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lyudmila [28]
3 years ago
15

Suppose there are n students in a class what is the probability at least two students have same birthday

Mathematics
2 answers:
vitfil [10]3 years ago
5 0
I don't have enough info to solve this
Katyanochek1 [597]3 years ago
5 0
P(at least two have same birthday) =
1 - (1/2)^(n).

Since no specific number of students is given, we only get an expression.
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inn [45]
Answer is 100 as the next would be 200
7 0
2 years ago
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Artyom0805 [142]
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7 0
2 years ago
jane is twice as old as Barbara. Michael is 7 years older than Jane. If Michael is 21, which equation could be used to find Barb
dedylja [7]

Step-by-step explanation:

J = 2b

M = J + 7

M = 21

J = 21 - 7

J = 14

B = 7

<em>Equation:</em>

If M is J+7, so then J = 21-7. J is 2*b, so 2*b = 21-7. Then you subtract and divide.

3 0
2 years ago
The diameter of circle x is 15 centimeters.
rjkz [21]

Answer:

15.7 cm

Step-by-step explanation:

Circle x's circumference is 15 * pi = 47.1 cm

Circle y's is 20 * pi = 62.8

The difference is 62.8 - 47.1 = 15.7

5 0
2 years ago
If f(x) = -x + 5 and g(x) = x^2, what is (g*f)(-1)
sasho [114]

Answer:

6

Step-by-step explanation:

(g × f)(x) = g(x) × f(x) = x²(- x + 5)

To evaluate (g × f)(- 1) substitute x = - 1 into the product

x²(- x + 5)

= (- 1)²(- (- 1) + 5)

= 1(1 + 5)

= 1 × 6 = 6

5 0
3 years ago
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