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explanation

Counting Possibilities with Repetition or No Repetition:

Counting the number of possibilities in a given situation can vary quite a bit depending on whether repetition is allowed or not. For example, if trying to find how many 6 letter passwords can be made with 10 letter choices, if the letters are allowed to be repeated then there are 10 choices for each letter in the password - resulting in... 10 x 10 x 10 x 10 x 10 x 10 = 10^6 =1,000,000 possible passwords.

However, if repetition of letters is not allowed, then there are 10 choices for the first letter, but only 9 for the second, 8 for the third, and so on. This results in only 10 x 9 x 8 x 7 x 6 x 5 = 151,200

Answer :

There are 26 letters to choose from and 10 digits (0 through 9).

(a) If the first three entries must all be the same letter, then there are 26 choices for the first entry, but only one choice for the second and third entries. The fourth entry can then be any letter, so there are 26 possible choices for the fourth entry. The fifth and sixth entry must be digits, but repetition of numbers are not permitted. So the fifth entry has 10 choices and the sixth entry only has 9 choices. This is a total of 26 x 1 x 1 x 26 x 10 x 9= 60,840

b) If the first letter must be one of A, B, C, or D, then there are 4 choices for the first entry. No repetition is allowed, so the second entry must be chosen out of the 25 remaining letters, and similarly the third and fourth entry will have 24 and 23 choices each. The fifth and sixth entry must be digits, but repetition of numbers are not permitted. So the fifth entry has 10 choices and the sixth entry only has 9 choices.  4 x 25 x 24 x 23 x 10 x 9=4,968,000 different codes

hope this helped alittle ..

Step-by-step explanation:

A negative number(or variable, in this case) is less than 0. For example, which is greater, 3 or -3? 3, right?

In variables, x or a or m or whatever, can also be represented as 1x or 1a or 1m, and so on. So in the question, it's asking which is greater, x or -x? Think of the variables as 1x or -1x.

So 1x is greater.

Hope it helps!

Answer:

X is

Step-by-step explanation:

A negative number is always leeser than a whole number

Hope this helps

Plz mark brainlest

Answer:

(6 x -10) - 2(-10+1) = 3(-10-2) + 6

-60 + 18 = -36 + 6

-42 is not equal to  -30

Sorry it can't be answered. If it is -6 instead of + 6, it would be equal

Answer:

1) Circumference = 2πr

C = 2 x π x 9

C = 18π = 56.548... = 57 inches (to the nearest inch)

2) 6h = $52.50

1h = $52.50/6 = 8.75

11h = 8.75 x 11 = $96.25 = $96 (to the nearest cent)

(57)

Answer:

for  n =  3

       [tex]Z(3) = 0.26[/tex]  

for  n =  10

       [tex]Z(3) = 0.028[/tex]

Step-by-step explanation:

from the question we are that

  The  number of applicant is n

  The  number of  people on the committee is [tex]N = 3[/tex]

Generally given that the applicant ranking is random the probability of a candidate being accepted is mathematically represented as

       [tex]Z(n) =  N  *  \frac{1}{n} *  \frac{1}{n}  *  \frac{n-1}{n}  + \frac{1}{n} *  \frac{1}{n} * \frac{1}{n}[/tex]

Now  for  n =  3

       [tex]Z(3) =  3  *  \frac{1}{3} *  \frac{1}{3}  *  \frac{3-1}{3}  + \frac{1}{3} *  \frac{1}{3} * \frac{1}{3}[/tex]      

         [tex]Z(3) = 0.26[/tex]            

Now  for  n =  10

       [tex]Z(3) =  3  *  \frac{1}{10} *  \frac{1}{10}  *  \frac{10-1}{10}  + \frac{1}{10} *  \frac{1}{10} * \frac{1}{10}[/tex]      

         [tex]Z(3) = 0.028[/tex]

Step-by-step explanation:

2(3(7)-1)

= 2(21-1)

=2(20)

=40

Answer:

there are the same

Step-by-step explanation:

-3/2 equals -1.5

so -1.5 equals -3/2

Answer:

[tex]x= 6[/tex]

Step-by-step explanation:

RT = RS + ST

[tex]48=5x+3x[/tex]

[tex]48=8x[/tex]

Swap sides:

[tex]8x=48[/tex]

Divide both sides by 8:

[tex]\frac{8x}{8} =\frac{48}{8}[/tex]

[tex]x=6[/tex]

Answer:

-6, -5, -2, 9, 10

Step-by-step explanation:

Answer:

-6,-5,-2,9,11

Answer:

below

Step-by-step explanation:

Answer:

162 square inch

Step-by-step explanation:

Area = Length * Width

Area = [tex]18*9=162[/tex]

The area of the rectangle will be 162 square inches.

