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
Novay_Z [31]
2 years ago
11

Help me with this question I will mark brainlist no web link Solve :-9n²-64=0​

Mathematics
1 answer:
Archy [21]2 years ago
6 0
Factorize

(3n + 8) (3n - 8) = 0
3n + 8 = 0 and 3n - 8 = 0

Solve both for n

3n + 8 = 0
3n = -8
n = -8/3


3n - 8 = 0
3n = 8
n = 8/3

Therefore n = -8/3 and n = 8/3
You might be interested in
40 POINTS!!!!!!!! NEED HELP
aniked [119]
Where is the grid are u gonna take a pic?
6 0
2 years ago
Alex is trying to run a certain number of miles by the end of the month Alex is 40% of the way to achieving her goal and she alr
docker41 [41]

Answer:

30 miles

Step-by-step explanation:

Given that:

Alex has some target to run a certain number of miles by the end of the month.

Goal already achieved = 40% of the total goal

Number of miles already run by Alex = 12 miles

To find:

Number of miles that Alex is trying to run by the end of month?

Solution:

We have to find nothing but the goal of Alex here.

Let the number of miles that Alex is trying to run by the end of the month = x miles

As per question statement:

40% of total number of miles to be run = 12 miles

OR

\dfrac{40}{100}\times x = 12\\\Rightarrow 40x=12\times 100\\\Rightarrow x = \dfrac{1200}{40}\\\Rightarrow \bold{x = 30\ miles}

Total number of miles that Alex is trying to run by the end of the month = <em>30 miles</em>

4 0
3 years ago
Please do this correct if inappropriate then report and no LINKS and also will do brainly
Nuetrik [128]
Mean=87.5
Median=88
Mode=79,85,86,90,92,93 so technically all the numbers show are the mode cause they all repeat 1 time but if there were two of the same number that would be the mode cause there’s two and not one so you always go by which one repeats more!
4 0
2 years ago
Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. find the missing te
Allisa [31]

The missing term in the provided quadratic equation is 10x if the roots of a quadratic equation are 5 ± 3i.

<h3>What is a complex number?</h3>

It is defined as the number which can be written as x+iy where x is the real number or real part of the complex number and y is the imaginary part of the complex number and i is the iota which is nothing but a square root of -1.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have the roots of a quadratic equation:

5 ± 3i

To find the quadratic equation:

(x - (5+3i))(x - (5-3i))

\rm =x^2+x\left(-\left(5-3i\right)\right)-\left(5+3i\right)x-\left(5+3i\right)\left(-\left(5-3i\right)\right)

= x² -10x + 34

The missing value is 10x

The quadratic equation is:

= x² -10x + 34

Thus, the missing term in the provided quadratic equation is 10x if the roots of a quadratic equation are 5 ± 3i.

Learn more about the complex number here:

brainly.com/question/10251853

#SPJ1

6 0
2 years ago
Over the past ten years, the town's population doubled in size. The population is currently 12,000. What was the population ten
Sidana [21]
I think the answer is <span>2P = 12,000 but I might be wrong

</span>
8 0
3 years ago
Other questions:
  • QUESTION 2 Brewsky's is a chain of micro-breweries. Managers are interested in the costs of the stores and believe that the cost
    11·1 answer
  • naomi needs to solve 28 ÷ 7 = ?what related multiplication fact can she use to find the unknown number?
    15·1 answer
  • There is a strong positive linear correlation between rainfall and the number of peaches a tree produces. does this mean that mo
    6·1 answer
  • What is an algebraic expression for the word phrase the product of 11 and a number s?
    12·1 answer
  • Line segment BD is a diameter of circle E. What is the measure of arc ?
    12·2 answers
  • Elizabeth is 11 meters into the race after 4 seconds but is only 13 meters in after 12 seconds (her tricycle is slow because she
    8·2 answers
  • Solve 1 to 3.3 divided by 9 and 1/2 3.3 * 9 ​
    8·1 answer
  • 3( 5x+10x -2)=<br> I NEED HELP
    14·2 answers
  • PLS someone help me find the slope it’s my last question
    6·1 answer
  • A colony of 100 bacteria doubles in size every 60 hours what will the population be 180 hours from now
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!