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
erastovalidia [21]
3 years ago
6

Can a irrational number be a rational number?

Mathematics
1 answer:
otez555 [7]3 years ago
3 0

No, an irrational number cannot be a rational number

If they could there would literally be no point in the term “irrational number” existing

You might be interested in
The effect of a monetary incentive on performance on a cognitive task was investigated. The researcher predicted that greater mo
riadik2000 [5.3K]

Answer:

1) H_0:\mu_5=\mu_{25}=\mu_{50}

2) H_a:\mu_{50}>\mu_{25}>\mu_{5}

3) A Type I error happens when we reject a null hypothesis that is true. In this case, that would mean that the conclusion is that there is evidence to support the claim that the greater the incentive, the more puzzles are solved, but that in reality there is no significant difference.

4) A Type II error happens when a false null hypothesis is failed to be rejected. In this case, that would mean that there is no enough evidence to support the claim that the greater the incentive, the more puzzles are solved, but in fact this is true.

5) The probability of a Type I error is equal to the significance level, as this is the chance of having a sample result that will make the null hypothesis be rejected.

Step-by-step explanation:

As the claim is that the greater the incentive, the more puzzles were solved, the null hypothesis will state that this claim is not true. That is that there is no significant relation between the incentive and the amount of puzzles that are solved. In other words, the mean amount of puzzles solved for the different incentives is equal (or not significantly different):

H_0:\mu_5=\mu_{25}=\mu_{50}

The research (or alternative hypothesis) is that the greater the incentive, the more puzzles were solved. That means that the mean puzzles solved for an incentive of 50 cents is significantly higher than the mean mean puzzles solved for an incentive of 25 cents and this is significantly higher than the mean puzzles solved for an incentive of 5 cents.

H_a:\mu_{50}>\mu_{25}>\mu_{5}

A Type I error happens when we reject a null hypothesis that is true. In this case, that would mean that the conclusion is that there is evidence to support the claim that the greater the incentive, the more puzzles are solved, but that in reality there is no significant difference.

A Type II error happens when a false null hypothesis is failed to be rejected. In this case, that would mean that there is no enough evidence to support the claim that the greater the incentive, the more puzzles are solved, but in fact this is true.

The probability of a Type I error is equal to the significance level, as this is the chance of having a sample result that will make the null hypothesis be rejected.

4 0
3 years ago
What is the surface area of the cylinder?
Ilya [14]

Answer:

Option number 3: 1,356.48 cm².

3 0
2 years ago
Read 2 more answers
Find the solution set for the system of equations.<br> 9x + 5y = 28<br> 5x + 9y = 56
Jobisdone [24]
First step find a common multiple, e.g. 45 and subtract
9x + 5y = 28   * 5
5x + 9y = 56   * 9

45x + 25y = 140
-(45x + 81y = 504)
-56y = -364
56y = 364
y = 6.5

Substitute into any equation
9x + 5(6.5) = 28
9x + 32.5 = 28
9x = -4.5
x = -0.5

x = -0.5   , y = 6.5

6 0
3 years ago
What are the solutions of the quadratic equation (x + 3)2 = 49? A. O x = 2 and x = - 10 B.O.x = 4 and x = -10 C.O x=-2 and x = -
tatyana61 [14]

Answer:

B. x = 4 and x = -10

Step-by-step explanation:

First, expand the equation

(x + 3)² = 49

(x + 3)(x + 3) = 49

x² + 6x + 9 = 49

Subtract 49 from both sides

x² + 6x -40 = 0

Factor

(x + 10)(x - 4) = 0

Solve

x + 10 = 0

x = -10

x - 4 = 0

x = 4

So, the correct answer is B. x = 4 and x = -10

8 0
2 years ago
Solve the triangle.<br> A = 46°, a = 31, b = 27
Veronika [31]

Step-by-step explanation:

a=31

b=27

A = 46 degree

now, Area of ️ABC =ab siny÷2

=31×27 sin46÷2

=301.04371 .

5 0
3 years ago
Other questions:
  • How do you divide decimals
    15·2 answers
  • 243.875 round to the nearest hundred
    11·2 answers
  • true or false the shortest distance from the center of the circumscribed circle to the sides of the inscribed triangle is the ci
    14·2 answers
  • What is a asteroid belt,
    7·1 answer
  • Mike recorded the temperatures 0°, 28°, −10°, 15°, and −19°. Which set shows the temperatures, in degrees Fahrenheit, in order f
    12·1 answer
  • The amount to which $5,000 would grow in ten years at 6% compounded semiannually.
    11·2 answers
  • Find the hypotenuse, find x and round to the nearest tenth.
    10·1 answer
  • Given the points a to zero 8, 0 what scale factor is applied to the create this change​
    6·1 answer
  • LOOK AT THE PICTURE PLEASE HELP A GIRL OUT IM STUCK ON THIS QUESTION AND I DONT HAVE A LOT OF TIME!!
    15·2 answers
  • 7. A survey showed that 55% of a travel company's customers were planning an
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!