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2 years ago

Idk how to solve these questions

Mathematics

2 answers:

Anuta_ua [19.1K]2 years ago

5 0

Of means multiply

3/5 *n=30

3/5 5/3 cancels than you do 30 *5/3 =50

The answer is 50 you can check your answer by doing 3/5 *50=150/5 or 30 so it's correct .

BartSMP [9]2 years ago

4 0

#is5 how I got the answer well it say 10times a number so u know u gotta multiply 10by a number ,then it said increase by 9 there it then said the number was 59 so I said 10times 5 +9=59 in other words 10x +9=59
first your gonna bring over the 9 to the other side of the equation so ur gonna have 10x=59-9cause if it was positive first then the sign changed to negative when u brought it over to the other side so now u subtract 9from 59and u get 50so now u got 10x =50 so now ur gonna divide both sides by 10to get the x by itself so now on one side u got 10÷19x and the other side 50÷10 now u have x=5

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2 years ago

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Event A:

Probability that a student has a Visa card.

Event B:

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We have that:

$A = a + (A \cap B)$

In which a is the probability that a student has a Visa card but not a MasterCard and $A \cap B$ is the probability that a student has both these cards.

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$B = b + (A \cap B)$

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$A = 0.6, B = 0.3$

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We have that $B = 0.3$ .

$0.3 = b + (A \cap B)$

However, b is a probability, which means that it cannot be negative. So no, P(A ∩ B) cannot be 0.5. It can, at most, be 0.3.

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3 years ago