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
zimovet [89]
4 years ago
7

X/(x-2) + (x-1)/(x+1) = -1 How to solve?

Mathematics
1 answer:
kirill115 [55]4 years ago
7 0
Multiply entire equation by (x-2)(x+1) to get rid of the denominators That would lead to X(x+1)+(x-1)(x-2)=-1(x-2)(x+1)
Finally, using distributive property and foil, you would get x^2+x+x^2-3x+2=(-x^2+x+2).2x^2-2x+2=-x^2+x+23x^2-3x=0
3x(x-1)x=0 and x=1

You might be interested in
Just want to double check does that look right to y’all or is it another answer ? Please help !!!!!
yaroslaw [1]

Answer:

Yes looks right

Step-by-step explanation:

5 0
3 years ago
The table shows the relationship of how many pounds of apples are needed to make a certain number of pies: Number of Pies 5 10 1
Shkiper50 [21]
8 pounds of apples are needed.

If this helped and you have any other questions, feel free to comment on my wall. Hope this helped.
4 0
3 years ago
I need help steps to find the answer
sleet_krkn [62]

Step-by-step explanation:

101° = (6x + 5)° (by F angles)

Therefore 6x = 96 and x = 16.

6 0
3 years ago
Read 2 more answers
A researcher would like to estimate the proportion of all children that have been diagnosed with Autism Spectrum Disorder (ASD)
aliina [53]

Answer:

The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

M = z\sqrt{\frac{\pi(1-\pi)}{n}} is the margin of error.

95% confidence interval

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so z = 1.96.

We have that:

M = 0.02, \pi = 0.0147

So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 1.96\sqrt{\frac{0.0147*(1-0.0147)}{n}}

0.02\sqrt{n} = 0.2359

\sqrt{n} = 11.79

n = 139.1

The researcher should use a sample size of at least 140 children to get a margin of error to be within 2%.

4 0
4 years ago
Read 2 more answers
5) Combine like terms for this expression: X+5x2 + 6 - 2 + 3x + 3x + 4​
Kaylis [27]
Not sure because that’s a lot of numbers
3 0
3 years ago
Other questions:
  • G(x)=x3+6x2+12x+8 when x=-1
    11·1 answer
  • Write an appropriate direct variation equation if y = 27 when x = 9
    6·2 answers
  • How to explain what comes next 1,2,2,3,3,3,4,4,4,4 for third graders?
    8·1 answer
  • How many cubic centimeters are in the block?​
    6·1 answer
  • Jay estimates that a basketball weights about .5 pounds. Shawna estimates that a basketball weights about.05. Whose estimate is
    14·1 answer
  • Instead of using the values {1,2,3,4,5,6) on dice, suppose a pair of dice have the following: {1,2,2,3,3,4} on one die and {1,3,
    15·1 answer
  • A worker is tiling the floor of a rectangular room that is 12 feet by 15 feet. The tiles are square with side lengths 1 & 1/
    5·2 answers
  • 300 x 400 = 1200 the same as 3 x 4 = 12
    11·2 answers
  • HELP timed thank you
    11·1 answer
  • True or False The Solutions, Roots, X-intercepts and zeros of a quadratic equation are all the same thing? why
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!