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serg [7]
3 years ago
15

Find the value of y showing your steps or explaining your thinking. (2 pts.)​

Mathematics
1 answer:
makvit [3.9K]3 years ago
4 0

Answer:

y = 54

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

<u>Geometry </u>

  • Congruency
  • All angles in a triangle add up to 180°

Step-by-step explanation:

<u> Step 1: Define</u>

3(x + 7)° = 63°

3(x + 7)° + 63° + y° = 180°

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

  1. Divide 3 on both sides:                    x + 7 = 21
  2. Subtract 7 on both sides:                 x = 14

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em>:                    3(14 + 7) + 63 + y = 180
  2. (Parenthesis) Add:              3(21) + 63 + y = 180
  3. Multiply:                               63 + 63 + y = 180
  4. Combine like terms:           y + 126 = 180
  5. Isolate <em>y</em>:                              y = 54
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3 years ago
8x+10+13x-7 <br> combine like terms
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Step-by-step explanation:, Ok so Let's simplify step-by-step.

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A rocket takes off from a height of 30 feet with an initial velocity of 150 ft /sec. The equation that models the path that the
algol13

Answer:

The rocket will hit the floor at 9.57 seconds

Step-by-step explanation:

Given

G(x) = -16x^2 + 150x + 30

Take off height = 30ft

Initial velocity= 150ft/s

Required [Missing from the question]

Time to hit the ground

The rocket will hit the ground at:

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So, we have:

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Rewrite as:

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So, we have:

x = \frac{-(-150) \± \sqrt{(-150)^2 - 4*16*(-30)}}{2*16}

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So:

x = \frac{306.27}{32}

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The answer i x=4/99  (fraction form )

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