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Alexxandr [17]
3 years ago
6

What is x2 + 2x + 9 = 0

Mathematics
1 answer:
vova2212 [387]3 years ago
4 0

Answer:

x has no real solution

Step-by-step explanation:

Our equation is qudratic equation so the method we will follow to solve it is using the dicriminant :

  • Let Δ be the dicriminant
  • a=1
  • b=2
  • c=9
  • Δ= 2²-4*1*9 =4-36=-32
  • we notice that Δ≤0⇒x has no real solution

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At CD Shack, all used CDs are the same price. Jesse spent $54 and Mimi spent $66 on used CDs. What is the most each used CD coul
Alinara [238K]
Hey there
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The correct answer is
Whatever each CD costs, what each person paid is that cost times the number of CDs purchased (no sales tax for this problem).
So, the price of one CD is a factor of $66 (a number of $ that divides $66 evenly).
In theory, it could be $1, $2, $3, $6, $11, $22, $66.
It could even be $0.50, $0.25, $0.20, $0.10, $0.05,...
Also, the price of one CD must be a factor of $54. such as $54,$27,$18,$9,$6,$3,$2,$1,... .
You are looking for the most that price could be.


The grew greatest price that is in both lists is $6.

How can you make those lists?
You can start with the total price, then the price divided by 2, by 3, by whatever whole number you can divide it.

Otherwise, you could find the greatest common factor of 66 and 54
from the prime factorization of both numbers.
___________________
Hope this helps you
5 0
3 years ago
Chuck is taking his kids to the store to buy new Converse shoes. He is given a choice of high tops or low tops. They may choose
monitta

Answer:

the possible outcome are two but don't trust me on that

8 0
2 years ago
-2(x+6)+3= -11x+4(x+4)
Katarina [22]
Distribute 
-2(x+6)+3
-2x-12+3
-2x-12+3=-11x+4(x+4)
Distribute 
4(x+4)
4x+16
-2x-12+3=-11x+4x+16
Combine Numbers && Variables 
-2x-9=-7x+16
Add The 7 Over To The -2x 
5x-9=16
Add 9 Over To 16 
5x=25
x=5 
So 5 Is Your Answer

~Hope This Helps :)
Need More Help With Question Just Inbox Me 
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3 0
3 years ago
The number of people who attended a school's last six basketball games increased as the team neared the state sectional games. T
Thepotemich [5.8K]

The function will be a (linear function) linear equation in two variable and the equation of the function is y = 87x  - 783

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have given data:

Game(x):              13      14     15      16       17     18

Attendance(y):    348   435  552  609   696  783

If plot these points on a coordinate plane, we will see these points will align in a straight line.

We know we can find a line equation with two points:

(13, 348) and (14, 435)

\rm (y - 435) = \dfrac{435-348}{14-13}(x-14)

y - 435 =87(x-14)

y = 87x  - 783

Thus, the function will be a (linear function) linear equation in two variable and the equation of the function is y = 87x  - 783

Learn more about the linear equation here:

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7 0
2 years ago
Factor this trinomial completely.<br> 2x^2 + 10x + 8
Nikitich [7]
2x^2 + 10x + 8
=2( x + 1) (x + 4)

7 0
3 years ago
Read 2 more answers
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