3 years ago

) use the midpoint rule with m= 4 and n = 2 to estimate the value of

Mathematics

1 answer:

Aneli [31]3 years ago

5 0

What is the complete question?

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The height, h, in feet of a ball above the ground is given by h = −16t2 + 64t + 80, where t is the time in seconds. How long doe

Gwar [14]

Answer:

t = 5 seconds

Step-by-step explanation:

It is given that, the height h, in feet of a ball above the ground is given by :

$h=-16t^2+64t+80$

Where t is in seconds

We need to find how long does it take the ball to hit the ground? When it hits the ground, its height will be equal to 0. So,

$-16t^2+64t+80=0\\\\t=\dfrac{-64\pm \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=\dfrac{-64+ \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16},\dfrac{-64-\sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=-1\ s\ \text{and}\ t=5\ s$

Neglecting negative time.

It means ball will take 5 seconds to hit the ground.

3 0

3 years ago

Determine the sum of: −10y2+(−3y2)−4y2−(−6y2)<br><br> the 2 are squared

Bas_tet [7]

-10y^2 + (-3y^2) - 4y^2 - (-6y^2) =
-10y^2 - 3y^2 - 4y^2 + 6y^2 =
-17y^2 + 6y^2 =
- 11y^2

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3 years ago

I aould appreciate if someone helped

Anni [7]

4/5 = 0.80
1/5 + 3/5 = 3/5 + 1/5

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3 years ago

All ______ numbers, which include rational and irrational numbers, can be plotted on a number line.

777dan777 [17]

Answer:

The letter D is correct (real)

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Find the exact value of the area of a circle whose radius is 3.1

GuDViN [60]

Step-by-step explanation:

$area \: of \: circle = \pi \: {r}^{2} \\ = 3.14 \times {(3.1)}^{2} \\ = 3.14 \times 9.61 \\ = 30.1754 \: {unit}^{2} \\$

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3 years ago

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