All categories

3 years ago

Suppose you draw a card from a well-shuffled deck of 52 cards. What is the probability of drawing a 7 or a queen?

Mathematics

1 answer:

o-na [289]3 years ago

6 0

Answer:

$\frac{8}{52}$ = 0.15384615384 = 15.38%

Step-by-step explanation:

There are 4 7 cards and 4 queen cards so,

$\frac{4}{52}$ + $\frac{4}{52}$ = $\frac{8}{52}$

You might be interested in

Which number line graph represents the compound inequality –6 ≤ x < 2

Andrei [34K]

Answer:

the 4th option

Step-by-step explanation:

x is greater than -6 but less than 2

6 0

2 years ago

Read 2 more answers

Convert 35 centimeters to inches por favcor please!

Vera_Pavlovna [14]

Answer:

13.7795 inches

Step-by-step explanation:

6 0

1 year ago

Read 2 more answers

The graph of a quadratic function passes through the points (-1,0), (-2,0), and (0,2). Write the quadratic function in general f

ddd [48]

Answer:

$f(x)=x^2+3x+2$

Step-by-step explanation:

step 1

we have the points

(-1,0), (-2,0), and (0,2)

Plot the points

using a graphing tool

see the attached figure

The graph of a quadratic function must be a vertical parabola open upward

The vertex is a minimum

The quadratic function in general form is equal to

$f(x)=ax^2+bx+c$

Substitute the value of x and the value of y of each given ordered pair in the general equation and solve for a,b and c

(0,2)

For x=0, y=2

substitute

$2=a(0)^2+b(0)+c$

$c=2$

(-1,0)

For x=-1, y=0

substitute

$0=a(-1)^2+b(-1)+2$

$0=a-b+2$ ----> $a=b-2$ ----> equation A

(-2,0)

For x=-2, y=0

substitute

$0=a(-2)^2+b(-2)+2$

$0=4a-2b+2$ ----> equation B

we have the system

$a=b-2$ ----> equation A

$0=4a-2b+2$ ----> equation B

substitute equation A in equation B

$0=4(b-2)-2b+2$

solve for b

$0=4b-8-2b+2$

$2b=6$

$b=3$

Find the value of a

$a=3-2=1$

therefore

The quadratic function in general form is equal to

$f(x)=x^2+3x+2$

see the attached figure N 2 to better understand the problem

7 0

3 years ago

Lancer watched 6 videos. Each video was 33.5 minutes long. How long did Perla spend watching videos? A.6 minutes B.27.5 minutes

Mumz [18]

201 minutes because 6 multiplied by 33.5 = 201 minutes

5 0

3 years ago

A giant tortoise can walk about 1/10 meter per second on land. A cooter turtle can walk about 1/2 meter per second on land. How

galina1969 [7]

The rate of giant tortoise is 1/10 meters per each second.
The rate of cooter turtle is 1/2 meters per each second.

How long would it take a giant <span>tortoise to travel 5 meters?
1 second : 1/10 m = X : 5 m
1/10x = 5
x = 50 seconds

How much longer would it take a giant tortoise than a cooter turtle to travel 10 meters on land?
1 second : 1/2 m = X : 10 m
1/2x = 10
x = 20 seconds

So the giant turtle can travel 5 meters in 50 seconds.
</span><span>So the cooter turtle can travel 10 meters in 20 seconds.</span>

6 0

2 years ago

Suppose you draw a card from a​ well-shuffled deck of 52 cards. What is the probability of drawing a 7 or a queen​?

Suppose you draw a card from a well-shuffled deck of 52 cards. What is the probability of drawing a 7 or a queen?