The space occupied by any two-dimensional figure in a plane is called the area. The space occupied by the rectangle in a two-dimensional plane is called the area of the rectangle.

A rectangle is a quadrilateral having four sides and the sum of the angles is 180 in the rectangle the opposite two sides are equal and parallel and the two sides are at 90-degree angles.

Given that a rectangle is 18 inches long and 9 inches wide.

Area = Length x width

Area = 18 x 9

Area = 162 square inches

Therefore, the area of the rectangle will be 162 square inches.

To know more about the area of the rectangle follow

https://brainly.com/question/25292087

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Answer:

1.714

u can round it lol i just put it in a calculator

Answer: 1 and 5/7

Step-by-step explanation: To divide mixed numbers,

first write the mixed numbers as improper fractions.

So here, we can write 2 and 4/7 as the improper fraction 18/7

and we can write 1 and 3/6 as the improper fraction 9/6.

If you need a review of how to write a mixed number

as i improper fraction, let me know below and I will help.

So here, we have 18/7 ÷ 9/6.

Remember that dividing by a fraction is the same

as multiplying by the reciprocal of that fraction.

So here, 18/7 ÷ 9/6 is the same as 18/7 × 6/9.

So now we're simply multiplying fractions.

Remember that when we're multiplying fractions,

we want to cross-cancel first whenever possible.

So here, notice that we can cross-cancel 9 and 18 to 2 and 1.

However, we can't cross-cancel 7 and 6.

So we simply multiply across the numerators

and then across the denominators and we have 12/7.

We can write 12/7 as the mixed number 1 and 5/7.

Answer:

.07 is ten times as much as 0.007

Step-by-step explanation:

If you divide .07 by 10 the answer would be 0.007 <3

Answer:

Option (3)

Step-by-step explanation:

Integers are the numbers which don't have a fractional part (having positive of negative notations)

Example; -2, -1, 0, 1, 2,...

Let the two integers are 0 and 2,

Subtraction of these integers will be = 0 - 2

                                                             = 0 + (-2)

Here opposite of 2 has been added to 0.

That means subtraction of two integers is to add the opposite of the integer being subtracted.

Option (3) will be the answer.

Answer: bruv what’s the a answer

Step-by-step explanati

Answer:

Number of ways selection 5 key = 53,130

Step-by-step explanation:

Given:

Number of failed keyboard = 25

Number of electrical defects = 5

Number of mechanical defects = 19

Find:

Number of ways selection 5 key

Computation:

nCr

₂₅C₅

⇒ 25! / [5!(25! - 5!)]

⇒ 25! / [5!(20!)]

⇒ 53,130

Number of ways selection 5 key = 53,130

Answer:

2 m/s²

Step-by-step explanation:

Given:

v₀ = 0 m/s

v = 4.0 m/s

t = 2 s

Find: a

a = (v − v₀) / t

a = (4.0 m/s − 0 m/s) / 2 s

a = 2 m/s²

Answer:

At the start of a race, a runner’s velocity changes from 0 to 4.0 m/s. It takes him 2 seconds to speed up. His acceleration is 2 m/s2.

Explanation:

Acceleration is the rate at which velocity changes. To find the acceleration, divide the change in velocity (final velocity − initial velocity) by the time interval. In this example, the change in velocity is 4.0 m/s in 2 seconds. So, divide 4.0 by 2.

I hope this explanation helps you understand accelerations!

Answer:

3 79/100

Step-by-step explanation:

Answer:

379/100

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

There are 4 different sectors and each sector has 1 chance.

Answer:

It has been proven from the explanation.

Step-by-step explanation:

If we assume that the real number x is greater than 0. Now, If on the contrary, a is less than 0, we can make the argument that;

Let us make n to be a natural number and m = m(n) to be the largest positive integer in such a way that;

m/n < x

Thus, (m+1)/n ≥ x and finally;

|x - m/n| < 1/n

If r_n = m/n. It will be easy to show from the definition of limits that the sequence (r_n) has limit x.

From earlier where we assumed that x > 0, the numbers that will be obtained by truncating the decimal expansion of "x" at the n-th place will be rational, and clearly have the limit "x". Although it implies we are now assuming every real number will have a decimal expansion.

