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Advocard [28]
3 years ago
9

(6x2 - 10x +9)+(-5x2 + 9x-5)=

Mathematics
1 answer:
arsen [322]3 years ago
6 0

Answer:

x² - x + 4

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

(6x² - 10x + 9) + (-5x² + 9x - 5)

<u>Step 2: Simplify</u>

  1. Combine like terms (x²):                                                                                x² - 10x + 9 + 9x - 5
  2. Combine like terms (x):                                                                                  x² - x + 9 - 5
  3. Combine like terms (Z):                                                                                     x² - x + 4
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so, you can choose any time you want, and for each time, the car will be in a different position, so the position is a variable dependent of the time.

let's suppose you don't know the velocity of the car.

first you see the position at a time t₁ and the position is r₁.

then you see the position at time t₂, and the result is r₂.

here you changed the independent variable and observed how the dependent variable changed. And in this case, with the 4 numbers you observed you can obtain the velocity of the car.

So yes, you can call it an experiment.

3 0
4 years ago
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A flying disc has a radius of 10 inches. What is the area of one side of the flying disc to the nearest square inch? Use 3.14 as
oksano4ka [1.4K]

<u>Answer:</u>

The area of one side of a disc is 314 square inches  

<u>Explanation:</u>

Given the radius of the disc is 10 inches

The disc is in circular shape and the area of a circle is determined by

A = \pi r^2, where

A is the area and r is the radius and π = 3.14

Substituting values in the formula,

A = 3.14 \times(10)^2

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3 years ago
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HELP PLSSS I NEED THIS ASAP
Kamila [148]

Multiplying the linear expressions, the correct sequence is given as follows:

  • 5x(-3 -7x)
  • (5x)(-3) + (5x)(-7x)
  • -15x - 35x²

<h3>How are linear expressions multiplied?</h3>

They are multiplied applying the distributive property, in which all the terms are multiplied and the like terms are combined.

Hence:

5x(-3 -7x)

(5x)(-3) + (5x)(-7x)

-15x - 35x²

Hence the last option is correct.

More can be learned about the multiplication of linear expressions at brainly.com/question/14758247

#SPJ1

8 0
2 years ago
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