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
goldenfox [79]
2 years ago
15

-8-8x^2=-31 how to solve for x

Mathematics
1 answer:
Zepler [3.9K]2 years ago
8 0

Answer:

x = ± \sqrt{\frac{23}{2\sqrt{2}}}

Step-by-step explanation:

-8 - 8x^2= -31

Since this is a quadratic, it needs to be factored.

First, move the x to the other side:

-8 = 8x^2 - 31

Then, get the x alone by first adding 31:

23 = 8x^2

then dividing by 8:

x^2 = 23/8

Finally, square root both sides and remember the even roots property:

x = ± \sqrt{\frac{23}{8}}

and simplify the root 8:

x = ±  \sqrt{\frac{23}{2\sqrt{2}}}

Note: This answer may have a mistake.

You might be interested in
If you can pls answer any of these 6-10 plz do it would really help<br> (pic below)
Mariana [72]

Answer: the first one is $0.35

price per apple

5 0
3 years ago
Read 2 more answers
How many numbers lie between the squares of 39 and 40
Amiraneli [1.4K]

Answer:

i guess its 1...

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Identify the stem: 556 <br> A. 5<br> B. 6<br> C. 55<br> D. 56<br> ...Ahem.. Help?
Semenov [28]
C. a leaf is only one digit
3 0
3 years ago
Read 2 more answers
Based on the data in the two-way table, the probability of being 25-35 years and having a hemoglobin level above 11 is __ a.29 b
Alina [70]

The probability of being 25-35 years and having a haemoglobin level above 11 is 34%.

The probability of having a haemoglobin level above 11 is 36%.

Being 25-35 years and having a hemoglobin level above 11 are not dependent on each other.

<h3>What are the probabilities?
</h3>

Probability determines the odds that a random event would occur. The odds of the event happening lie between 0 and 1.

The probability of being 25-35 years and having a haemoglobin level above 11 = number of people between 25 - 35 that have a level above 11 / total number of people between 25 - 35

44 / 128 = 34%

The probability of having a haemoglobin level above 11  = number of people with a level above 11 / total number of respondents

153 / 429 = 36%

To learn more about probability, please check: brainly.com/question/13234031

#SPJ1

4 0
2 years ago
Trying to find volume
Goryan [66]

Answer:660 in

Step-by-step explanation:10x11x6=660 in

5 0
3 years ago
Other questions:
  • Please help me on this ?!?!?!
    14·1 answer
  • Write an equation for the graph​ below, which represents an exponential function f with base 2 or​ 3, translated​ and/or reflect
    8·1 answer
  • Look at this formula showing the relationship between temperature degrees Celsius and temperature in degrees Fahrenheit C = 5/9
    14·1 answer
  • Find the area of the circle. Round your answer to the nearest hundredth.
    6·1 answer
  • At 7:00 a.m., the temperature was -3°F. At 6:00 p.m., the temperature was
    6·1 answer
  • Write the equation of the line that passes through the points (-1,-4) and (9,-5).
    14·1 answer
  • Find the indicated length
    13·1 answer
  • What is the area? write your answers as a fraction or as a whole mixed number.
    13·1 answer
  • How do you graph an equation using x and y intercepts.
    12·1 answer
  • When Brittany spins the spinner, there is a 20% chance that it will land on red, a 15% chance that it will land on blue, a 25% c
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!