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
kirill [66]
3 years ago
5

Let A= {1 , 2 , 3 , ... ... ...... , 10} and R = {(a, b): a ∈ A , b ∈ A and a + 2b = 10} Find the domain and range of R.

Mathematics
1 answer:
Deffense [45]3 years ago
8 0

In domain and range of a relation, if R be a relation from set A to set B, then

• The set of all first components of the ordered pairs belonging to R is called the domain of R.

Thus, Dom(R) = {a ∈ A: (a, b) ∈ R for some b ∈ B}.

• The set of all second components of the ordered pairs belonging to R is called the range of R.

Thus, range of R = {b ∈ B: (a, b) ∈R for some a ∈ A}.

Therefore, Domain (R) = {a : (a, b) ∈ R} and Range (R) = {b : (a, b) ∈ R}

You might be interested in
255,250,245,... Find the 40th term.
Brut [27]
An=-5n+260
A40=60
So the Awnser is 60


(Hope this helped!!)
5 0
2 years ago
The number of students in an school building that have the flu after t days is given by the function
gulaghasi [49]

Step-by-step explanation:

p(0) =  \frac{800}{1 + 49 {e}^{ - 0.2 \times 0} }  =  \frac{800}{1 + 49}  =  \frac{800}{50}  = 16

200 =  \frac{800}{1 + 49 {e}^{ - 0.2t} }  \\ 200(1 + 49 {e}^{ - 0.2t} ) = 800 \\ 200 + 9800 {e}^{ - 0.2t}  = 800 \\ 9800 {e}^{ - 0.2t}  = 600 \\  {e}^{ - 0.2t}  =  \frac{3}{49}  \\  ln( {e}^{ - 0.2t} )  =  ln( \frac{3}{49} )  \\ -  0.2t =  - 2.793 \\ t = 13.96 = 14

6 0
3 years ago
2nd question this is still confusing even after getting the formula
Nana76 [90]
Check the picture below.

so the figure is really just 3 rectangles and two triangles.

simply get the area of all 5, sum them up, and that's the area of the figure.

recall that area of a triangle A = ½bh.

3 0
3 years ago
Some electronic devices are better used than new: the failure rate is higher when they are new than when they are six months old
Reptile [31]
Given that half of the personal music players sold by a particular brand have a flaw. If the player has the​ flaw, it dies in the first six months. If it does not have this​ flaw, then only 20​% fail in the first six months.
Let A be the event that it fails in I 6 months
B1 = it has a flaw
B2 = it does not have a flaw
B1 and B2 are mutually exclusive and exhaustive
the chances that it has this​ flaw
=The probability that it has the flaw is

7 0
2 years ago
What is , x + 4 + 5x =34
galina1969 [7]
X+4+5x=6x+4
6x+4=34
6x=30 (minus 4 on both sides)
30÷6=5
hence: x=5
4 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for x round to the nearest tenth
    5·1 answer
  • Which shows the expressions in the order they would appear on a number line from least to greatest?
    5·2 answers
  • URGENT NEEDS ANSWERED RIGHT AWAY Talk of the Town is a cell phone provider. They charge by the month. The first month of service
    11·1 answer
  • Write the equation of a line in standard form that has x-intercept (P,0) and y-intercept (0,R).
    8·1 answer
  • Pls help me with this
    9·2 answers
  • Answer quick please!
    9·1 answer
  • Help plz:))) I’ll mark u brainliest <br> ASAP!!!
    15·2 answers
  • What is a median is statistics?
    13·2 answers
  • Adiciones racinales 1/7+3/7+2/7
    6·1 answer
  • If you have 66 data observations in a sample, how many classes (bins) does the sturges' rule recommend for you to construct a fr
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!