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Naily [24]
3 years ago
10

Answer fast plzzzzzz

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
6 0

Answer:

12/25

Step-by-step explanation:

12+13=25

There are 12 girls.

12/25

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Simplify: (-3y5)3 <br>-9y8 <br>-9y15<br> -27y8 <br>-27y15​
Amiraneli [1.4K]

Answer:

(-3y5)3

-9y15

Step-by-step explanation:

prove me wrong

6 0
3 years ago
The probability that a student has a Visa card (event V) is .63. The probability that a student has a MasterCard (event M) is .1
Aleksandr-060686 [28]

Answer:

a)  The probability that a student has either a Visa card or a MasterCard is 0.71.  

b) V and M are not independent.

Step-by-step explanation:

Given : The probability that a student has a Visa card (event V) is 0.63. The probability that a student has a MasterCard (event M) is 0.11. The probability that a student has both cards is 0.03.

To find :

a) The probability that a student has either a Visa card or a MasterCard ?

b)  In this problem, are V and M independent ?

Solution :

The probability that a student has a visa card(event V) is P(V)= 0.63

The probability that a student has a MasterCard (event M) is P(M)= 0.11

The probability that a student has both cards  is P(V \cap M)=0.03

a) Probability that a student has either a Visa card or a Master Card is given by,

P(V \cup M) = P(V) + P(M) - P(V\cap M)

P(V \cup M) = 0.63+ 0.11- 0.03

P(V \cup M) =0.74- 0.03

P(V \cup M) =0.71

The probability that a student has either a Visa card or a MasterCard is 0.71.

b) Two events, A and B, are independent if P(A\cap B)=P(A)P(B)

For V and M to be independent the condition is satisfied,

P(V\cap M)=P(V)P(M)

Substitute the values,

0.03=0.63\times 0.11

0.03\neq 0.0693

So, V and M are not independent.

6 0
3 years ago
Katie earns $8 per hour at her paint job. Her boss gives her a raise of 15%. What is Katie’s hourly wage after her raise? How mu
kodGreya [7K]

Answer: $9.20 hourly 230 dollars for 25 hour work week

Step-by-step explanation:

7 0
3 years ago
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There are 39.37 inches in 1 meter. How many inches are in 8 · 104 meters?
katrin2010 [14]

Step-by-step explanation:

1meter = 39.37inches \\ 8.104meters = (39.37 \times 8.104)inches \\  = 319.05448inches

3 0
2 years ago
Evaluate the following expression.<br> 1/5^-2
Romashka [77]
This is how the whole equation goes:
1/x^-a = x^a
So, 1/5^-2 is the same as 5^2, which is 25. 
8 0
2 years ago
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