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elena55 [62]
3 years ago
11

What is the solution to the equation by -2(y + 1) = 3(y – 2) + 6?

Mathematics
2 answers:
Oxana [17]3 years ago
7 0

Answer:

<h3>\boxed{ \bold{ \boxed{ \sf{ y =  - 0.4}}}}</h3>

Step-by-step explanation:

\sf{ - 2(y + 1) = 3(y - 2) + 6}

Distribute -2 through the parentheses

Similarly, Distribute 3 through the parentheses

⇒\sf{ - 2y - 2 = 3y - 6 + 6}

Since two opposites add up to zero , remove them

⇒\sf{ - 2y - 2 = 3y}

Move 3y to Left hand side and change it's sign

Similarly, move -1 to right hand side and change it's sign

⇒\sf{ - 2y - 3y = 2}

Collect like term

⇒\sf{ - 5y = 2}

Divide both sides of the equation by -5

⇒\sf{ \frac{ - 5y}{ -5 }  =  \frac{2}{ - 5} }

Calculate

⇒\sf{ - 0.4}

Hope I helped!

Best regards!

Vadim26 [7]3 years ago
4 0

Answer: y= -2.5

Step-by-step explanation:

Distribute the -2 and 3 into the parentheses. -6 + 6 cancels out so you are left with 3y on the right side. Add 2y to the right side leaving you with -2=5y. Divide both sides by -2

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If I multiply a number L by another number M, I get 452,199. If I multiply L by the successor of M, I get 454,322. Find L x L.
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Find the value of x. Round to<br> the nearest tenth.
denpristay [2]

Answer:

\displaystyle x \approx 38.2 ^{\circ}

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

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<u>Pre-Calculus</u>

Law of Sines: \displaystyle \frac{sin(A)}{a} =\frac{sin(B)}{b} =\frac{sin(C)}{c}

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Step-by-step explanation:

<u>Step 1: Identify</u>

A = 27°, a = 11

B = x°, b = 15

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

  1. Substitute [LOS]:                     \displaystyle \frac{sin(27^{\circ})}{11} =\frac{sin(x^{\circ})}{15}
  2. Cross-multiply:                        \displaystyle 11sin(x^{\circ}) = 15sin(27^{\circ})
  3. Isolate <em>x</em> term:                         \displaystyle sin(x^{\circ}) = \frac{15sin(27^{\circ})}{11}
  4. Isolate <em>x</em>:                                  \displaystyle x = sin^{-1}(\frac{15sin(27)}{11})
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  6. Round:                                    \displaystyle x \approx 38.2 ^{\circ}
7 0
3 years ago
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