

13/266 = 0.04887

yulyashka [42]4 years ago
4 0

Answer:

Please Mark as Brainlist**

169/2209 OR 7.22%

Step-by-step explanation:

[probability that both have the secret decoder ring]=(13/47)*(12/46)

[probability that both have the secret decoder ring]=(156/2162)

[probability that both have the secret decoder ring]=0.0722-------> 7.22%

the answer is 0.0722 (7.22%)

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(sqrt(6))/(8+\sqrt(10))
valkas [14]

Answer:

\frac{4\sqrt{6}-\sqrt{15}}{27}

Step-by-step explanation:

\frac{\sqrt{6} }{8+\sqrt{10} } \\\\\mathrm{Multiply\:by\:the\:conjugate}\:\frac{8-\sqrt{10}}{8-\sqrt{10}}\\=\frac{\sqrt{6}\left(8-\sqrt{10}\right)}{\left(8+\sqrt{10}\right)\left(8-\sqrt{10}\right)}\\\\\sqrt{6}\left(8-\sqrt{10}\right)=8\sqrt{6}-2\sqrt{15}\\\left(8+\sqrt{10}\right)\left(8-\sqrt{10}\right)=54\\\\=\frac{8\sqrt{6}-2\sqrt{15}}{54}\\\\\mathrm{Factor}\:8\sqrt{6}-2\sqrt{15}:\quad 2\left(4\sqrt{6}-\sqrt{15}\right)\\\\=\frac{2\left(4\sqrt{6}-\sqrt{15}\right)}{54}\\

\mathrm{Cancel\:the\:common\:factor:}\:2\\\\=\frac{4\sqrt{6}-\sqrt{15}}{27}

5 0
3 years ago
2. The student council is sponsoring a concert as
Jlenok [28]

Answer:

80 adults must addent to make a complete $1,000

Step-by-step explanation:

You start with the students, $3 for each and 200 of them attend. 3x200=600 dollars in total. Then you would subtract 600 from 1,000. Next you will do the adults, 5x80=400 (The "leftover" cash) $5 for each times 80 adults will be $400 in total.

8 0
3 years ago
Rewrite in simplest form<br> 1/8 divide by 3/4
nata0808 [166]
Hello there!

1/8 ÷ 3/4

= 1/8 * 4/3

= 1/24/4

=1/96

= 0.01

I hope this helps!
5 0
4 years ago
if someone were to drive 500 miles, and gas were 1.99 per gallon and the person used to get 30 miles per gallon, how much money
butalik [34]
33.17 ,,,,500/30 and then times by 1.99
5 0
3 years ago
Perform the operation : Multiply 0.03(4 − x) by 100.
shutvik [7]

Answer:

On multiplying the equation by 100 we will get 12-x

Step-by-step explanation:

Given data in the question:-

0.03(4-x)

We have to multiply the equation by 100.

Solution:-        

We can write 0.03 as 3/100

(3/100)(4-x)*100\\3(4-x)\\12-x

Hence the answer is 12-x.

5 0
3 years ago
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