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2 years ago

Evaluate f(x) = 4x + 3x^2 − 5 when x = -2. 23 -1 -25 -49

Mathematics

1 answer:

frozen [14]2 years ago

5 0

Answer:

f(-2) = -1

Step-by-step explanation:

One way of doing this is to substitute -2 for x in every place where x shows up:

f(x) = 4x + 3x^2 − 5 → f(-2) = 4(-2) + 3(-2)^2 − 5

→ f(-2) = -8 + 3(4) - 5, or f(-2) = 4 - 5, or f(-2) = -1

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2 years ago

I REALLY NEED HELP HURRY ITS DUE IN 5 MINS BOTH QUESTIONS

erik [133]

Answer:

(2. 16/24) (3. 0 (because there are no green shirts))

Step-by-step explanation:

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2 years ago

Read 2 more answers

Solve for x. Round your answer to two decimal places. Show your work for full credit.

omeli [17]

Answer:

x ≈ 14.30

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Trigonometry

sin∅ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Define variables

∅ = 39°

opposite leg = 9

hypotenuse = x

Step 2: Solve for x

Substitute: sin39° = 9/x
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2 years ago

Which equation in point slope form is shown in the graph below

oee [108]

Answer:

Step-by-step explanation:

I know that its correct because I got it correct

it should equal to y=-2/7x+13/7

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2 years ago

The total cost for buying new sneakers for the basketball team an be found by using the function y=25x + 65, is where x is the n

gtnhenbr [62]

Answer:

$Domain\ =\ \{x: 9,10,11....16\}$

$Range\ =\ \{y:290, 315,340.....465\}$

Step-by-step explanation:

Given

$y = 25x + 65$

Required

Determine the range and domain when x = 9 to 16

The domain is the set of

$Domain\ =\ \{x: 9,10,11....16\}$

Solving for the range;

When x = 9

$y = 25 * 9 + 65$

$y = 225 + 65$

$y = 290$

When x = 10

$y = 25 * 10 + 65$

$y = 250 + 65$

$y = 315$

When x = 11

$y = 25 * 11 + 65$

$y = 275 + 65$

$y = 340$

You continue till you get to x = 16

---

--

-

When x = 16

$y = 25 * 16 + 65$

$y = 400 + 65$

$y = 465$

Hence; the range is

$Range\ =\ \{y:290, 315,340.....465\}$

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2 years ago