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Reil [10]
3 years ago
10

State sales tax y is directly proportional to retail price x.

Mathematics
1 answer:
jeka943 years ago
5 0
How am I supposed to know..... you think I'm smart.
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Which of the following is a root of the polynomial function below
VMariaS [17]

Answer:

A) 2 + i

Step-by-step explanation:

F(x) = x^3 - 3x^2 + x + 5

0 = x^3 - 3x^2 + x + 5

0 = (x+1)(x^2 - 4x + 5)

Great, now we can separate these two parenthesis expressions because of the Zero Product Property. Start with the simple one:

0 = x + 1

<u>x = -1</u>

We have our first real root! But it doesn't look like that's one of the answer choices, so move on to the other expression:

0 = (x^2 - 4x +5)

This expression can't be factored, so we will use the quadratic formula (which is x = \frac{-b+-\sqrt{b^{2}-4ac }  }{2a}).

First solve for the positive part:

= (4 + sqrt(16-20)) / 2

  = 4 + sqrt(-4) / 2

  = 4 + 2i / 2

  <u>= 2 + i</u>

Then for the negative part:

= (4 - sqrt(16-20)) / 2

  = 4 - sqrt(-4) / 2

  = 4 - 2i / 2

  <u>= 2 - i</u>

<u></u>

<u>2 + i</u> is answer choice A! Our other roots, <u>2 - i</u> and <u>-1</u>, aren't answer choices.

8 0
3 years ago
Please help i will do branily
Colt1911 [192]
For the first question the answer would be 1/3 divided by 3 for the second question it would be units of 1 divided into 9 equal parts
5 0
2 years ago
Read 2 more answers
34. I need to know how to write the equation in slope-intercept form and graph it. My biggest question is how to write it in slo
vagabundo [1.1K]
Maybe it’s y=1x-2. I hope this helps since we have no clue what the x is in the question we just assume it’s own
8 0
3 years ago
A cab company charges $0.80 per mile plus $2 for tolls. Melissa has at most $16 to spend on her cab fare. Write and solve an ine
Anna35 [415]

Answer:

The maximum distance is 17.5 miles

No she can't make to the airport.

Step-by-step explanation:

Given the cab charges $0.8 per mile and $2 for tolls.

let the miles travelled by melissa be x.

The total charge is $(0.8*x+2)

Now given that she can spend a maximum of $16

so the inequality is

0.8*x+2\leq 16

0.8*x\leq 14

x\leq \frac{14}{0.8}

x\leq 17.5

Therefore the maximum distance she can travel is 17.5 miles

Since the distance to airport is 25 miles which is greater than 17.5 miles she cannot afford the cab.

3 0
3 years ago
6 = a divided by 4 + 2
lyudmila [28]

Answer:

36

Step-by-step explanation:

8 0
3 years ago
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