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
postnew [5]
3 years ago
6

Is 5/8 a real number?

Mathematics
1 answer:
borishaifa [10]3 years ago
7 0
Yes, it is....fractions are considered real numbers
You might be interested in
Find the center and the radius of the circle with the equation:
nekit [7.7K]

Answer:

(x+1)^2 + (y-1)^2 = 16

And the general formula for a circle is given by this expression:

(x-h)^2 +(y-k)^2 = r^2

With the center (h,k) and the radius r. If we compare this general expression with the formula that we obtain in (1) we see that :

h = -1, k =1 , r =4

So then the best solution for this cae would be:

b. center: (-1,1)

radius =4

Step-by-step explanation:

For this case we have the following equation given:

x^2 +2x + y^2 -2y -14=0

And we can complete the squares for this case like this:

x^2 +2x +(2/2)^2 +y^2 -2y +(2/2)^2 =14 +1+1

(x^2 +2x +1) +(y^2 -2y +1) =16

Now we can rewrite the last expression like this:

(x+1)^2 + (y-1)^2 = 16

And the general formula for a circle is given by this expression:

(x-h)^2 +(y-k)^2 = r^2

With the center (h,k) and the radius r. If we compare this general expression with the formula that we obtain in (1) we see that :

h = -1, k =1 , r =4

So then the best solution for this cae would be:

b. center: (-1,1)

radius =4

5 0
3 years ago
The breaking strengths of cables produced by a certain manufacturer have a mean, , of pounds, and a standard deviation of pounds
olchik [2.2K]

The question is incomplete. The complete question is :

The breaking strengths of cables produced by a certain manufacturer have a mean of 1900 pounds, and a standard deviation of 65 pounds. It is claimed that an improvement in the manufacturing process has increased the mean breaking strength. To evaluate this claim, 150 newly manufactured cables are randomly chosen and tested, and their mean breaking strength is found to be 1902 pounds. Assume that the population is normally distributed. Can we support, at the 0.01 level of significance, the claim that the mean breaking strength has increased?

Solution :

Given data :

Mean, μ = 1900

Standard deviation, σ = 65

Sample size, n = 150

Sample mean, $\overline x$ = 1902

Level of significance = 0.01

The hypothesis are :

$H_0 : \mu = 1900$

$H_1 : \mu > 1900$

Test statics :

We use the z test as the sample size is large and we know the population standard deviation.

$z=\frac{\overline x - \mu}{\sigma / \sqrt{n}}$

$z=\frac{1902-1900}{65 / \sqrt{150}}$

$z=\frac{2}{5.30723}$

$z=0.38$

Finding the p-value:

P-value = P(Z > z)

             = P(Z > 0.38)

             = 1 - P(Z < 0.38)

From the z table. we get

P(Z < 0.38) = 0.6480

Therefore,

P-value = 1 - P(Z < 0.38)

            = 1 - 0.6480

             = 0.3520

Decision :

If the p value is less than 0.01, then we reject the H_0, otherwise we fail to reject  H_0.

Since the value of p = 0.3520 > 0.01, the level of significance, then we fail to reject  H_0.

Conclusion :

At a significance level of 0.01, we have no sufficient evidence to support that the mean breaking strength has increased.

4 0
3 years ago
Which inference is true?
Musya8 [376]

Answer:

The answer is c

I just answered the question on edunity

8 0
3 years ago
Read 2 more answers
What is 2x - 4x = 1 as a fraction
OleMash [197]

Step-by-step explanation:

2x-4x=1

-2x=1

x=-1/2

<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>you</em>

4 0
3 years ago
Read 2 more answers
Preform the indicated operation 15 - (-11)
xenn [34]

Answer:It would be: 15 - (-11)

= 15 + 11

= 26

Step-by-step explanation:

5 0
4 years ago
Other questions:
  • The expression x+3/2x-8 is undefined when x=____?
    7·2 answers
  • Solve for x -9 = -7
    8·2 answers
  • Choose the correct answer.
    11·1 answer
  • What is the quotient of 18/1000?
    9·2 answers
  • The measure of the supplement of an angle is 36 less than the measure of the angle. Find the measures of the angles.
    15·1 answer
  • MATH <br><br>Please heeeeeeeeeeeelp​
    7·1 answer
  • C= 7/6 (k-17) <br><br>Solve for k. ​
    8·1 answer
  • This is for adding and subtracting polynomials, word problems. I have real difficulty with word problems in math, so please help
    8·1 answer
  • What is the LCD of 4 and 5?<br><br> 13<br> 21<br> 42<br> 36
    11·2 answers
  • What is the answer. I need it ASAP u have to choose 3 answers
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!