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elixir [45]
3 years ago
9

Evaluate x + 2.2 when x= 7.5

Mathematics
2 answers:
ohaa [14]3 years ago
8 0
The finale answer is 9.7
Oxana [17]3 years ago
6 0

Answer:

9.7

Step-by-step explanation:

7.5 +2.2 = 9.7

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A bridge hand is made up of 13 cards from a deck of 52. Find the probability that a hand chosen at random contains at least .
Tema [17]

Answer:

10%

Step-by-step explanation:

Since the question is not complete, I will be solving for probability of 3 9s

To solve this, we would be using the principle of combination, and thus

A deck of 52 hours has 4 nines, the probability that it contains at least 3 9s is mathematically represented by the equation.

P ( x ≥ 3 ) = ( 48 C 10 · 4 C 3 ) / ( 52 C 13 ) + ( 48 C 9 · 4 C 4 ) / ( 52 C 13 )

Remember I told us were going to be using the principle of combination. Well then

nCr = n!/r!(n - r)!

Now, applying the above stated formula to the equation, we have

48C10 = 48!/10!(38!)

4C3 = 4!/3!(1!)

52C13 = 52!/13!(39!)

48C9 = 48!/9!(39!)

4C4 = 4!/4!(0!)

Solving for each independently, we find that

= 0.0412 + 0.588 = 0.1

4 0
3 years ago
Can someone please help I don’t know which one is it please help me
gavmur [86]

Answer:

m= - 3

b= 3

Step-by-step explanation:

5 0
3 years ago
What is the volume of a cylinder tank with diameter of 50cm and height of 80cm
stepladder [879]

Answer:

12566.37061435917

or

4000π

Step-by-step explanation:

the equation is 50π×80

this is because you have to find the area of the circle which is diameter times pi and then you multiply that by the height of the cylinder

5 0
3 years ago
the movie shop sells posters for $7 dvd for $15 and cd for $9 write an expression to represent the total cost for 2 posters d dv
Nat2105 [25]
Try (7x2)+d+c
I hope this helped?
If not maybe, 14+d+c?
3 0
3 years ago
Có ai biết làm toán cao cấp 2 phần đại học ko , help me:((
Viefleur [7K]

Answer: Sorry i only speak english

Step-by-step explanation:

5 0
3 years ago
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