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3 years ago

10

What is the area of this polygon

1 answer:

bogdanovich [222]3 years ago

3 0

Answer:

42cm²

Step-by-step explanation:

7×5= 35

7×2/2=7

35+7=42cm²

only applies if the grid is 1×1 cm²

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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

Add.<br> -6.3+(-9.7)<br> - 6.3+(-9.7) =<br><br> (Type an integer or a decimal.)

vlada-n [284]

7.6992 buds no sis
BDIS yes yes teye what they said

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2 years ago

What is the substitution <br> 3x-5y=11;x=3y+1

nikitadnepr [17]

Substitute 3x+1 for x. Then solve from there

3 0

3 years ago

Read 2 more answers

An arithmetic sequence is given below.

Mashcka [7]

Given that $a_1=24$ and $a_2=17$ , if $a_n$ is an arithmetic sequence, then the common difference between successive terms is $d=a_2-a_1=17-24=-7$ .

You then have

$a_2=a_1+d$
$\implies a_3=a_2+d=a_1+2d$
$\implies a_4=a_3+d=a_1+3d$
$\implies \cdots\implies a_n=a_{n-1}+d=\cdots=a_1+(n-1)d$

So the explicit formula for the $n$ th term is

$a_n=24-7(n-1)$

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3 years ago

1. Add an ordered pair to the table so that the representation is NOT a function. Briefly explain why the

BlackZzzverrR [31]

Answer:

beesechurger

Step-by-step explanation:

everyone needs to know about the almighty beesechurger

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2 years ago