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yaroslaw [1]
3 years ago
14

URGENT!!! WILL AWARD ALL POINTS Which expression is equivalent to sin(2β)sinβ for all values of β for which sin(2β)sinβ is defin

ed?
Select the correct answer below:


2sin2β−tan2β

cot2β−2cos2β

1−tan2β

csc2β−2

2cosβ
Mathematics
1 answer:
noname [10]3 years ago
6 0

Answer:

sin2b sin b

2 sin b cos b sin b

2 cos b sin^2 b

1−cos2b cos b

1- (2cos^2 b−1) cosb

<u>2 cos beta</u>

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Mr. Parker has 982 pounds of grain. He feeds 240 pounds ro his pigs and 460 to his cows. How much grain does he have left
denpristay [2]

Starting amount: 982 pounds of grain

Since Mr. Parker fed 240 pounds of grain to his pigs, subtract 240 pounds from 982 pounds of grain.

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The volume of a cube is 512 cm on the side length of the cube and drag the correct length to the empty box
ddd [48]

Answer:

a = 8 cm

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

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Geometry</u>

Volume of a Cube Formula: V = a³

  • <em>a</em> is a side length

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify variables</em>

<em>V</em> = 512 cm³

<u>Step 2: Find </u><em><u>a</u></em>

  1. Substitute in variables [Volume of a Cube Formula]:                                    512 cm³ = a³
  2. [Equality Property] Cube root both sides:                                                      8 cm = a
  3. Rewrite:                                                                                                             a = 8 cm
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Which statement describes the graph of the system of equations below? 1.5x+0.2y=2.68
Pavlova-9 [17]

Answer:

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Step-by-step explanation:

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