Ask question

Ask question

All categories

Juliette [100K]

3 years ago

11

There are 20 students on the School Leadership Council. They need to form a committee of 4 in order to plan the upcoming school

dance. How many different groups of 4 can be created from the council?
A)4845
B)116,280
C)24
D)20!

1 answer:

yarga [219]3 years ago

6 0

Answer:

um I did the math and I got 5, so i dont really understand

You might be interested in

The slope (b1) represents

Alexandra [31]

Your answer would be
B. the estimated average change in y per unit change in x

6 0

3 years ago

can someone help me!! Use algebraic rules of equations to predict the solution type to the system of equations. Include all of y

xz_007 [3.2K]

Answer:

x + y = 4 Equation 1

y = 2x -1 Equation 2

-2x + y = -1

x + y = 4

Subtract

You will get

- 3x = -5

Divide by -3

-3x / -3 = - 5 /-3

x = 5/3

Substitute x into equation 1

x + y = 4

x = 5/3

5/3 + y = 4

y = 4 - 5/3

y = 7/3

x = 5/3 y = 7/3

Hope this helps.

4 0

3 years ago

Write two numbers that multiply to the value on top and add to the value on bottom.

egoroff_w [7]

Answer:

<h2><em><u>8</u></em><em><u> </u></em><em><u>and</u></em><em><u> </u></em><em><u>3</u></em></h2>

<em>8 x 3 = 24</em>

<em>8 + 3 = 11</em>

7 0

3 years ago

Read 2 more answers

Ticket costs £63 plus a booking fee of 3%. <br> What is the total price of the ticket ?

Arte-miy333 [17]

The answer is £64.89.

Step by Step:

Take the original price multiplied by 0.03 ( the percent of a booking fee ) and add those amounts together.

Equation: 63 + 1.89 = 64.89

5 0

3 years ago

One of the loudest sounds in recent history was that made by the explosion of Krakatoa on August 26-27, 1883. According to barom

liraira [26]

Answer:

150.51 dB

Step-by-step explanation:

Data provided in the question:

decibel level of sound at 161 km distance = 180 dB

d₁ = 161 km

d₂ = 4800 km

I₁ = 180 db

The formula for intensity of sound is given as:

I = $10\log(\frac{I_2}{I_1})$

and the relation between intensity and distance is given as:

I ∝ $\frac{1}{d^2}$

or

Id² = constant

thus,

I₁d₁² = I₂d₂²

or

$\frac{I_2}{I_1}=\frac{d_1}{d_2}$

therefore,

I = $10\log(\frac{d_1}{d_2})^2$

or

I = $10\times2\times\log(\frac{161}{4,800})$

or

I = 20 × (-1.474)

or

I = -29.49

Therefore,

the decibel level on Rodriguez Island, 4,800 km away

= 180 - 29.49

= 150.51 dB

8 0

3 years ago