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
Tatiana [17]
3 years ago
8

What is the problem to this a²+27a+72=0

Mathematics
2 answers:
zlopas [31]3 years ago
7 0
a^2+27a+72=0\\\\a^2+3a+24a+72=0\\\\a(a +3 )+24(a+3)=0\\\\(a+3)(a+24)=0\\\\a+3=0\ \ \vee \ \ a+24=0\\\\a=-3 \ \ \vee \ \ a=-24


Vinil7 [7]3 years ago
6 0
A² + 27a + 72 = 0
a = <u>-27 +/- √(27² - 4(1)(72))</u>
                     2(1)
a = <u>-27 +/- √(729 - 288)</u>
                     2
a = <u>-27 +/- √441
</u>                2
a = <u>-27+/- 21</u>
             2
a = <u>-27 + 21</u>        a = <u>-27 - 21</u>
             2                         2
a = <u>-6</u>                  a = <u>-48</u>
       2                           2
a = -3                  a = -24
<u />
You might be interested in
(08.06)The following data show the height, in inches, of 11 different garden gnomes:
Elodia [21]

Answer:

The correct statement is:

On average, the height of a garden gnome varies 3.2 inches from the mean of 6 inches.

Step-by-step explanation:

We are given a data of 11 gardens as:

2   9    1    23    3    7    10    2    10    9     7

Now on removing the outlier i.e. 23 (since it is the very large value as compared to other data points) the entries are as follows:

x         |x-x'|        

2          4              

9          3              

1           5              

3          3              

7           1                

10         4              

2           4              

10          4              

9           3              

7            1              

Now mean of the data is denoted by x' and is calculated as:

x'=\dfrac{2+9+1+3+7+10+2+10+9+7}{10}\\\\x'=\dfrac{60}{10}\\\\x'=6

Hence, Mean(x')=6

Now,

∑ |x-x'|=32

Now mean of the absolute deviation is:

\dfrac{32}{10}=3.2

This means that , On average, the height of a garden gnome varies 3.2 inches from the mean of 6 inches.

8 0
3 years ago
Photo above <br><br>please answer
alina1380 [7]
I THINK the answer would be around 2/3/4 paper clips, I'm not sure. And keep in mind, I;m not responsible for any wrong answers/ invalid responses.
5 0
3 years ago
A quadratic function with zeroes 1 and -9
baherus [9]

Answer:

(x-1)(x+9) or x^2 + 8x-9, if you simplify.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
If the area of a rectangle equals 30 cm² and the perimeter is equal to 26 cm. Find the length and width of the rectangle.​
Kamila [148]

Answer:

Length = 10 & width = 3

Step-by-step explanation:

Perimeter = Length + Length + Width + Width

26 = 2Length + 2 Width

26 = 2 ( Length + Width )

13 = Length + width

13 - Length = Width EQUATION 1

Area = Length X Width

30 = Length X ( 13 - Length )

30 = 13Length - Length ^2

Length ^2 - 13Length + 30 = 0

( Length - 3 )( Length - 10 )

Length = 3 or Length = 10

Therefore Length = 10

From equation 1

13 - Length = Width

13 - 10 = width

width = 3

8 0
1 year ago
Help! Will give BRAINLIEST!! 20 POINTS!
tankabanditka [31]
I got 2400 because 120 x 80 = 9600 divided by 4 = 2400 idk i may be wrong 
this is my sister's account she quit
8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the area of the circle
    14·1 answer
  • What is the equation for m is between -2 and 5
    6·1 answer
  • John withdraws $40.00 from her savings account each month. What integer represents the net effect on her balance after 5 months?
    6·1 answer
  • Which of the following describes a rigid transformation?
    6·2 answers
  • Can someone help pleaseee??
    11·2 answers
  • Help your girl out!!
    14·1 answer
  • Does anyone know what x - 12 = -2 is?
    15·1 answer
  • Standar form of 1.204751131
    9·1 answer
  • A water sample shows 0.071 grams of some trace element for every cubic centimeter of water. Cai uses a container in the shape of
    14·2 answers
  • Over what interval is the function in this graph constant
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!