Find the value of x. 133 6 135 137° 139°

Mathematics

2 answers:

dmitriy555 [2]3 years ago

7 0

Answer: x + 92° + 47° + 82° = 360° Add 92, 47, and 82 together

x + 221° = 360° Subtract 221 on both sides to get "x" by itself

x + 221° - 221° = 360° - 221°

x = 139° Your answer is the 4th option

saveliy_v [14]3 years ago

3 0

The sum of the angles of 4-sided shapes is 360°

To find the missing angle, you can do this:

x + 92° + 47° + 82° = 360° Add 92, 47, and 82 together

x + 221° = 360° Subtract 221 on both sides to get "x" by itself

x + 221° - 221° = 360° - 221°

x = 139° Your answer is the 4th option

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sammy [17]

This is 1/2)2=1/4 hope this helps

7 0

3 years ago

1. The height of a missile t seconds after it has been fired is given by h=4.9t^2+44.1t. How many seconds will it take for the r

asambeis [7]

Answer:

The rocket will take 4.5 seconds to reach its maximum height.

Step-by-step explanation:

The height of a missile t seconds after it has been fired is given by h=-4.9*t²+44.1*t

This function is a quadratic function of the form f (x) = a*x² + b*x + c. In this case a=-4.9, b=44.1 and c=0

To calculate how many seconds it will take for the rocket to reach its maximum height, I must calculate the maximum of the function. The maximum of a quadratic function is the vertex of the parabola. The x coordinate of the vertex will be simply: $x=\frac{-b}{2*a}$ . The y coordinate of the vertex corresponds to the function evaluated at that point.

In this case the x coordinate of the vertex corresponds to the t coordinate. In other words, by calculating the x coordinate of the vertex, you are calculating the maximum time t it will take for the rocket to reach its maximum height. So:

$t=\frac{44.1}{2*(-4.9)}$