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
earnstyle [38]
3 years ago
12

1/x-4 + 1/x+3 = x-6/ x^2-x-12

Mathematics
1 answer:
STALIN [3.7K]3 years ago
7 0
There is no solution
You might be interested in
Plz help this is due today AND NO LINKS OR GROSS PICTURES OR I REPORT
pshichka [43]

Answer:

90

Step-by-step explanation:

an obtuse angle is an angle from 90 - 180 degrees, so it would greater than 90 degrees

4 0
3 years ago
How can you add the fractions 3/10 and 2/5? Explain
Vinvika [58]
3/10+ 2/5
= 3/10+ 4/10 (common denominator is 10)
= 7/10

The final answer is 7/10~


5 0
3 years ago
Read 2 more answers
Which polygon has an interior angle sum of 1260°?
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

Sum of interior angle of any polygon =(n-2) × 180°where n represents the number of sides in any polygon.

Or 1260 =(n-2)x180

Dividing both sides by 180:

7=n-2

Adding both sides by 2 we have :

n=9.

Hence a nanogon will have the sum of interior angles as 1260°.

5 0
3 years ago
Read 2 more answers
During the 2000 season, the home team won 138 out of 240 regular season National Football League games. (15 points) a) Construct
jeka94

Answer:

Step-by-step explanation:

A) Confidence interval is written as

Sample proportion ± margin of error

Margin of error = z × √pq/n

Where

z represents the z score corresponding to the confidence level

p = sample proportion. It also means probability of success

q = probability of failure

q = 1 - p

p = x/n

Where

n represents the number of samples

x represents the number of success

From the information given,

n = 240

x = 138

p = 138/240 = 0.58

q = 1 - 0.58 = 0.42

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.025 = 0.975

The z score corresponding to the area on the z table is 1.96. Thus, the z score for a confidence level of 95% is 1.96

Therefore, the 95% confidence interval is

0.58 ± 1.96√(0.58)(0.42)/240

Confidence interval is

0.58 ± 0.062

B) winning more than halve of the games would be winning 120 games and above.

p = 120/240 = 0.5

We would set up the hypothesis test.

For the null hypothesis,

P ≥ 0.5

For the alternative hypothesis,

P < 0.5

Considering the population proportion, probability of success, p = 0.5

q = probability of failure = 1 - p

q = 1 - 0.5 = 0.5

Considering the sample,

Sample proportion, P = x/n

Where

x = number of success = 138

n = number of samples = 240

P = 138/240 = 0.58

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

z = (0.58 - 0.5)/√(0.5 × 0.5)/240 = 2.48

Recall that this is a left tailed test. We would determine the probability value of the area to the right of the z score from the normal distribution table.

P value = 1 - 0.9934 = 0.0066

Since alpha, 0.01 > the p value, 0.0066, then we would reject the null hypothesis.

Therefore, At the 0.01 significance level, there is no strong evidence of a home field advantage (they win more than half of the games) in professional football.

3 0
3 years ago
Professor Nwamabi is conducting an experiment in which he is examining the effects of air conditioning on sleep habits. 100 part
miskamm [114]

In the research of Professor Nwamabi  the use of air conditioning represents independent variable.

Given 100 participants are randomly selected in a research in which effects of air conditioning on sleep habits is studied.

Dependent variable is the variable whose value is dependent on the other variables like increase in profit and production.

Independent variable is the variable whose value is not dependent on the other variables.

In the research of Professor Nwamabi in which he is examining the effects of air conditioning on sleep habits, use of air conditioning represents independent variable. In this study the effect is on sleep habits means the value of sleep habits will change due to use of air conditioning. It shows that the use of air conditioning is not depending on other variable in the research.

Hence the use of air conditioning represents the independent variable.

Learn more about independent and dependent variables at brainly.com/question/25223322

#SPJ4

3 0
2 years ago
Other questions:
  • 0.5 kilograms equal to how many ounces? Round to the nearest tenth
    14·1 answer
  • Help please been stuck on this
    5·1 answer
  • (x^3)^2=x^6 true or false
    12·2 answers
  • The pyramid shown has a square base that is 18 inches on each side. The slant height is 16 inches. What is the surface area of t
    14·1 answer
  • How do I make 120% into a fraction and a decimal number?
    12·2 answers
  • The philosophers Socrates, Plato, and Aristotle shared what common belief? A) democracy is the best form of ruling the masses B)
    13·2 answers
  • the mean raduis of earth is 6371.0 kilometers and the mean radius of earth moon is 1737.5 kilometers what is the approximate dif
    14·1 answer
  • 86.23 ounces -67.74 ounces
    6·2 answers
  • Irene has 2 yards of fabric how many 1/5 yard pieces does she cut altogether?
    13·1 answer
  • Need help ASAP please
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!