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timurjin [86]
3 years ago
6

Simplify the expression. 9r + 3r2 – 5r + 7

Mathematics
2 answers:
vitfil [10]3 years ago
7 0

9r + 3r^2 – 5r + 7

Combine like terms:

9r -5r = 4r

Simplified expression:

3r^2 + 4r +7

GuDViN [60]3 years ago
7 0

9r + 3r ^ 2 - 5r + 7

Combine termos semelhantes:

9r -5r = 4r

Expressão simplificada:

3r ^ 2 + 4r +7

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If you use the real Pi , 3.140625 , from a real ratio 201 /64 , you would get 37.6875 inches . All ruler measurements like 1/2 , 1/4, 1/8 ,1/16 … is where the last decimal integer ends in 5 , just like the real Pi . If you use the present day Pi , your decimal integer circumference length keeps getting ever smaller , 10 , 100 , 1000 … in this case you would have a shrinking diameter . You are better off using the real Pi, that i have proven with Quora. Richard Eicholtz
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Related Questions (More Answers Below)
8 0
3 years ago
Gill makes 3 brackets and Mika makes 2
Jet001 [13]

Answer:

The LCM is 6

Finding the LCM will make them make the same number of brackets.

6 0
3 years ago
42= -7 (z - 3)<br> z = ?
BartSMP [9]

Answer:

z = -3

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>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Distributive Property

Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify.</em>

42 = -7(z - 3)

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

  1. [Distributive Property] Distribute -7:                                                                42 = -7z + 21
  2. [Subtraction Property of Equality] Subtract 21 on both sides:                       21 = -7z
  3. [Division Property of Equality] Divide -7 on both sides:                                -3 = z
  4. Rewrite:                                                                                                             z = -3
5 0
3 years ago
Using the quadratic formula to solve 4x2 – 3x + 9 = 2x + 1
Oksanka [162]

Answer:

factorisation method

4x² - 3x + 9 = 2x + 1

4x² - 3x-2x +9-1 = 0

4x² - 5x + 8 = 0

sum = -5

product= 4x8

32

factors=(try to look for the numbers when added they give -5 a!d when multiplied they give 32

press the numbers in the position of -5

factorise

each blacket equal it to 0

and solve for the two values of x

8 0
3 years ago
177 ×44 Please hurry but take your time​
evablogger [386]

Answer:

7788

Step-by-step explanation:

177 x 44 is 7788

3 0
3 years ago
Read 2 more answers
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