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3 years ago

Does the parabola with equation x2 + 5x +9=0 have real or imaginary roots?

Mathematics

1 answer:

vesna_86 [32]3 years ago

7 0

Answer:

b2-4ac , ans is negative . Should have no real roots .

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Assume that in October of a particular year about 215 billion text messages were sent or received in the US, and the prediction

Julli [10]

Answer:

There will be $243$ billion messages sent or received in November.

Step-by-step explanation:

Given.

Number of text messages sent or received $=215$ billion.

Increment on the very next month $=13\%=\frac{13}{100}=0.13$

Lets find what is $13\%\ of\ 215$

⇒ $13\%\ of\ 215$

⇒ $0.13\times 215=27.95$

So we will add this value to our previous months data.

Now

Number of text messages sent in the month of November $=(27.5+215)=242.95$ billion.

Rounding to the nearest tenth the answer will be $243$ billion.

So $243$ billion text messages were sent or received in November.

5 0

3 years ago

Stan evaluated a function with a value and got 3 as the result. He wrote the entire process as a sentence: The function , when e

grandymaker [24]

The answer is f(x)=x²+2x when evaluated with -3 gives you the value of 3

4 0

2 years ago

A robot can complete 4 tasks in 3/5 hour. Each task takes the same amount of time. a. How long does it take the robot to complet

egoroff_w [7]

Answer:

A. It takes the robot 3/20 hour to complete one task

B. The robot can complete 6 2/3 task in on hour

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Find the value of x<br><br> 3/4 x-4=8

Vesna [10]

Answer: x = 16

Step-by-step explanation:

Solve for x by simplifying both sides of the equation, then isolating the variable. :)

7 0

2 years ago

If you could help I would really appreciate it, but if not that’s fine. Thank you.

tigry1 [53]

Since 6 is greater than 5 you input it into the last equation!

2•(6^2) -7
2•(36) -7
72 -7
65

The answer is 65!

5 0

3 years ago