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Debora [2.8K]
3 years ago
9

What is the discriminant of the polynomial below?2x + 47-9​

Mathematics
1 answer:
stepan [7]3 years ago
3 0

Answer:

x = -19

Step-by-step explanation:

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(x-6)(x+ 3) =<br><br><br> A. X^2 - 18<br> B. X^2 - 3x - 18<br> C. X^2 + 3x -18<br> D. X2 + 9x - 18
nlexa [21]

Answer:

x^2 - 3x - 18

Step-by-step explanation:

Just follow in terms of FOIL

First, outer, inner, last. First means multiply the terms which occur first in each binomial, Outer means multiply the outermost terms in the product, Inner means multiply the innermost terms, and Last means multiply the terms which occur last in each binomial.

4 0
3 years ago
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Determine the missing length using the Pythagorean theorem. Round the answer to the nearest tenth.
Daniel [21]
The answer is the first one which is 6 feet
5 0
3 years ago
In 2012 your car was worth $10,000. In 2014 your car was worth $8,850. Suppose the value of your car decreased at a constant rat
monitta

Answer:

The function to determine the value of your car (in dollars) in terms of the number of years t since 2012 is:

f(t) = 10000(0.9407)^t

Step-by-step explanation:

Value of the car:

Constant rate of change, so the value of the car in t years after 2012 is given by:

f(t) = f(0)(1-r)^t

In which f(0) is the initial value and r is the decay rate, as a decimal.

In 2012 your car was worth $10,000.

This means that f(0) = 10000, thus:

f(t) = 10000(1-r)^t

2014 your car was worth $8,850.

2014 - 2012 = 2, so:

f(2) = 8850

We use this to find 1 - r.

f(t) = 10000(1-r)^t

8850 = 10000(1-r)^2

(1-r)^2 = \frac{8850}{10000}

(1-r)^2 = 0.885

\sqrt{(1-r)^2} = \sqrt{0.885}

1 - r = 0.9407

Thus

f(t) = 10000(1-r)^t

f(t) = 10000(0.9407)^t

7 0
3 years ago
What's it take for someone to help me with this problem ;-;
Colt1911 [192]

Answer:

x = 8 degrees

Step-by-step explanation:

The thing in red says "vertically opposite"

3 0
3 years ago
What should replace x in the equation X/5 +2=7
miskamm [114]

Answer:

25

Step-by-step explanation:

25 divided by 5 is 5

5 + 2 = 7

7 0
3 years ago
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