All categories

3 years ago

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

1 answer:

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

How do I do this equation? Need help please Will mark brainliest

jenyasd209 [6]

The x (the second one) has a one in front of it so 5x *1x=5x so 5x-4 is the answer

4 0

3 years ago

Read 2 more answers

What are two decimals equivalent to 9.1

Marizza181 [45]

To get equivalent decimals you times the decimal by a number for example 2
9.1x2= 18.2
or times it by 3
9.1x3= 27.3
the answers are 18.2 and 27.3 and obviously other ones to...
i hope this helped :)

8 0

3 years ago

Tina lives in a state that charges her 4.5% state income tax on her federal taxable income. If her federal taxable income is $61

Irina-Kira [14]

$ 2772 is paid in state income tax

Solution:

Given that, Tina lives in a state that charges her 4.5% state income tax on her federal taxable income

Federal taxable income = $61,600

To find: Amount paid by Tina in state income tax

Tax rate = 4.5 %

Which means, 4.5 % of $61,600 is paid as tax

$Tax\ Rate = 4.5 \% \text{ of } 61600$

Here, "of" means multiplication or product

$Tax\ Rate = 4.5 \% \times 61600\\\\Tax\ Rate = \frac{4.5}{100} \times 61600\\\\Tax\ Rate = 0.045 \times 61600\\\\Tax\ Rate = 2772$

Thus $ 2772 is paid in state income tax

7 0

3 years ago

Mary, a colleague of yours, wants to test the effectiveness of a new lesson plan on two different groups of students. She wants

____ [38]

Answer:

To use a paired t-test

Step-by-step explanation:

t-tests are essentially tests carried out to compare two different groups to check if there is a major difference in their performances or results which may be related in certain characteristics.

A paired (correlated) t-test is used when there are matched pair of similar units or instances of repeated measurements.

In this case, Mary has to use a paired t-test because the samples (students) have high similarity in characteristics. The students in question has to be from the same class to test her hypothesis (similar characteristics).

7 0

2 years ago

The Calef family likes to paddle along the Susquehanna River.

xxTIMURxx [149]

Answers:

a. $\frac{14}{3}=4.667$ miles/day

b. 14 miles

Explanation:

Part a:

We are given that they paddled a total distance of 14 miles for 3 days. To get the distance paddled each day, we will divide the total paddled distance by the number of days

This is done as follows:

Distance paddled each day = $\frac{14}{3}=4.667$ miles/day

Part b:

Now, we are given that:

i. They went half their daily distance:

Daily distance = $\frac{1}{2}*\frac{14}{3}=\frac{7}{3}$ miles/day

ii. They extended the trip twice as many days

Number of days = 2 × 3 = 6 days

The total distance paddled will be equivalent to the product of the distance paddled each day and the total number of days

This means that:

Total distance = $\frac{7}{3}*6=14$ miles

Hope this helps :)

4 0

3 years ago