Ask question

Ask question

All categories

2 years ago

7

A thief steals an ATM card and must randomly guess the correct PIN code that consists of four digits (0 through 9) that must be

entered in the correct order. Repetition of digits is allowed. What is the probability of a correct guess on the first try?

1 answer:

Sphinxa [80]2 years ago

6 0

There are 10 options for each slot, 10 x 10 x 10 x 10 = 10000. 1 / 10000 = 0.0001. the answer is 0.001%

You might be interested in

I don’t get how to solve this

Annette [7]

<EFD is also shown as e on the diagram. It is 90 degrees. <EFG is made up of the same two lines and is equal to 90 degrees (shown by the little box) so <EFD must be equivalent.

3 0

3 years ago

You bake 42 chocolate cupcakes and 28 red velvet cupcakes.You package them in boxes that have the same ratio of chocolate to red

blondinia [14]

Answer: 16 red velvet cupcakes.

Step-by-step explanation:

To solve this problem you can apply the following proccedure:

- Let's call the number of red velvet cupcakes in a box that has 24 chocolate cupcakes: $x$

- Based on the information given in the problem, you can set up the following proportion and Solve for $x$ <em>:</em>

$\frac{42}{28}=\frac{24}{x}\\\\1.5x=24\\x=16$

There are 16 red velvet cupcakes in a box that has 24 chocolate cupcakes.

5 0

3 years ago

What fraction of a gallon is a quart

cluponka [151]

Answer:

1/4 gallon

Step-by-step explanation:

4 quarts = 1 gallon, so 1 quart = 1/4 gallon.

3 0

3 years ago

1.A cube has side lengths of 15 inches, what is the surface area and volume of the cube? 2. A cube has side lengths of 8 inches,

omeli [17]

Answer:

Cube 1: 3375 cubed inches, 1350 inches squared.

Cube 2: 512 cubed inches, 384 inches squared.

Step-by-step explanation:

Formula for Volume of a Cube: $V=s^3\\$ (s - side length)

Formula for Surface Area of a Cube: $SA=6s^2$ (s- side length)

<h3>For Cube 1:</h3>

The side length's 15 inches.

Find the volume:

$V=15^3\\\rightarrow 15*15*15=3375\\\boxed {V=3375}$

The volume of cube one is 3375in³.

Find the surface area:

$SA=6(15)^2\\\rightarrow 15^2 = 225\\SA = 6 * 225\\\boxed {SA=1350}$

The surface area of cube 1 is 1350in².

<h3>For Cube 2:</h3>

The side length's 8 inches.

Find the volume:

$V=8^3\\\rightarrow 8*8*8= 512\\\boxed {V=512}$

The volume of cube two is 512in³.

Find the surface area:

$SA=6(8)^2\\\rightarrow 8^2=64\\SA=6*64\\\boxed {SA=384}$

The surface area of cube 2 is 384in².

<em>Brainilest Appreciated. </em>

3 0

3 years ago

How would you convince a fellow student that the number 0.57 is a rational number? (5+ sentences please) Please help me with thi

Gre4nikov [31]

Answer: 0.57 = 57/100 this means it has to be rational.

Explanation: You have to explain to them that any number that can be written in fraction form is a rational number. This includes integers, terminating decimals, and repeating decimals as well as fractions. An integer can be written as a fraction simply by giving it a denominator of one, so any integer is a rational number.

7 0

3 years ago

Read 2 more answers