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Mathematics

2 answers:

Nonamiya [84]3 years ago

7 0

The correct answer would be (2,3) because the line is facing upwards slanted at the right meaning positive. And following the points that are touched on the line would give you (3,2)

In-s [12.5K]3 years ago

4 0

Answer:

2,-4

Step-by-step explanation:

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What is the area of the parallelogram shown below in square units? 9 units 20 units

tatyana61 [14]

Answer

160

Step-by-step explanation:

3 0

3 years ago

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In a certain Algebra 2 class of 30 students, 14 of them play basketball and 10 of them play baseball. There are 14 students who

Veseljchak [2.6K]

Answer:

In a certain Algebra 2 class of 30 students, 22 of them play basketball and 18 of them play baseball. There are 3 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?

I know how to calculate the probability of students play both basketball and baseball which is 1330 because 22+18+3=43 and 43−30 will give you the number of students plays both sports.

But how would you find the probability using the formula P(A∩B)=P(A)×p(B)?

Thank you for all of the help.

That formula only works if events A (play basketball) and B (play baseball) are independent, but they are not in this case, since out of the 18 players that play baseball, 13 play basketball, and hence P(A|B)=1318<2230=P(A) (in other words: one who plays basketball is less likely to play basketball as well in comparison to someone who does not play baseball, i.e. playing baseball and playing basketball are negatively (or inversely) correlated)

So: the two events are not independent, and so that formula doesn't work.

Fortunately, a formula that does work (always!) is:

P(A∪B)=P(A)+P(B)−P(A∩B)

Hence:

P(A∩B)=P(A)+P(B)−P(A∪B)=2230+1830−2730=1330

7 0

2 years ago

Let x represents the amount of a transaction and let f(x) represents the amount Isabel is charged for the transaction write a fu

Svetradugi [14.3K]

Answer:

$f(x) = \frac{Px}{100}$

Step-by-step explanation:

Let P% of the transaction amount is charged in the account.

So, if the transaction amount is x, then the charge for that transaction will be

$\frac{ Px }{ 100 }$ .

Therefore, if f(x) represents the amount Isabel is charged for the transaction then we can write $f(x) = \frac{ Px }{ 100 }$ , where P% is the rate of charge. ( Answer )