Answer:

The answer is below

Step-by-step explanation:

1) -3x = 42

Divide both sides by -3

-3x/ -3 = 42 / -3

x = -14

Answer: p.x=-14

2)

[tex]\frac{x}{-6}=-9\\ \\Multiply\ both\ sides\ by\ -6\\\\\frac{x}{-6}*-6=-9*-6\\\\x=54[/tex]

Answer: j. x=54

3) 5x = 105

Divide both sides by 5

5x/ 5 = 105 / 5

x = 21

Answer: n. x=-21

4) x+37=-25

add -37 to both sides

x+37 - 37 =-25 - 37

x = -62

Answer: d. x=-62

5) x-42=-15

add 42 to both sides

x-42 + 42 =-15 + 42

x = 27

Answer: k. x=27

6)x - (-12) = -4

x + 12 = -4

add -12 to both sides:

x + 12 - 12 = -4 - 12

x = -16

Answer:  f. x = -16

7) x - (-6) = 5

x + 6 = 5

add -6 to both sides:

x + 6 - 6 = 5 - 6

x = -1

Answer:  r. x = -1

8)8-x = -12

8 - x + x + 12 = -12 + x = 12

x = 8 + 12

x = 20

Answer: c) x = 20

9) -9 - x = -6

x = -9 + 6

x = -3

Answer: s. x =-3

10) -6 + x = 17

x = 17 + 6

x = 23

Answer: a. x =23

11)

[tex]\frac{x}{9} =-42\\multiply\ by \ 9\\\\x = 9*-42=-378[/tex]

Answer: b. x = -378

12) -16 = x - 8

x = -16 + 8

x = -8

Answer: q. x = -8

13) -25 = x + 17

x = -25 - 17

x = -42

Answer: h. x = -42

14) 36 = 8 - x

x = 8 - 36

x = -28

Answer: g. x = -28

15) -x + 6 = 11

x = 6 - 11

x = -5

Answer: m. x = -5

16) -x + 8 = 4

x= 8 - 4

x = 4

Answer: e. x =4

17) 16 = 4 -x

x = 4 - 16

x = -12

Answer: o: x = -12

18) 85 = -5x

x = 85/ -5

x = -17

Answer: l. x= -17

19) 21 = -x/7

x = 21 * -7

x = -147

Answer: i. x = -147

Answer:idk

Step-by-step explanation:idk

Answer:

Zero

Step-by-step explanation:

The grade percentage level would be zero therefore the slope is zero.

Answer:

the correct answer would be left 7

Step-by-step explanation:

because in this case |x-7| -7= left 7 and +7 is right 7 also it is within the function

I hope this helps

mark brainliest if you can

Answer: B.

7 units to the left.

Answer:

52 in screen

Step-by-step explanation:

26²+45²=c²

676+2025=c²

√2701=c²

51.97=c

Answer:

A and B

A is 4/10 which is equivalent to 40/100 (40% in fraction form)

and B is 40/100

(the shortcut is to count the blocks going across and then going down and multiply in this case it gives you 100 for the whole square and 40 shaded)

C is 2/10 or 20%

Answer:

x = -13x + 6

Step-by-step explanation:

1-x-5x=8x-5

1-x = 13x-5

-x = 13x-6

x = -13x + 6

Hope this helps!

Plz name brainliest if possible!

Answer:

The answer would be 20.

Step-by-step explanation: The area is 4 x 5 which equals 20.

Answer:

x | y | (x,y)

0 | 35 | (0,35)

3 | 50 | (3,50)

-7 | 0 | (-7,0)

Step-by-step explanation:

Given the equation: [tex] y = 5x + 35 [/tex], to complete the table, plug in the value of x given in the table in each row, to find y.

When x = 0,

[tex] y = 5(0) + 35 [/tex]

[tex] y = 0 + 35 [/tex]

[tex] y = 35 [/tex]

(0,35)

When x = 3,

[tex] y = 5(3) + 35 [/tex]

[tex] y = 15 + 35 [/tex]

[tex] y = 50 [/tex]

(3,50)

When x = -7,

[tex] y = 5(-7) + 35 [/tex]

[tex] y = -35 + 35 [/tex]

[tex] y = 0 [/tex]

(-7,0)

Answer:

h(2)+g(2) = -3

Step-by-step explanation:

[tex]h(2) +g(2)\\ \\h(t) = 3-5, g(t) = 2t -5[/tex]

        Replace the variable  (t)  with (

2)  in the expression.

h (2) = 3 - 5

        Replace the variable  (t)  with (

2)  in the expression.

g(2) = 2(2) -5

        Replace the function designators in h(2) +g(2) with the actual functions.

h(t) = 3 - 5 +2 (2) ← plug h(2) into 2(t)

         Remove parentheses.

3 - 5 + 2(2)

         Multiply 2 by 2

3 - 5 + 4 - 5

         Subtract  5  from  3

.

-2 + 4 - 5

          Add -2 and 4

2 - 5

          Subtract 5 from 2

-3