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NikAS [45]
3 years ago
8

The function h(t)=-16t^2+75t+80 models the height in feet, h, of a ball as it is thrown into the

Mathematics
1 answer:
sukhopar [10]3 years ago
6 0

Answer:

t = 4\\

or

t=0.6875

Step-by-step explanation:

124 = -16t^2+75t+80\\-16t^2+75t-44=0

Solving for t using the quadratic formula we get:

t = 4\\

or

t=0.6875

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Factor -2 out of -4 x^2 + 4 x - 10:

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PQR is a right angled triangle calculate the size of angle marked x
romanna [79]

Answer:

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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> </u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
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<u>Trigonometry</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

Angle θ = <em>x</em>

Adjacent Leg = 5.8

Hypotenuse = 7.3

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

  1. Substitute in variables [Cosine]:                                                                    \displaystyle cosx^\circ = \frac{5.8}{7.3}
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  3. [Equality Property] Trig inverse:                                                                    \displaystyle x^\circ = cos^{-1}(0.794521)
  4. Evaluate trig inverse:                                                                                      \displaystyle x = 37.39^\circ
  5. Round:                                                                                                             \displaystyle x \approx 37.4^\circ
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In a survey, 99 out of 100 people are not left-handed. what proportion of people are left-handed according to this survey?​
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1 out of 100

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