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
Andreyy89
3 years ago
7

Without calculating the sum, determine whether each answer will be rational or irrational.

Mathematics
1 answer:
Ray Of Light [21]3 years ago
7 0

Answer:

Irrational

rational

Step-by-step explanation:

You might be interested in
Which expression is equivalent to 63 + 27?
azamat
The answer would be B.
5 0
3 years ago
Which of the following is an extraneous solution of (45-3x)^1/2=x-9?
Iteru [2.4K]

Answer:

C. x =3

Step-by-step explanation:

Extraneous solution is that root of a transformed equation that doesn't satisfy the equation in it's original form because it was excluded from the domain of the original equation.

Let's solve the equation first

\sqrt{45-3x} = x-9\\Taking\ square\ on\ both\ sides\\{(\sqrt{45-3x})}^2 = {(x-9)}^2\\45-3x = x^2-18x+81\\0 = x^2-18x+81-45+3x\\x^2-15x+36 = 0\\x^2-12x-3x+36 = 0\\x(x-12)-3(x-12) = 0\\(x-3)(x-12)\\x-3 = 0\\=> x =3\\x-12 = 0\\x = 12\\We\ will\ check\ the\ solutions\ one\ by\ one\\So,\\for\ x=3\\\sqrt{45-3(3)} = 3-9\\\sqrt{45-9} = -6\\\sqrt{36}= -6\\6\neq -6\\For x=12\\\sqrt{45-3(12)} = 12-9\\\sqrt{45-36} = 6\\\sqrt{36}= 6\\6=6

Hence, we can conclude that x=3 is an extraneous solution of the equation ..

3 0
3 years ago
What is the slope of the line that passes through the points (4,-9) and ? (8,-3) Write your answer in simplest form.
Mariana [72]
The slope of the line =1.5x - 15
8 0
3 years ago
Read 2 more answers
What’s the value of x? and what’s the measure of angel JHK?
enot [183]

Answer:

x = 14

JHK =  21

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

3x-21 = x+7

Subtract x from each side

3x-x -21 = x+7-x

2x-21 = 7

Add 21 to each side

2x-21+21 = 7+21

2x = 28

Divide by 2

2x/2 =28/2

x = 14

JHK = 3x-21 = 3(14) -21 = 42-21 = 21

3 0
2 years ago
Read 2 more answers
Math fractions subhan cut a sandwich into 8 equal pieces and ate 1 piece. he had 7/8 left subhan put each of the remaining piece
erma4kov [3.2K]
1 sandwich cut into 8 pieces then eats 1 pieces, 
then had 7/8 lefts means that 7 pieces left, if he put each mean put 1 pieces in a plate, than he need 7 plates.

When he ate 1 piece, it means that he ate 1/8 or 1 out of 8 pieces.  
he put 1/8 part of the sandwich on each plate.
8 0
3 years ago
Other questions:
  • mrs. West took her class on a field trip to the museum cost of admission for the girls was $90 and the cost of admission for the
    12·2 answers
  • If As income is 20% more than Bs income, how much percent is Bs income less than As income
    5·1 answer
  • Need help ASAP. ( Need help ASAP please and thank you). The rectangle shown is dilated by a scale factor of 2. A) Calculate the
    13·2 answers
  • Can you help please on this question i am stuck
    13·2 answers
  • Which of these choices represent a exponential pattern select all that apply.
    6·1 answer
  • Which system of equations is represented by the graph?
    10·1 answer
  • A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or chicken. Of 200 respondents
    6·1 answer
  • Factorise the following :<br>​
    10·2 answers
  • Please help me complete the table then graph
    6·1 answer
  • NEED ALGEBRA HELP!<br><br> Pls help I will do anything :(
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!