Can someone help me in b please​

Answer:

It is B, I got it right on edman!

Step-by-step explanation:

The correct ways can the roles be assigned is  84 ways.

To find ways can the roles be assigned.

A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter.

Given That:

Total individuals = 9

Available roles = 5

First, it'll be assumed that no two individual shares a role and no single individual takes two roles.

Having said this, the number of ways the roles can be assigned can be calculated using the combination formula  as follows.

ⁿCr = C(n,r)

Where n represents the total individuals

n = 9

r represents the available roles

r = 5

So,

ⁿCr = C(n,r)

⁹C₆ = C(9,6)

⁹C₆= 9!/((9-6)!*6!)

⁹C₆ = 9!/(3!*6!)

⁹C₆ = (9 * 8 * 7 * 6!)/(6! * 3 * 2 * 1)

⁹C₆ = (9 * 8 * 7)/(3 * 2 * 1)

⁹C₆ = 504/6

⁹C₆ = 84

Hence, 9 roles can be assigned to 5 people in 84 ways.

Learn more about combination here:

https://brainly.com/question/16705925

#SPJ5

The missing option is

E. 84

Answer:

Prt A- Yes

Part B- 5:1

Step-by-step explanation:

The ratios in cases 1 and 2 form a proportion. This can be seen by dividing case a by 5 which gives 4:3;

i.e 20:15 = 20

                15

If you divide both numerator and denominator by 5, we have 4/3.

This shows that case 1 and 2 have the same proportions of friends to strangers.

Part B.

The number of friends in case 1 is 20 while in case 2 is 4.

we have, 20:4

= 20

   4

Dividing each by 4, we have 5:1.

This means that the ratio of friends that in case 1 to case 2 is 5:1.

cheers

Answer:154

Step-by-step explanation:

14/ 25 = x/275

multiply 14* 275 then divide by 25 to get 154

Answer:

168

Step-by-step explanation:

If 14/25 have passwords, and there are 275 students in her school, then the equation should be 275/25=12, 12*14=168

Answer:

8 hours

Step-by-step explanation:

Convert all the hours to minutes, then convert back at the end.

Answer:

B

Step-by-step explanation:

First thing to do here is to calculate the z-score

Mathematically;

z-score = (x-mean)/SD

here, x = 130, mean = 120 and SD = 10

Substituting these values

z-score = (130-120)/10 = 10/10 = 1

So the probability we want to calculate is;

P(z ≥ 1) = 1 - P(z <1)

From standard score table, P(z <1) = 0.15866

P(z ≥ 1) = 1-0.15866 = 0.84134

Answer:

0.16

Step-by-step explanation:

Answer:

-8x-4 is the answer using distributive property.

Answer:

-8x -4

Step-by-step explanation:

8 (-x -(1/2))

Distribute

-8*x + 8*-1/2

-8x -4

Answer:

( About ) 90%

Step-by-step explanation:

We are given the table below;

Number of seconds | Amount of water

              0                 |             0

              3                 |             75

              6                 |             150

Now from this table we see that the rate change is that for every 3 seconds of difference, the amount of water increases by 75 cm^3;

If that is so, the amount of water after 7 seconds is 150 + ( 75 / 3 ), provided the difference in seconds between 6 and 7 is 1 / 3rd that of the difference between 0 and 3, or 3 and 6;

150 + ( 75 / 3 ),

150 + 25,

175 cm^3

Now let us compute the total volume of this cylinder, as such;

πr^2 * height,

π * ( 3 )^2 * 7,

9 * π * 7,

Volume of can ⇒ 197.82 cm^3

175 / 197.82 = 0.9 = Solution; 90%

Answer:

208

Step-by-step explanation:

calculator plus had the same question before

Answer:

t = 0.77

Step-by-step explanation:

D(t) = 50 - 23 sin(π(t + 0.23))

The value of the sine function has a maximum of -1 and a minimum of 1.

The average value of the sine function is 0.

At maximum sine value:

D(t) = 50 - 23(1) = 50 - 23 = 27

At minimum sine value:

D(t) = 50 - 23(-1) = 50 + 23 = 73

At average sine value of 0:

D(t) = 50 - 23(0) = 50 - 0 = 50

The average depth of the waves is 50 cm.

Now we need to find at what time, t, that occurs.

D(t) = 50 - 23 sin(π(t + 0.23)) = 50

50 - 23 sin(π(t + 0.23)) = 50

-23 sin(π(t + 0.23)) = 0

sin(π(t + 0.23)) = 0

The value of the sine is 0 at 0, π, 2π, ..., nπ

π(t + 0.23) = nπ

t + 0.23 = n

t = n - 0.23

n is all integers, but here we are concerned with the first occurrence after time equals zero, so we want n = 1.

t = 1 - 0.23

t = 0.77

Answer:

[tex]\dfrac{3}{10}[/tex]

Step-by-step explanation:

Length of an arc[tex]=\dfrac{\theta}{2\pi}X 2\pi r=\theta r[/tex]

If the central angle of the arc is [tex]\dfrac{3\pi}{5}[/tex]

Length of an arc[tex]=\dfrac{3\pi r}{5}[/tex]

Therefore:

Ratio of the length of the arc to the circumference

[tex]=\dfrac{3\pi r}{5}:2\pi r\\=\dfrac{3\pi r}{5*2\pi r}\\=\dfrac{3}{10}[/tex]

Therefore, the arc is [tex]\dfrac{3}{10}[/tex] of the circumference is this arc.

