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Nostrana [21]
3 years ago
9

(ab - 9)(ab + 8) please simplify for me

Mathematics
1 answer:
Ahat [919]3 years ago
5 0

1. Use the FOIL method: (a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d)=ac+ad+bc+bd(a+b)(c+d)=ac+ad+bc+bd

a​^2​​b​^2​​+8ab−9ab−72

2. Collect the like terms

a^2b^2+(8ab−9ab)−72

3. Simplify

a^2b^2-ab-72

Hope this helps




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x = ±4 (reject - 4 since length > 0)

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The money collected from selling bacon at a butcher store is given by the function f(x) = 3.55x – 4, where f(x) is the sales rev
Helga [31]

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See below under "Explanation".

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>

Functions

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify given.</em>

<em />\displaystyle f(x) = 3.55x - 4

\displaystyle x = \{ 17, 21, 24, 34 \}

<u>Step 2: Find Profit</u>

To find the <em>profit</em> the store makes each day, we <em>input</em> the number of customers that visited the store each day into our given function:

For the day that had 17 customers:

\displaystyle\begin{aligned}f(17) & = 3.55(17) - 4 \\& = 60.35 - 4 \\& = \boxed{56.35} \\\end{aligned}

∴ the butcher store made $56.35 when <em>17 customers</em> visited the store.

For the day that had 21 customers:

\displaystyle\begin{aligned}f(21) & = 3.55(21) - 4 \\& = 74.55 - 4 \\& = \boxed{70.55} \\\end{aligned}

∴ the butcher store made $70.55 when <em>21 customers</em> visited the store.

For the day that had 24 customers:

\displaystyle\begin{aligned}f(24) & = 3.55(24) - 4 \\& = 85.2 - 4 \\& = \boxed{81.2} \\\end{aligned}

∴ the butcher store made $81.20 when <em>24 customers</em> visited the store.

For the day that had 34 customers:

\displaystyle\begin{aligned}f(34) & = 3.55(34) - 4 \\& = 120.7 - 4 \\& = \boxed{116.7} \\\end{aligned}

∴ the butcher store made $116.70 when <em>34 customers</em> visited the store.

---

Learn more about functions: brainly.com/question/27710450

Learn more about Algebra I: brainly.com/question/27710380

---

Topic: Algebra I

3 0
2 years ago
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