All categories

3 years ago

Solve for x. Write both solutions, separated by a comma. 8x^2+7x-1=0

Mathematics

1 answer:

Ivan3 years ago

7 0

Answer:

Step-by-step explanation:

8x² + 7x - 1 = 0

Rewrite 7x as a difference

That's

8x² + 8x - x - 1 = 0

Factorize

8x( x + 1) - ( x + 1) = 0

(8x - 1)( x + 1) = 0

8x - 1 = 0 x + 1 =0

8x = 1 x = - 1

x = 1/8

The solutions are

Hope this helps you

You might be interested in

How many three letter permutations are possible from the letters in the word ACTION? ("ACT" is not the same as "CAT" so order is

Alinara [238K]

Answer:

120

Step-by-step explanation:

formula:

$\frac{n!}{(n-h)!}=\frac{6!}{(6-3)!}=120$

7 0

3 years ago

Need help!! What is the slope of the line through (2,-2) and (9,3)?

In-s [12.5K]

Finding the slope using two points:

The formula for slope is

$\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

In this case...

$y_{2} =3\\y_{1} =-2\\x_{2} =9\\x_{1} =2$

^^^Plug these numbers into the formula for slope...

$\frac{3 - (-2) }{9 - 2}$

A) $\frac{5}{7}$

^^^This is your slope

Hope this helped!

~Just a girl in love with Shawn Mendes

6 0

2 years ago

Read 2 more answers

The probability of winning a new car is 1/500,000. What are the odds against winning the car?

BaLLatris [955]

The odds against winning the car is 500,000/1

4 0

3 years ago

Which statement is true

liberstina [14]

B is true
********************************************************************************

8 0

3 years ago

What is the slope of this line

alexgriva [62]

The slope is 1/3 because in order to get from point (3,1) to (6,2) you need to rise 1 and go over 3

4 0

3 years ago