3 years ago

(4√3 − 2√5)(3√10 + 5√6) simplify the expression show all work

Mathematics

1 answer:

UNO [17]3 years ago

7 0

Answer:

60\sqrt{2}-10\sqrt{30}

Step-by-step explanation:

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Two train leave stations 210 miles apart at the same time and travel toward each other. One train travels at 80 miles per hour w

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SOLUTION

At the same time t,

Train 1 would have covered a distance of 80t, since distance = average speed x time.

Train 2 would have covered a distance of 70t.

Now both added should give 210 miles

That is 80t + 70t = 210

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t = 210/150

t = 1.4 hours

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1 year ago

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Answer:

Step-by-step explanation:

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3 years ago

. A hawk flying at a height of 60 feet spots a rabbit on the ground. If the hawk dives at a speed of 55 feet per second, how

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Answer:

The hawk reaches the rabbit at t=4.3 sec

Step-by-step explanation:

Let

h ----> is the height in feet

t ----> is the time in seconds

v ---> the initial velocity in feet pr second

s ----- is the starting height

we have

$h=-16t^{2} +vt+s$

when the hawk reaches the rabbit the value of h is equal to zero

we have

$v=55\ ft/sec$

$s=60\ ft$

substitute

$0=-16t^{2} +55t+60$

Solve the quadratic equation by graphing

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see the attached figure

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What is the area of this figure (4,1)(2,2)(2,-2)(-4,-2)(-2,-5)(2,-5)

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Answer:

The area of this figure is 45 square units.

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