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3 years ago

6

What indicators predict that a quadratic function will have a complex solution?

1 answer:

zysi [14]3 years ago

8 0

The nature of the roots can be determined by the determinant of the equation. The determinant is:
b² - 4ac

If this is positive, there are two roots
If this is 0, there is only one root
If this is negative, there are complex roots

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Samantha drives 2,100 miles each week how many miles does she drive in 4 weeks

adelina 88 [10]

Answer:8,400 miles

Step-by-step explanation: You would do 2,100•4 because you are driving 2,100 miles a week and there are 4 weeks you would have to times the amount of miles by how many weeks

6 0

4 years ago

Read 2 more answers

Find the ratio as simply as possible in the form a : b.

Charra [1.4K]

<h2>>> Answer </h2>

_________

$\:$

$3 \frac{1}{2} : 1 \frac{1}{7}$

$= \frac{3 \frac{1}{2} }{1 \frac{1}{7} }$

$= \frac{ \frac{7}{2} }{ \frac{8}{7} }$

$= \frac{7}{2} \times \frac{7}{8}$

$= \frac{49}{16}$

$= 49 : 16$

7 0

3 years ago

The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and

lawyer [7]

Functions can be used to model real life situations.

The hose is 3.2 feet above the ground, at a horizontal distance of 4 fee

The function is given as:

$f(x) =-0.3x^2 + 2x$

At a horizontal distance of 4 feet, the value of x is 4

i.e. $x = 4$

Substitute 4 for x in f(x).

So, we have:

$f(4) =-0.3(4)^2 + 2(4)$

Evaluate the exponent

$f(4) =-0.3(16) + 2(4)$

Open both brackets

$f(4) =-4.8 + 8$

Add -4.8 and 8

$f(4) =3.2$

Hence, the hose is 3.2 feet above the ground

Read more about functions at:

brainly.com/question/10837575

7 0

3 years ago

kirill [66]

Answer: I think b=5

Step-by-step explanation:

3 0

3 years ago

The formula for any arithmetic sequence is an = a1 + d ( n - 1), where an represents the value of the n th term, a1 represents t

hoa [83]

10, 8, 6, 4,…
-2 -2 -2

a(n) = a₁ + d(n - 1)
a(n) = 10 - 2(n - 1)
a(n) = 10 - 2(n) + 2(1)
a(n) = 10 - 2n + 2
a(n) = -2n + 10 + 2
a(n) = -2n + 12

6 0

3 years ago