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Novosadov [1.4K]
2 years ago
10

X2 + 1+ x – 2 what is the answer

Mathematics
2 answers:
Vika [28.1K]2 years ago
6 0
It depends on what x is equal to. For example, if x = 3, your equation is 3 * 2 + 1 + 3 - 2 = 8.
Pani-rosa [81]2 years ago
5 0
Add like terms. X2 which is 2 times x. And 1 minus 2.

3x+1-2
3x-1
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Work out the area of this circle. Take pi to be 3.142 and give your answer to 1 decimal place
Rashid [163]

Step-by-step explanation:

<em>I think you have forgotten to attach the question. </em>

<em>Anyways....</em>

In order to find the area of a circle use the formula:

πr^{2}   Where r is the radius

For example the radius is 3cm. The area of the circle will be:

π × 3^{2}

Since you have taken pi as 3.142...

3.142 × 3^{2}

3.142  × 9

= 28.278

In order to find the answer to 1 decimal place, check the number next to the number right after the decimal. Is it a number greater than or equal to 5? then add +1 to the number.

= 28.3 cm^{2}

8 0
2 years ago
In a certain country, the car license plate formed by 4 numbers from the digits 1-9 followed by 3 letters from the alphabet. How
andriy [413]

Answer:

78,624,000 license plates

Step-by-step explanation:

For each of the 4 numbers, we have the following possibilities:

First number: 10 digits possible

Second number: 9 digits possible (one used)

Third number: 8 digits possible (two used)

Fourth number: 7 digits possible (three used)

For each of the 3 letters, we have the following possibilities:

First letter: 26 digits possible

Second letter: 25 digits possible (one used)

Third letter: 24 digits possible (two used)

The total number of license plates is the product of all these possibilities:

Number of plates = 10 * 9 * 8 * 7 * 26 * 25 * 24 = 78,624,000 license plates

7 0
2 years ago
2 is multiplied by a number.
iragen [17]

Answer:

let anumber be x so

2*x=2x

Step-by-step explanation:

4 0
2 years ago
A coordinate plane with a straight line passing through the points (negative 6, negative 8) and (2, 8).
gizmo_the_mogwai [7]

Answer:

2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Help differentiate this
Arte-miy333 [17]

Answer:

\displaystyle y' = 20x^3 + 6x^2 + 70x + 9

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients
  • Expand by FOIL
  • Functions
  • Function Notation

<u>Calculus</u>

Derivatives

Derivative Notation

Derivative Property [Multiplied Constant]:                                                              \displaystyle \frac{d}{dx} [cf(x)] = c \cdot f'(x)

Derivative Property [Addition/Subtraction]:                                                            \displaystyle \frac{d}{dx}[f(x) + g(x)] = \frac{d}{dx}[f(x)] + \frac{d}{dx}[g(x)]

Basic Power Rule:

  1. f(x) = cxⁿ
  2. f’(x) = c·nxⁿ⁻¹  

Derivative Rule [Product Rule]:                                                                                \displaystyle \frac{d}{dx} [f(x)g(x)]=f'(x)g(x) + g'(x)f(x)

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

<em />\displaystyle y = (x^3 + 7x - 1)(5x + 2)<em />

<em />

<u>Step 2: Differentiate</u>

  1. Product Rule:                                                                                                    \displaystyle y' = \frac{d}{dx}[(x^3 + 7x - 1)](5x + 2) + (x^3 + 7x - 1)\frac{d}{dx}[(5x + 2)]
  2. Basic Power Rule [Derivative Property - Addition/Subtraction]:                   \displaystyle y' = (3x^{3 - 1}+ 7x^{1 - 1} - 0)(5x + 2) + (x^3 + 7x - 1)(5x^{1 - 1} + 0)
  3. Simplify:                                                                                                             \displaystyle y' = (3x^2+ 7)(5x + 2) + 5(x^3 + 7x - 1)
  4. Expand:                                                                                                             \displaystyle y' = 15x^3 + 6x^2 + 35x + 14 + 5(x^3 + 7x - 1)
  5. [Distributive Property] Distribute 5:                                                                 \displaystyle y' = 15x^3 + 6x^2 + 35x + 14 + 5x^3 + 35x - 5
  6. Combine like terms:                                                                                         \displaystyle y' = 20x^3 + 6x^2 + 70x + 9

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit: Derivatives

Book: College Calculus 10e

4 0
2 years ago
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