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Natali [406]
3 years ago
7

Solve the system of equations.

Mathematics
1 answer:
sasho [114]3 years ago
8 0

Step-by-step explanation:

y = x² - 3x + 6

y = 2x + 6

y = y

x² - 3x + 6 = 2x + 6

x² - 5x = 0

x(x - 5) = 0

x = 0 and x = 5

y = 2x + 6 and y = 2x + 6

y = 2(0) + 6 and y = 2(5) + 6

y = 0 + 6 and y = 10 + 6

y = 6 and y = 16

(x1,y1) and (x2, y2) = (0,6) and (5,16)

Option → A

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A punter on Westview High School's football team kicks a ball straight up from 5 feet above the ground with an initial upward ve
Naily [24]
This can solved graphically, using algebraic manipulation or differential calculus.

Plotting the equation will generate a parabola. The vertex represents the point where the ball will reach the maximum height.

The vertex can be determined by completing the square
h = -16t2 + 45t + 5
h - 5 = -16(t2 - 45/16t)
h - 5 - 2025/64 = -16(t2 - 45/16t + 2025/1024)
(-1/16)(h - 2345/64) = (t - 45/32)^2

The vertex is
(45/32,2345/64) or (1.41,36.64)

The maximum height is 36.64 ft

Using calculus, taking the first derivative of the equation and equating to 0
dh/dt = 0 = -32t + 45
t = 45/32
Substituting this value to the equation
h = -16(45/32)^2 + 45(45/32) + 5
h = 36.64 ft
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5 0
3 years ago
What is the value of the expression |x| + |y + z| when x = –6, y = –3, and z = –5?
mart [117]
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14
8 0
3 years ago
Iver a 24-hour period, the tide in a harbor can be modeled by one period of a sinusoidal function. The tide measures 4.35 ft at
enot [183]

Answer:

f(x)=3.95sin(\frac{\pi}{12}x)+4.35

Step-by-step explanation:

<u>Recall:</u>

  • Sinusoidal Function -> f(x)=a*sin(bx+c)+d
  • Amplitude -> a
  • Period -> \frac{2\pi}{|b|}
  • Phase Shift -> -\frac{c}{b}
  • Vertical Shift/Midline -> d

<u>Given:</u>

  • Amplitude -> a=8.3-4.35=3.95
  • Period -> \frac{2\pi}{|b|}=\frac{2\pi}{|24|}=\frac{2\pi}{24}=\frac{\pi}{12}
  • Phase Shift -> -\frac{c}{b}=-\frac{0}{24}=0
  • Vertical Shift/Midline -> d=\frac{8.3+0.4}{2}=\frac{8.7}{2}=4.35

<u>Conclusion:</u>

The equation that models the situation is f(x)=3.95sin(\frac{\pi}{12}x)+4.35

Hope this helped! I've attached a graph of the function so you can understand it better!

7 0
3 years ago
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