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3 years ago

What is the probability of choosing a king from a standard deck of cards?

Mathematics

2 answers:

arsen [322]3 years ago

6 0

4 out of 52 because there are 52 cards in a deck but only 4 kings therefore it would be 4 king out of a deck of 52

pickupchik [31]3 years ago

3 0

4/52 that is the formula of this equation and x equals the number
x*100 that 4/52 equals
x%

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The radius of a pizza dish is 12 inches. which expression would best describe the circumference of the pizza dish?

Elenna [48]

The circumference is 75.4

3 0

3 years ago

A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter

Digiron [165]

Answer:

at least 5

Step-by-step explanation:

If the question was similar to the one given below

A researcher plans to identify each participant in a certain medical experiment with a code consisting of either a single letter or a pair of distinct letters written in alphabetical order. What is the least number of letters that can be used if there are 12 participants, and each participant is to receive a different code?

The answer would be as follows

If we use 3 letters or any distinct letter as a comma such that 2 are in alphabetical order then we would get

4C2= 6 ways to use these letters and the comma

If we use 4 letters or any distinct letter as a comma such that 2 are in alphabetical order then we would get

5C2= 10 ways to use these letters and the comma

If we use 5 letters or any distinct letter as a comma such that 2 are in alphabetical order then we would get

6C2= 15 ways to use these letters and the comma

We need the least number of the alphabets to assign codes to 12 participants.

So the least number of alphabets is 5 because it can give codes to at least to 12 people .

Pair of alphabets + distinct letter ≥ 12

5 + 1 ≥ 12

6c2 ≥ 12

15 ≥ 12

3 0

2 years ago

The equation of a proportional relationship is of the form y=kx, where k is a positive number, and the graph is a line through (

laila [671]

9514 1404 393

Answer:

see attached

Step-by-step explanation:

The graph of a line with negative slope goes down to the right. The line would still go through the origin. An example is attached.

5 0

3 years ago

the original cost of a piano is 19,100 and it is on a sale for 19% off its original price if the total l cost includes a 5% sale

amid [387]

Answer:

16,244.55

Step-by-step explanation:

Original cost of piano = 19,100

19% off on 19,100 = 0.19*19100 = 3,629

Selling cost = 19100 - 3629 = 15471

Sales tax = 5% =0.05

Amount of sales tax = 0.05*15471 = 773.55

Total selling cost of piano = Selling cost + Amount of sales tax = 15471 + 773.55 = 16,244.55

4 0

3 years ago

Read 2 more answers

Four times a number is equal to the number increased by 15. Enter the equation that represents Karla's sentence into the box. Us

Montano1993 [528]

Answer:

The equation that represents Karla's sentence is 4y = y + 15

Step-by-step explanation:

From the question,

Four times a number is equal to the number increased by 15. To write the equation that represents the sentence, we will have to use a variable to represent the unknown number.

Since we are asked to use y for the variable, that is, let the number be y

Then

The statement, "four times a number" will be

4×y = 4y

and this is equal to the number increased by 15,

The number increased by 15 means y + 15.

Hence, the equation becomes

4y = y + 15

This is the equation that represent Karla's sentence.

If desired,

The unknown number can be determined by solving for y in the equation

4y = y + 15

First, Collect like terms

4y - y = 15

3y = 15

Then, Divide both sides by 3

3y/3 = 15/3

y = 5

Hence, the variable (unknown number) is 5.

5 0

2 years ago