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nataly862011 [7]
3 years ago
8

The length of one rectangle is 4 more than

Mathematics
1 answer:
inysia [295]3 years ago
6 0
L = 3w + 4

l = w + 28
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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)}

t=4.5

<u><em>The rocket will take 4.5 seconds to reach its maximum height.</em></u>

7 0
2 years ago
Y=3 - 2x<br> 3x + 4y = 1
PolarNik [594]

Answer:

{y,x} = {17/2,-11}

Step-by-step explanation:

7 0
3 years ago
Jeff has 8 red marbles 6 blue marbles, and 4 green marbles that are the same size and shape he puts the marbles into a bag, mixe
Cloud [144]

Hey buddy I am here to help!

Red = 8

blue = 6

greem = 4

total = 18

probability of blue marble = 6/18 = 1/3

4 0
3 years ago
Read 2 more answers
X^3 = 1,000<br> algebratic equations
katovenus [111]

Answer:

10

Step-by-step explanation:

x³=1000

x=3√1000

x=10

5 0
3 years ago
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classify the polygon by its number of sides. state whether the polygon appears to be regular or not regular
UkoKoshka [18]

Answer: the correct answer is the third option




8 0
3 years ago
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