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DochEvi [55]
3 years ago
12

The probability that the number on the card is a perfect square is

Mathematics
1 answer:
amid [387]3 years ago
8 0

From 2 to 101 , the perfect square numbers are ,

  • 4 , 9 , 16 , 25 , 36 , 49 , 64 , 81 , 100 .

Total number of possible outcomes = 100.

Total number of favourable outcomes = 9 .

Hence ,

→ <u>P ( of getting perfect square ) = 9/10</u><u>0</u>

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I need help with Law of Sines; I posted pictures but I need help ASAPP
r-ruslan [8.4K]

Answer:

B = 26.407 degrees

C = 73.593 degrees

c = 30.196 units

Step-by-step explanation:

Use the law of sines

sin(B) / 14 = sin(80) / 31

B = sin-1( sin(80) / 31 x 14)

B = 26.407

C = 180 - 80 - 26.407

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c / sin(73.593) = 31 / sin(80)

c = 31 / sin(80) x sin(73.593)

c = 30.196

4 0
4 years ago
In a class of P students, the average of test scores is 70. In another class the average test scores is 92. When scores of the t
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So, since averages are defined as:

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So, since P are the total number of elements and P_k is the P_kth student. This is saying if we sum over each student's score and divide it by the number of students, we should get P, which is true.

So, using that logic, the other class can be represented as:

\frac{\sum_{k=1}^{N} N_k}{N}=70

We can take both of these equations and multiply them by N:

\sum_{k=1}^{P} P_k=70P

\sum_{k=1}^N N_k=92N

So, if we want to find the average of this we should add both our equations then divide by P+N, which is the number of all the students.

\frac{\sum_{k=1}^{P} P_k+\sum_{k=1}^{N}N_k}{N+P}=\frac{70P+92N}{N+P}

To make this simpler we can replace our LHS with 86, since that's the average of both classes combined.

86=\frac{92N+70P}{N+P} \implies\\ 86N+86P=92N+70P \implies \\ 16P=6N \implies \\ \frac{16P}{N}=6 \implies \\ \frac{P}{N}=\frac{6}{16}

Simplified we would have P/N=3/8.

7 0
3 years ago
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Answer:

Do PRT: 5009.31

Step-by-step explanation:

Princable: 5000

Rate: 2.5

Time: 10

Answer:

4 0
2 years ago
A local amateur ice skater estimates that the probability she will place first in the next regional competition is 0.44. what ar
saw5 [17]
 it depends on how many people are in the competition  
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Answer:

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Step-by-step explanation:

3 0
3 years ago
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