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ddd [48]
2 years ago
11

What would the perfect square be???

Mathematics
2 answers:
podryga [215]2 years ago
4 0

Answer:

D

Step-by-step explanation:

Setler [38]2 years ago
3 0

Answer:

d

Step-by-step explanation:

i literally just did that

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How do you write two hundred fifty-two and thirty-one ten thousandths
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252.3110

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Brian multiplied his average speed of 14.73 miles per hour by the amount of time he spent cross-country skiing. His product was
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12.2*1=12.2

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The police are concerned about speeding on Wayman Boulevard,
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C) 20 Speeders

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5 0
3 years ago
A van starts off 191 miles directly north from the city of Morristown. It travels due east at a speed of 25 miles per hour. Afte
coldgirl [10]

Answer:

Distance between the van and Morristown is changing at the rate of 13.22 miles per hour.

Step-by-step explanation:

From the figure attached,

Van starts from C (City of Morristown), reaches the point A 191 miles due North and then it travels with a speed of 25 miles per hour due East from A towards B.

We have to calculate the rate of change of distance BC, when the van reaches point B which is 119 miles away from A.

By Pythagoras theorem in the triangle ABC,

BC^{2}=AB^{2}+AC^{2}

Distance AC is constant equal to 191 mi.

By differentiating the equation with respect to time 't'

2BC.\frac{d(BC)}{dt}=0+2AB.\frac{d(AB)}{dt}

BC.\frac{d(BC)}{dt}=AB.\frac{d(AB)}{dt}

Since BC² = (119)²+ (191)²

BC = √50642 = 225.04 miles

From the differential equation,

(225.03).\frac{d(BC)}{dt}=119\times 25 [Since \frac{d(AB)}{dt}=25 miles per hour]

\frac{d(BC)}{dt}=13.22 miles per hour

Therefore, distance between the van and Morristown is changing at the rate of 13.22 miles per hour.

4 0
3 years ago
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