Answer: 3 /10

Step-by-step explanation: Khan Academy

Answer:

3.1, 3.2, 3.3

Step-by-step explanation:

There are infinite options but a rational number is a fraction, decimal, or repeating decimal.

3 [tex]\frac{1}{3}[/tex] is an example of a fraction between 3 and 4

3.2 is an example of a decimal between 3 and 4

3.3333333... is an example of a repeating decimal between 3 and 4

Answer: 3.2526252625...

Explanation: The number above would be a rational number because it's a repeating decimal. Notice that in the decimal above, 2526 is a group of repeating digits and repeating decimals are rational.

Answer:

146

Step-by-step explanation:

6 * 23 = 138

138 + 8 = 146

Answer:

146

Step-by-step explanation:

6x23 = 138

138+8= 148

Answer:

ASDASD

Step-by-step explanation:

Answer:

1.) 3

Step-by-step explanation:

Divide each side by -35. Whatever you do to one side of the equation, you must do to the other side.

[tex]\frac{-35x}{-35}[/tex] = [tex]\frac{-105}{-35}[/tex]

X = 3

Answer:

4 to 7

Step-by-step explanation:

d and q go in to a frasesal angle langatuide.

Answer:

14.13

Step-by-step explanation:

Step 1) Find the total area

A = pi x r^2

A = pi x 3^2

A = 9pi

Step 2) Divide the total area by 4

9pi / 4 = 2.25pi

2.25pi = 7.07

A = 7.07 square feet

Hope this helps! :)

Answer:

the answer is $36.04

Step-by-step explanation:

34 dived into 100= 0.34 times 6 equals 2.04 34+2.04=36.04

Answer:

[tex]A \approx 113.10cm^2[/tex]

Step-by-step explanation:

The circle is a flat surface or area limited or closed by a circumference. It is a two-dimensional figure and is formed by making a curve where it will always have the same distance to the center. Its area can be calculated using the following formula:

[tex]A=\pi r^2\\\\Where:\\\\r=radius[/tex]

Therefore the area of the circular baking tray is:

[tex]A=\pi (6)^2=\pi*36=36 \pi=113.0973355\approx 113.10 cm^2[/tex]

Answer:

[tex]n[/tex]

Step-by-step explanation:

The expression [tex]n+1[/tex] represents infinite numbers, because [tex]n[/tex] can be all positive numbers, all negative numbers, or can be an element of the whole number field.

So, generally speaking, the numbers less than [tex]n+1[/tex] are [tex]n[/tex], because [tex]n<n+1[/tex].

Therefore, an expression less than the given one is [tex]n[/tex]

Answer:

n+1

Step-by-step explanation:

Answer:

multiply by the reciprocal!

so if you have 1/(2/5) it is the same as 1 * (5/2)

Answer:

it is 1.8 im sure thats the answer

Step-by-step explanation:

Answer:1.8

Step-by-step explanation:

Answer:

Number of rectangles  could alex draw with an area of 11cm² = 1

Step-by-step explanation:

Minimum length in centimeter grid = 1 cm

Alex is drawing rectangles with different areas on a centimetre grid.He can draw 3 different rectangles with an area of 12cm²

That is

                  [tex]12 = 1 \times12\\\\12=2\times6\\\\12=3 \times4[/tex]

         These are the 3 different rectangles with an area of 12cm².

Now we need to find how many rectangles could alex draw with an area of 11cm².

                    11 = 1 x 11

So only one factorization is possible.

Number of rectangles  could alex draw with an area of 11cm² = 1

Answer:

Alex can only drawn 1 rectangle with an area of 11 cm²

Step-by-step explanation:

When Area = 12 cm², Alex could draw 3 rectangles.

This is because, Area of a rectangle = Length * Breadth

and the factors of 12 are 1, 2, 3, 4, 6, and 12.

The 3 triangle formed can be gotten from the correct combinations of these factors, which are 12 × 1, 2 × 6, 3 × 4.

All of these three combinations give us an area of 12 cm²

Similarly when Area = 11 cm², 11 is a prime number and its factors are 1 and 11.

The only combination that can be made from these factors is 11 × 1.

This means that only one rectangle can be drawn

Answer:

I think it was easy.

Answer:

A

Step-by-step explanation:

Answer: C-rowdy

- Rowdy is being noisy and the question is asking you to describe Jackson's crowds who attended the ceremony.

Answer:

Angle x + 71 degrees = 180

x = 109 degrees

Step-by-step explanation:

Answer:

7/11

Step-by-step explanation:

There are 11 numbers with only 7 numbers with a multiple of 5.

Answer:

7/11

Step-by-step explanation:

first, you must determine which numbers are multiples of five. multiples of five are numbers 5 or greater that end in 0 or 5. for example, 5,10,15,20,25... . from this list, you can tell that 7 of these numbers are multiples of 5 : 55,30,50,40,40,45,25 . Next, you count the total amount of numbers. there are 11 numbers in the list. so, the probability of randomly choosing a multiple of 5 is 7/11 :)

Answer:

The correct answer is y.

Step-by-step explanation:

hope it works out !!