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Levart [38]
2 years ago
9

Answer these 4 questions for brainliest! :)

Mathematics
1 answer:
Verdich [7]2 years ago
4 0

Answer: 1. X+2

2. 6x-3

3. -2x-1

4. 9x5

Step-by-step explanation:

1. X+4-3+1 There is only one variable, so you don’t need to worry about that. Just do all of the numerical operations. 4-3+1= 2. So it would be x+2

2. X-5+5x+2. Again, do the numerical operations first. -5+2=-3. X+5x=6x. So it would be 6x-3.

3. 2x+7-4x-8. 7-8=-1. 2x-4x=-2x. So it would be -2x-1.

4. (4+3)x+2x-5. Do the operation in the parenthesis first. Then it would be (7)x or just 7x+2x-5. Simplify to 9x-5.

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Given f(x) = -x – 4, find f(4).<br> I need help
Brums [2.3K]

Answer:

f(4) = -8

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) = -x - 4

f(4) is x = 4

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                  f(4) = -4 - 4
  2. Subtract:                            f(4) = -8
5 0
2 years ago
Triangle ABC is similar to Triangle DEF, AC=9x, BC=8, DF=18, and EF=x. Which of the following represents the length of AC.
kodGreya [7K]

The answer to your question is 4

7 0
3 years ago
Dana bikes 10 mi in 50 min.<br> <br> <br> <br> At this rate, how far can she bike in 90 min?
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8 0
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Patrick wants to play laser tag. It costs $9.00 per game and he gets a student discount of $10. Write an equation to represent t
Nana76 [90]

Answer:

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Step-by-step explanation:

Let x be the number of games

Cost of 1 game = $9

Cost of x games = 9x

he gets a student discount of $10.

So, Cost after discount = 9x-10

Let the total cost be T

So, T=9x-10

So, An equation to represent the total cost of playing laser tag including the discount is  T=9x-10

3 0
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mamaluj [8]
You write the problem as a mathematical expression
3x^2 + 30x + 75 =
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7 0
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