1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Radda [10]
3 years ago
5

I want to read 4 books over the next month. My bookshelf has 12 different books. In how many ways can I choose which books to re

ad over the next month, without regard to the order that I read them?
Mathematics
1 answer:
shusha [124]3 years ago
8 0

Answer:

Step-by-step explanation:

You are going to choose 4 books in any order.

Four = 12! /(8!4!)    Remember that order doesn't matter, so we have 12C4

495

You might be interested in
A triangle and a trapezoid are graphed on the coordinate plane shown below.
Gre4nikov [31]

Answer:

10 sq units

Step-by-step explanation:

Area of triangle = 1/2(4)(2) or 4 square units

Area of trapezoid = 1/2(2)(2+4) or 6 square units

Combined area = 10 sq units

3 0
3 years ago
The same price of an item is $48 after a 40% discount what was the original price
Sonja [21]
Let, the original price = x
It would be: x*60% = 48
x = 48 / 0.60
x = 80

In short, Your Answer would be $80

Hope this helps!
8 0
3 years ago
Identify whether the equation represents an exponential growth or exponential decay function.1. y = 1/4 (1/e)^-2x2. y = (1/e)^4x
zvonat [6]

The general formula for exponential growth and decays is:

y=y_0e^{kx}

if k>0 then then it is an exponential growth function. If k<0 then the function represents an exponential decay.

Now we need to classify each of the functions:

1.

The function

y=\frac{1}{4}(\frac{1}{e})^{-2x}

can be wrtten as:

\begin{gathered} y=\frac{1}{4}(e^{-1})^{-2x}^{} \\ =\frac{1}{4}e^{2x} \end{gathered}

comparing with the general formula we notice that k=2, therefore this is an exponential growth.

2.

The function

y=(\frac{1}{e})^{4x}

can be written as:

\begin{gathered} y=(\frac{1}{e})^{4x} \\ y=(e^{-1})^{4x} \\ y=e^{-4x} \end{gathered}

comparing with the general formula we notice that k=-4, therefore this is an exponential decay.

3.

The function

y=2e^{-x}+1

comparing with the general formula we notice that k=-1, therefore this is an exponential decay.

5 0
1 year ago
Some Quadratic functions <br>I desperately need some help ​
Daniel [21]

Answer:

\large\boxed{0=3x^2+2x-2}\\\\\boxed{0=-3x+3x^2-2}\\\\\boxed{0=-1x-2+3x^2}

Step-by-step explanation:

\text{The quadratic equation:}\\\\ax^2+bx+c=0\\\\a-coefficient\\\\c-constant\ term\\\\\text{We have}\ coefficient\ a=3\ \text{and}\ constant\ term\ c=-2.\\\\\text{Therefore the equation is:}\\\\3x^2+bx-2=0\\3x^2-2+bx=0\\bx+3x^2-2=0\\bx-2+3x^2=0\\-2+3x^2+bx=0\\-2+bx+3x^2=0

6 0
3 years ago
Please help on number 3
Sedbober [7]

Answer:

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Alisa had 1/2 L of juice in a bottle. She drank 3/8 L of her juice. What
    10·1 answer
  • Need Help with # 16...............................
    13·2 answers
  • Which of the following is not true regarding sets of numbers?
    15·2 answers
  • PLEASE ANSWER QUICKLY I WILL GIVE BRAINIEST
    6·2 answers
  • Handsome Jack is buying a pony made of diamonds. The price of the pony is P dollars, and Jack also has to pay a 25% diamond pony
    15·2 answers
  • What 2 integers is the square root of 70 between?
    9·2 answers
  • I need help in math lol
    5·1 answer
  • 3^{2} + 73× 12 ÷ 7² ×π÷4
    7·1 answer
  • Find the value of x and FG based on the diagram
    10·2 answers
  • Write it in standard form
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!