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pshichka [43]
3 years ago
8

Evaluate f(−3) for f(x)=2x2−x+5.

Mathematics
1 answer:
Natasha2012 [34]3 years ago
7 0

Answer: -4

Step-by-step explanation:

2(-3)*2-(-3)+5= -4

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What does n equal? btw this is 6th grade! also < Is between 3 and 5
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Answer:

n < 4

Step-by-step explanation:

\frac{1}{2} n+3

     -3     -3

\frac{1}{2} n < 2

divide  both sides by \frac{1}{2}

n < 4

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What is 34 divided by 65?
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Step-by-step explanation:

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a circle is centered at the point (5,-4) and it passes through the point (-3,2). the equation of this circle is (x+ )^2+(y+ )^2=
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The final equation is (x-5)^2 + (y+4)^2 = 10^2. 

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The floor of a rectangular deck has an area of 600 square feet. The floor is 20 feet wide. How long is the floor? A. 30 ft. B. 2
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Solve by using substitution. Express your answer as an ordered pair.
Deffense [45]

Answer:

(1, -2)

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

Equality Properties

<u>Algebra I</u>

  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

4x + y = 2

y = x - 3

<u>Step 2: Solve for </u><em><u>x</u></em>

<em>Substitution</em>

  1. Substitute in <em>y</em>:                    4x + (x - 3) = 2
  2. Combine like terms:           5x - 3 = 2
  3. Isolate <em>x</em> term:                     5x = 5
  4. Isolate <em>x</em>:                              x = 1

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                    y = x - 3
  2. Substitute in <em>x</em>:                       y = 1 - 3
  3. Subtract:                                 y = -2
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