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Bas_tet [7]
3 years ago
14

Find the solution for the following equation using the algebraic method: 3x^2+10x=8

Mathematics
1 answer:
likoan [24]3 years ago
6 0
The answer should be 0.875.
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Why is -a² is always negative (a ≠ 0) and why is (-a)² is always positive?
hjlf
-a^2=(-1)\cdot a\cdot a

Regardless of the sign of a, we have a\cdot a=a^2\ge0 (never negative). But multiplying by -1 makes it negative.

On the other hand,

(-a)^2=((-1)\cdot a)^2=(-1)^2\cdot a^2=1\cdot a^2=a^2

which can never be negative for real a.
6 0
3 years ago
I'M IN A TIMED TEST... HELP PLZ!!!The volume of this sphere is StartFraction 500 pi Over 3 EndFraction cubic inches. What is its
Mrac [35]

Answer:

It's B ( just did it )

Step-by-step explanation:

Looked up the answer real quick and the person had the same question with a picture.

It's on Ed2020 it's B

8 0
3 years ago
Read 2 more answers
Simplifying expressions without negative exponents with variales
Olin [163]
Multiply (or distribute) the exponent outside the parenthesis with every exponent inside the parenthesis, remember that if there is no exponent shown, then the exponent is 1. Step 3: Apply the Negative Exponent Rule. Negative exponents in the numerator get moved to the denominator and become positive exponents.
7 0
3 years ago
Find the slope of any line parallel to the lien through the given points (3,2),(3,1)
Alborosie

Answer:

m = undefined

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>

  • Coordinates (x, y)
  • Parallel lines have the same slope but different y-intercepts
  • An undefined line is a vertical line
  • Slope Formula: \displaystyle m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (3, 2)

Point (3, 1)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

  1. Substitute in points [Slope Formula]:                                                            \displaystyle m=\frac{1-2}{3-3}
  2. [Fraction] Subtract:                                                                                         \displaystyle m=\frac{-1}{0}
  3. Simplify:                                                                                                          m = undefined
8 0
3 years ago
Does anyone know how to do this?
Elanso [62]

~Shoto Todoroki here~

Answer:

( n − 2 ) × 180

Step-by-step explanation:

The formula for calculating the sum of interior angles is ( n − 2 ) × 180 ∘ where is the number of sides. All the interior angles in a regular polygon are equal. The formula for calculating the size of an interior angle is: interior angle of a polygon = sum of interior angles ÷ number of sides.

hope this helps :))

5 0
2 years ago
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