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3 years ago

Evaluate the formula V= Bh/3 for B = 15 in.2 and h = 28 in.

Mathematics

2 answers:

Gelneren [198K]3 years ago

7 0

V=140in.^3 would be the answer

ad-work [718]3 years ago

6 0

V = Bh/3
V = 15 x 28 / 3
V = 420 / 3
V = 140 in^3

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3 years ago

At 3:30 p.m., Berto’s train was 34 miles past the egg farm, traveling at an average speed of 85 miles per hour. At the same time

timurjin [86]

E=egg farm

x=distantce between the Berto´s trains and the meeting point.

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⇒110 miles/h ⇒85miles/h

[---------------------------E----------------------]-------------------------------------X

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S=seed

d=distance

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Berto´s train;

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3 years ago

Read 2 more answers

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qaws [65]

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$y=30\,\mathrm m+\left(250\dfrac{\rm m}{\rm s}\right)\sin45^\circ\,t-\dfrac g2t^2$

where $g=9.8\dfrac{\rm m}{\mathrm s^2}$ . Solve $y=0$ for the time $t$ it takes for the projectile to reach the ground:

$30+\dfrac{250}{\sqrt2}t-4.9t^2=0\implies t\approx36.2458\,\mathrm s$

In this time, the projectile will have traveled horizontally a distance of

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The projectile's horizontal and vertical velocities are given by

$v_x=\left(250\dfrac{\rm m}{\rm s}\right)\cos45^\circ$

$v_y=\left(250\dfrac{\rm m}{\rm s}\right)\sin45^\circ-gt$

At the time the projectile hits the ground, its velocity vector has horizontal component approx. 176.77 m/s and vertical component approx. -178.43 m/s, which corresponds to a speed of about $\sqrt{176.77^2+(-178.43)^2}\dfrac{\rm m}{\rm s}\approx250\dfrac{\rm m}{\rm s}$ .

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3 years ago