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stira [4]
3 years ago
9

How to simplify -5(9-2w)

Mathematics
1 answer:
mariarad [96]3 years ago
4 0

-5 (9-2w) -45+10w You just multiply -5 and 9, then you multiply -5 and -2w and you get your answer.

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A triangle has sides with lengths of 60 feet, 63 feet, and 87 feet. Is it a right triangle?
Sedaia [141]

Answer:

Yes

Step-by-step explanation:

We can use the Pythagorean Theorem to check if this triangle is a right triangle:

a^2+b^2=c^2

Note that a and b are the legs of the triangle and c is the hypotenuse:

Substitute the lengths of the sides into the equation:

60^2+63^2=87^2

3600+3969=7569\\7569=7569

Therefore this triangle is a right triangle.

3 0
2 years ago
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Simplify the following expression (-5x + 6x2) - (6x2 – 5x)
Nookie1986 [14]

Answer:

0

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

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

(-5x + 6x²) - (6x² - 5x)

<u>Step 2: Simplify</u>

  1. [Distributive Property] Distribute negative:                                                    -5x + 6x² - 6x² + 5x
  2. [Subtraction] Combine like terms (x²):                                                             -5x + 5x
  3. [Addition] Combine like terms (x):                                                                   0
5 0
3 years ago
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(1008.5)(2) pleasee helpp
nikdorinn [45]

Answer:

2,016.4

Step-by-step explanation:

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3 years ago
Solve the quadratic equation.
tamaranim1 [39]

Answer:

D 1 and -1

Step-by-step explanation:

8 {x}^{2}  + 16x + 8 = 0

divided by 8

{x}^{2}  + 2x + 1 = 0

(x+1)(x+1)=0

so x=+-1

4 0
3 years ago
Which statement describes the graph of the system of equations?
qwelly [4]

Answer:

The lines are parallel.

Step-by-step explanation:

The first line is x-y=1

In slope-intercept form, this line has equation: y=x-1

The second line is y-x=1

In slope-intercept form, the line has equation: y=x+1

The slopes of the two lines are the same (m=1)

however, the y-intercepts of these lines are different (-1) and (+1) respectively.

The first choice is correct.

The two lines are parallel and hence will never intersect.

8 0
3 years ago
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