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
Inessa05 [86]
3 years ago
14

Based on what we established about the classification of x and using the closure of integers, what does the equation tell you ab

out the type of number x must be for the sum to be rational? What conclusion can you now make about the result of adding a rational and an irrational number?
Mathematics
2 answers:
Paladinen [302]3 years ago
6 0

Answer:

Step-by-step explanation:

Hatshy [7]3 years ago
3 0

Answer:   The product of a rational number with an irrational number is an irrational number. To see this assume that x is a rational number and y an irrational number. Then let us assume that the product xy is rational, which means that there are integers a,b such that xy=a/b. But then we obtain y=(1/x)(a/b) which is also rational since the set of rational numbers is closed under multiplication. But this is a contradiction since y was assumed to be an irrational number.  

You might be interested in
What is my favorite color<br> Free brainliest and points if right
DerKrebs [107]

Answer:

Step-by-step explanation:

Purple

pink

or cyan

7 0
3 years ago
Read 2 more answers
2(-3y-1)+(2y+7) plz help
MrRissso [65]

2(-3y-1)+(2y+7)  

Final result :

 5 - 4y

Step by step solution :

Step  1  :

Step  2  :

Pulling out like terms :

2.1     Pull out like factors :

  -3y - 1  =   -1 • (3y + 1)  

Equation at the end of step  2  :

 -2 • (3y + 1) +  (2y + 7)

Step  3  :

Final result :

 5 - 4

6 0
4 years ago
Consider two medical tests, A and B for a virus. Test A is 90% effective at recognizing the virus when it is present, but has a
Licemer1 [7]

1

P(V|A) is not 0.95. It is opposite:

P(A|V)=0.95

From the text we can also conclude, that

P(A|∼V)=0.1

P(B|V)=0.9

P(B|∼V)=0.05

P(V)=0.01

P(∼V)=0.99

What you need to calculate and compare is P(V|A) and P(V|B)

P(V∩A)=P(A)⋅P(V|A)⇒P(V|A)=P(V∩A)P(A)

P(V∩A) means, that Joe has a virus and it is detected, so

P(V∩A)=P(V)⋅P(A|V)=0.01⋅0.95=0.0095

P(A) is sum of two options: "Joe has virus and it is detected" and "Joe has no virus, but it was mistakenly detected", therefore:

P(A)=P(V)⋅P(A|V)+P(∼V)⋅P(A|∼V)=0.01⋅0.95+0.99⋅0.1=0.1085

7 0
3 years ago
Write the equation of a line through (0,2) that is parallel to the graph
Vinvika [58]

Answer:

y=3x+2

Step-by-step explanation:

Refer to the picture that given :)

7 0
3 years ago
7.Sabrina wants to deposit $3,066 into savings accounts at three different banks: Bank of the US,
sweet-ann [11.9K]

The amount Sheila deposits in the Bank of US saving account is $511.

Sabrina has a total of $3,066 she wants to deposit. She has three banks that she wants to deposit her money in.

Let, a represent the amount she would deposit she would invest 7/4 bank.

The amount invested in Catch bank = 6 x a = 6a

The amount invested in Bank of US = 20% x ( 6a + a)

= 0.2 x 7a

= 1.4a

The total amount invested in the three banks can be represented with this equation:

1.4a + a + 6a = 3066

In order to determine the amount she would save in the Bank of US, the amount deposited in 7/4 bank has to be determined first.

8.4a = 3066

a = $365

The amount deposited in the Bank of US = 1.4a

= 1.4 x 365

= $511

A similar question was answered here: brainly.com/question/2289204?referrer=searchResults

7 0
3 years ago
Other questions:
  • The table below shows the cube roots of different numbers: Number (x) 27 −27 125 −125 Cube root of the number (y) 3 −3 5 −5
    5·1 answer
  • The factor tree for 3,025 is shown. the simplest form of is _____
    7·2 answers
  • Given equations A and B as 2/5x+y=12 and 5/2y-x=6, respectively, which expression will eliminate variable x?
    11·2 answers
  • Which square root is NOT a whole number? <br><br> 121<br><br> 144<br><br> 169<br><br> 184
    12·2 answers
  • Last year, Teresa had $ 30,000 to invest. She invested some of it in an account that paid 5 % simple interest per year, and she
    11·1 answer
  • Can anyone help me with part C?
    5·1 answer
  • Ari’s teacher says he may have his report grade based on either the mean or the median of his last six test scores.
    6·2 answers
  • What is the median of the set of data 928, 834, 842, 841, 932, 917, 892, 856, 908, 867, 873, 868, 872, 921, and 924?
    8·1 answer
  • The length of a rectangular frame is 15 inches, and the width of the frame is 8
    11·1 answer
  • Find RT please and thank you.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!