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jeka94
3 years ago
15

Of the following, which is the solution to 2x2 + 3x = −5?

Mathematics
1 answer:
Anna11 [10]3 years ago
5 0
2x2 + 3x = –5? 2x^2+3x+5 =0
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Given the system
Irina-Kira [14]

we have

y > -2 x + y < 4

using a graph tool

see the attached figure

The shaded area is the solution of the system

<u>Part 1) </u>Name an ordered pair that is a solution to this system and explain how you know that this is a solution point

Let

A ( -40,20)

The point A is solution of the system because the point lie on the shaded area

<u>Check</u>

If the point A is solution of the system must satisfy both system inequalities

point A

x=-40

y=20

substitute

y > -2-------> 20 > -2-------> is ok

x + y < 4----> -40+20 < 4-----> -20 < 4-----> is ok

therefore

<u>the answer Part 1) is</u>

The point A is a solution of the system

Part 2) Name an ordered pair that is not a solution to the system and explain how you know that it is not a solution

Let

B(20,20)

The point B is not solution of the system because the point not lie on the shaded area

<u>Check</u>

If the point B is not solution of the system must not satisfy both system inequalities

point B

x=20

y=20

substitute

y > -2 -------> 20 > -2-------> is ok

x + y < 4---->20+20 < 4-----> 40 < 4------> is not ok

therefore

<u>the answer part 2) is</u>

The point B is not a solution to the system

6 0
3 years ago
Amanda went into the grocery business starting with five stores. After one year, she opened two more stores. After two years, sh
e-lub [12.9K]

Answer: The answer would be y = 2x, with x being the number of stores she added the year before.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Will the product be greater or less then each factor? 56.9×2.01
g100num [7]
Hmmmt that’s a good question
8 0
3 years ago
Can someone help me out with these problems and show work please !!
AVprozaik [17]

Answer:

13. 10a^4b²

14. -5y³ + 35y² - 10y

Step-by-step explanation:

Question 13:

(5a³b) (2ab) =

=10a^4b²

Question 14:

5y (-y² + 7y - 2) =

= -5y³ + 35y² - 10y

Hope this helps!

5 0
1 year ago
-1,<br> Calculate the 16th term in the Geometric Sequence:<br> 3,-9, 27, ....
IgorLugansk [536]

Answer:

=1y -2z

Step-by-step explanation:

3 0
2 years ago
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