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3 years ago

One person is selected at random from a class of 20 males and 13 females. Find the odds against selecting a male and a female

Mathematics

1 answer:

spin [16.1K]3 years ago

7 0

Answer:

Odds for male= 1.538

Odds for female = 0.65

Step-by-step explanation:

The question is asking for odds, not a probability. A probability shows how much the chance for the event to happen, so it can be expressed as a percentage. Odds show how the event more likely to happen compared to the chance it did not happen. If an event has a 90% probability, the odds will be 90:10= 9

In this case, the odds of selecting a male will be:

number of male : number of female= 20:13 = 1.538

The odds of selecting a female will be

number of female : number of male = 13/20 = 0.65

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Which set of lengths are the side lengths of a right triangle? (9,15,17) (14,23,25) (20,30,40) (15,36,39)

goldfiish [28.3K]

Answer:

(15, 36, 39)

Step-by-step explanation:

Using pythagoreas formula: A^2 * B^2 = C^2

so a=15, b=36, c=39

15^2+36^2=39^2

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3 years ago

For the following quadratic equation, find the discriminant.<br> x^2+ 10x + 44 = 0

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Answer:

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3 years ago

The basketball team scored 82 points from 2- points anf 3-points baskets. They make 38 baskets altogether. Let a represent the n

dexar [7]

Answer:

The System of linear equations are:

$2a+3b = 82$

$a+b=38$

Step-by-step explanation:

Here, a represents the number of 2-points and b represent the number of 3-point basket.

As per the statement:

The basketball team scored 82 points from 2- points and 3-points baskets.

⇒ $2a+3b = 82$

It is also given that: They make 38 baskets altogether.

⇒ $a+b=38$

therefore, the system of linear equations are:

$2a+3b = 82$

$a+b=38$

7 0

3 years ago

Read 2 more answers

In a certain Algebra 2 class of 26 students, 5 of them play basketball and 12 of them play baseball. There are 12 students who p

loris [4]

Answer: $\dfrac{7}{13}$

Step-by-step explanation:

There are only two games basketball and baseball.

Any student who plays could play basketball or baseball.

Given that there are $26$ students in total.

Given that there are $12$ students who don't play any game at all.

So,there are $26-12=14$ students who play play some baseball or basketball.

$Probability=\frac{\text{number of favourable outcomes}}{\text{total number of outcomes}}$

The required probability is $\frac{14}{26}=\frac{7}{13}$

6 0

3 years ago

Translate the sentence into an equation.

Andreas93 [3]

<h2>Translating Sentences into Equations</h2>

A key part of this is recognizing certain words to change into operations or numbers:

<em>quotient</em> = divide
<em>three more</em> = add 3
<em>'a/the number' </em>= use a variable (in this case, it's <em>w</em>)

<h2>Solving the Question</h2>

We're given:

Three more than the quotient of a number and 7 equals 6
⇒ 'the quotient of a number and 7' tells us we divide <em>w</em> by 7:
Three more than $\dfrac{w}{7}$ equals 6
⇒ 'three more than' means we add 3 to the fraction:
$\dfrac{w}{7}+3$ equals 6
$\dfrac{w}{7}+3=6$

<h2>Answer</h2>

$\dfrac{w}{7}+3=6$

5 0

2 years ago