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
Jlenok [28]
3 years ago
7

Solve the inequality 2x2 + 10x < –8

Mathematics
1 answer:
BigorU [14]3 years ago
5 0

Answer:

-4<x<-1

Step-by-step explanation:

To solve the problem, we divide the whole expression by 2:

2x^2 + 10x < –8 → x^2 + 5x < –4

→  x^2 + 5x + 4 < 0

Factorizing

→ (x+4)(x+1) < 0

The expression is ONLY negative when:

x>-4 and x<-1

Therefore, the solution is:

-4<x<-1

You might be interested in
Help me please (I need the answer asap...)
Roman55 [17]
Answer: x = 6
x+x=19-7
2x=12
Hence the answer is x=6
5 0
2 years ago
Read 2 more answers
The community center has a pottery class each month. Each student pays $15 for the class and $27 for materials. This month the p
user100 [1]
15x+27x=714
42x=714
X=17
5 0
2 years ago
Th<br> Write an<br> explicit formula for<br> ans<br> then<br> term of the sequence 40,50,60, ....
kenny6666 [7]
<h3>Answer:   a_n = 10n+30</h3>

n starts at 1, and n is a positive whole number (1,2,3,...)

======================================================

Explanation:

The sequence is arithmetic with first term 40 and common difference 10. Meaning we add 10 to each term to get the next one.

--------

a1 = 40 = first term

d = 10 = common difference

a_n = a_1 + d(n-1)\\\\a_n = 40 + 10(n-1)\\\\a_n = 40 + 10n-10\\\\a_n = 10n + 30\\\\

is the general nth term of this arithmetic sequence

Plug in n = 1 and you should get a_1 = 40

Plug in n = 2 and you should get a_2 = 50

and so on

6 0
3 years ago
To join a Yoga club there is a $100 annual fee and a $5 fee for each class you attend. Identify each of the following:
d1i1m1o1n [39]

Answer

m=5

x=100

so it will be y=5x+100

Step-by-step explanation:

4 0
2 years ago
Help! How Can I Determine the interval in which the function is increasing.
Anuta_ua [19.1K]

Answer:

(2,\infty)

Step-by-step explanation:

After x=2, we see that the change in y over the change in x is positive since both variables increase with each other, so (2,\infty) is where the function is increasing.

3 0
2 years ago
Other questions:
  • The population of a city was 162 thousand people and it was expected to raise 1.4%
    11·2 answers
  • Can a polynomial have a zero as a term
    5·1 answer
  • Larina recieved a $50 gift card to an online store. She wants to purchase some bracelets that cost $8 each. There will be a $10
    11·1 answer
  • 20 sixth graders were asked: How many potted plants are in your home. Draw a histogram to represent the data, which is shown bel
    9·1 answer
  • The sum of y and 20 is less than 37
    8·1 answer
  • How can you use a bar diagram to check the accuracy of the solution to a ratio or rate problem
    8·1 answer
  • Explain the translation shown in the picture below
    7·1 answer
  • 50 POINTS! Could someone answer these 3 questions? <br><br> I’ll mark Brainliest
    15·1 answer
  • HELPPPPO THIS IS DUE TOMORROW!
    5·1 answer
  • Limited trigonometry
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!