All categories

3 years ago

Math help!!! will be marking brainly

Mathematics

1 answer:

Vilka [71]3 years ago

4 0

$|\Omega|=3+5+5+7=20\\|A|=5\\\\P(A)=\dfrac{5}{20}=\dfrac{1}{4}$

You might be interested in

The bank does not charge a fee for cashing checks as long as members keep a balance, b, of at least $500 in their checking accou

IrinaVladis [17]

Answer:

b ≥ 500

Step-by-step explanation:

since the balance has to be at least 500, b has to be grater than or equal to 500, so b ≥ 500

7 0

3 years ago

Read 2 more answers

HELPPP!!!!! Plzzzz!!

Lina20 [59]

Given:

Cards labelled 1, 3, 5, 6, 8 and 9.

A card is drawn and not replaced. Then a second card is drawn at random.

To find:

The probability of drawing 2 even numbers.

Solution:

We have,

Even number cards = 6, 8

Odd numbers cards = 1, 3, 5, 9

Total cards = 1, 3, 5, 6, 8 and 9

Number of even cards = 2

Number of total cards = 6

So, the probability of getting an even card in first draw is:

$P_1=\dfrac{\text{Number of even cards}}{\text{Number of total cards}}$

$P_1=\dfrac{2}{6}$

$P_1=\dfrac{1}{3}$

Now,

Number of remaining even cards = 1

Number of remaining cards = 5

So, the probability of getting an even card in second draw is:

$P_2=\dfrac{\text{Number of remaining even cards}}{\text{Number of remaining total cards}}$

$P_2=\dfrac{1}{5}$

The probability of drawing 2 even numbers is:

$P=P_1\times P_2$

$P=\dfrac{1}{3}\times \dfrac{1}{5}$

$P=\dfrac{1}{15}$

Therefore, the probability of drawing 2 even numbers is $\dfrac{1}{15}$ . Hence, the correct option is (b).

5 0

3 years ago

Can you help me find the slope! (30 points)

elena-s [515]

Answer:

1/5

Step-by-step explanation:

change of y over change of x will get you 1.5/7.5 which is 0.2 or 1/5

5 0

3 years ago

Read 2 more answers

Please answer correctly !!!!!!!!!! Will mark brainliest !!!!!!!!!!!!

MArishka [77]

Answer:

- 18y = 1

Step-by-step explanation:

Adding the 2 equations term by term on both sides gives

(- 5x + 5x) + (- 9y - 9y) = (3 - 2), that is

0 + (- 18y) = 1

- 18y = 1

7 0

3 years ago

The variables xx and yy vary directly. use the values to find the constant of proportionality, kk. then write an equation that r

Sergeu [11.5K]

Direct variation means that changes in x will result to changes in y. If x increase, y also increases and vice versa.

y = kx
k = y / x

y = 45 ; x = 40

k = 45/40
k = 1.125

y = 1.125x

y will increase by 1.125 interval of x.

5 0

3 years ago

Read 2 more answers