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katrin [286]
3 years ago
15

Talia tossed a penny many times; she got 40 heads and 60 tails. What is the probability of Talia getting heads?

Mathematics
1 answer:
disa [49]3 years ago
8 0
Her probability is 4/10 times.
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Find the square root of the fraction . 64/100
Artyom0805 [142]
It would be 8/10 because you just take the square root of the denominator and the numerator
3 0
4 years ago
A wheel has a diameter of 70 cm and completes a revolution in 0.25 seconds at top speed
prohojiy [21]

Answer:

  • 8π radians/second
  • 527.8 meters

Step-by-step explanation:

A) The angular velocity is the ratio of angular distance to time:

  ω = 1 revolution / (0.25 s) = (2π radians)/(0.25 s)

  ω = 8π radians/second

__

B) The arc length is ...

  s = rθ = rωt

  s = (35 cm)(8π rad/s)(60 s) = 16,800π cm

  s ≈ 52779 cm = 527.79 m

The wheel travels about 527.8 meters in one minute.

6 0
3 years ago
Evaluate the given expression. Subscript 5 Baseline P Subscript 2 a. 40 c. 25 b. 32 d. 20
Leto [7]

Answer:

d. 20

Step-by-step explanation:

The given question implies 5 permutation 2, i.e _{5}P_{2}.

But,

_{n}P_{r} = \frac{n!}{(n - r)!}

So that for _{5}P_{2}, n = 5 and r = 2.

_{5}P_{2} = \frac{5!}{(5 - 2)!}

     = \frac{5!}{3!}

    = \frac{5*4*3*2!}{3*2!}

Cancel out 3 and 2 with respect to the numerator and denominator.

_{5}P_{2} = 5 * 4

     = 20

Therefore,

_{5}P_{2} = 20

So that the correct option is D.

6 0
3 years ago
Read 2 more answers
Is this true for false?
elena-14-01-66 [18.8K]

Answer:

i believe true

Step-by-step explanation:

sorry if wrong

4 0
3 years ago
The area of a square is defined by, A(x) = x 2 - 6x + 9. What is the length of a side of the square?
Dmitriy789 [7]
A9x)  = x^2 - 6x + 9  = (x - 3)^2

length of a side = x - 3 
8 0
3 years ago
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