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

According to data, as education level increases the unemployment rate decreases. This is an example of

Crank

I don’t think I just want points

5 0

2 years ago

Find the area of trapezoids. Please!!!!!!!!!!

bulgar [2K]

Blue is 42 and green is 30

3 0

3 years ago

Read 2 more answers

Use the drop-down menus to identify the parts of the pyramid.

sveticcg [70]

Answer:

D corresponds to the base.

Ethire C or A corresponds to the height.

I'm sorry, that's all I know. I'm new to this kind of math.

Step-by-step explanation:

4 0

3 years ago

Whats the answer? A, B, C, or D?

Firdavs [7]

The answer is the second choice.

P (pounds) = 5D (Dollars)

Hope this might help!

3 0

3 years ago

At the beginning of an experiment, the number of bacteria in a colony was counted at time t=O. The number of bacteria in the col

yan [13]

Answer:

1092

Step-by-step explanation:

We have been given that the number of bacteria in the colony t minutes after the initial count modeled by the function $B(t)=9(3)^t$ . We are asked to find the average rate of change in the number of bacteria over the first 6 minutes of the experiment.