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irga5000 [103]
4 years ago
12

What’s the answer for this problem I’m very confused and stressed out with this problem

Mathematics
1 answer:
mariarad [96]4 years ago
7 0

Would it help if you wrote it as

\dfrac{x}{-11} = \dfrac{-3}{1} ?

Then you can cross multiply if you know how to do that.

1*x = (-11)(-3)

x = 33 but what happened to the 2 minus signs?

Remember that a ( - )  times a ( - ) = a plus. The two minus signs become a plus.

 

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Let f(x)=3x2+2x−3. What is f(3)?
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Answer:

f(3) = 30

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>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x² + 2x - 3

f(3) is x = 3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    f(3) = 3(3)² + 2(3) - 3
  2. Exponents:                          f(3) = 3(9) + 2(3) - 3
  3. Multiply:                               f(3) = 27 + 6 - 3
  4. Add:                                     f(3) = 33 - 3
  5. Subtract:                              f(3) = 30
4 0
3 years ago
ANSWER ASAPPPPPPPP
kkurt [141]
<span>Given:
Q = 7m + 3n,
R = 11 - 2m,
S = n + 5,
T = -m - 3n + 8.

Simplify Q - [R + S] - T.

Q-(R+S)-T
=</span>7m + 3n - (11 - 2m + n + 5 ) - (-m - 3n + 8)
=7m+2m+m  +  3n-n+3n  -11-5-8
=10m+5n-24
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400 is the correct answe
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