All categories

3 years ago

I NEED HELP NOW PLS ASAP

Mathematics

2 answers:

castortr0y [4]3 years ago

8 0

Answer:

Step-by-step explanation:

hello,

I understand that there are only 4 cards and then the player draw a card out of the 4 cards, replace it so the second draw is still out of the 4 cards

<u>How many ways can you draw two cards?</u>

as the first card is replaced, this is 4*4=16

so there is 16 possibles ways

hearts hearts

hearts clubs

hearts diamonds

hearts spades

clubs hearts

clubs clubs

clubs diamonds

clubs spades

diamonds hearts

diamonds clubs

diamonds diamonds

diamonds spades

spades hearts

spades clubs

spades diamonds

spades spades

<u>out of these 16 ways, how many have same colour for both cards?</u>

I assume that there are only two colours Red and Black, so we can have

only 8 ways so the first probability is 8/16 = 1/2

<u>out of these 16 ways, how many are red ace first and black ace?</u>

There are 4 ways so the probability is 4/16 = 1/4

hope this helps

valkas [14]3 years ago

4 0

Standard deck has aces in four colors

Player draws one from four so the probability of drawing any first card is 1/4 (in the first drawing)

We replace the card so in second drowing its the same

So the probability of drawing two card of one chosen color is 1/4*1/4, and we have four colors

The probability of drawing two card of the same color is:

There are 2 red aces and 2 black aces

(sorry for coments - not reading carefully)

So a probability of drawing red ace in first drawing is 2/4=1/2

a probability of drawing black ace in second drowing is the same ('cause we replace the one drawn first)

So the probability that a red ace is drawn first and then the black ace is:

You might be interested in

Alyssa said that 6/8 and 9/12 are not equivalent because there is no whole number you can multiply both part of 6/8 by to get 9/

BigorU [14]

Solution: Alyssa is incorrect.

In fact $\frac{6}{8}=\frac{9}{12}$ .

If we cross-multiply the above equation, we have:

$6 \times 12 = 9 \times 8$

$72 = 72$

Therefore, they are equal.

Also, if we reduce the given fractions, we have:

$\frac{6}{8} =\frac{3}{4}$

And

$\frac{9}{12}=\frac{3}{4}$

Since both the fractions reduced to $\frac{3}{4}$ , therefore fractions are equivalent.

7 0

3 years ago

The net price equivalent rate of 3/7/13 is:

mrs_skeptik [129]

I think it’s 0.4285 or 42/85

4 0

3 years ago

2. 1. Calculate the interest if the principal is $300, the interest rate is 7% and the time is 2 years.

Andreas93 [3]

Answer:

$42

Step-by-step explanation:

Given

Principal (P) = $300

rate of interest (R) = 7%

Time (7T) = 2 years

Interest (I) = ?

We know

I = PTR / 100

= 300 * 7 * 2 / 100

= $ 42

Hope it will help :)❤

4 0

3 years ago

Determine the coordinates of the intersection of the diagonals of square ABCD with verticals A(-4,6), B(5,6) C(4,-2), and D(-5,-

timama [110]

Given:

Vertices of a square are A(-4,6), B(5,6) C(4,-2), and D(-5,-2).

To find:

The intersection of the diagonals of square ABCD.

Solution:

We know that diagonals of a square always bisect each other. It means intersection of the diagonals of square is the midpoint of diagonals.

In the square ABCD, AC and BD are two diagonals. So, intersection of the diagonals is the midpoint of both AC and BD.

We can find midpoint of either AC or BD because both will result the same.

Midpoint of A(-4,6) and C(4,-2) is

$Midpoint=\left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)$

$Midpoint=\left(\dfrac{-4+4}{2},\dfrac{6+(-2)}{2}\right)$

$Midpoint=\left(\dfrac{0}{2},\dfrac{6-2}{2}\right)$

$Midpoint=\left(\dfrac{0}{2},\dfrac{4}{2}\right)$

$Midpoint=\left(0,2\right)$

Therefore, the intersection of the diagonals of square ABCD is (0,2).

4 0

3 years ago

Johnny stated "All prime numbers are odd." Charlene responded, "I can demonstrate that your statement is false."

mario62 [17]

$\text{Hello There!}$

$\bf\text{All prime numbers are ultimately odd besides 2 because it is a factor.}$

$\text{Therefore, he would be close, but incorrect at some extent.}$

$\bold{So\;D\;would\;be\;your\;answer.}$

$\huge\text{I hope this helped! (:}$

$\rule{250}{1.5}$

6 0

3 years ago