3 years ago

Find all real solutions:

1 answer:

6 0

$\frac{1}{x-1}+\frac{1}{x+2}=\frac{5}{4}|\cdot4(x-1)(x+2)\\
D:x\not=1 \wedge x\not=-2\\
4(x+2)+4(x-1)=5(x-1)(x+2)\\
4x+8+4x-4=5(x^2+2x-x-2)\\
8x+4=5x^2+5x-10\\
5x^2-3x-14=0\\
5x^2-10x+7x-14=0\\
5x(x-2)+7(x-2)=0\\
(5x+7)(x-2)=0\\
x=-\frac{7}{5}\vee x=2$

You might be interested in

Like please help-and show work!

tankabanditka [31]

14+4^2\14-3*4 = 15 your answer is 15

4 0

3 years ago

A right square pyramid is show below

anyanavicka [17]

Hi i think you forgot to attach the picture

3 0

3 years ago

A rectangle has an area of 112 m2. The length is 12 m more than four times the width. What is the length of a diagonal of the re

tankabanditka [31]

The answer is 1,344 hope this helps

3 0

3 years ago

What integer would represent 25 feet above sea level?

Nimfa-mama [501]

Answer:

Im guessing 25 +lollololl

8 0

3 years ago

Read 2 more answers

The scores on a test for a sample of 42 statistics students are summarized in the following table. 9, 90, 18, 80, 15, 70. Find t

igomit [66]

<h3>Answer: 78.6</h3>

Work Shown:

$\begin{array}{|c|c|} \cline{1-2}\text{Number of People} & \text{Score}\\\cline{1-2}9 & 90\\\cline{1-2}18 & 80\\\cline{1-2}15 & 70\\\cline{1-2}\end{array}$

Multiply across the rows to form a third column. Example: 9*90 = 810 in the first row.

$\begin{array}{|c|c|c|} \cline{1-3}\text{Number of People} & \text{Score} & \text{Number*Score}\\\cline{1-3}9 & 90 & 810\\\cline{1-3}18 & 80 & 1440\\\cline{1-3}15 & 70 & 1050\\\cline{1-3}\end{array}$

The values in the third column add to 810+1440+1050 = 3300

Divide this over the total number of people which is 9+18+15 = 42

The mean is 3300/42 =78.571 approximately which rounds to 78.6

5 0

2 years ago