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3 years ago

I need help ASAP please

Mathematics

1 answer:

Lorico [155]3 years ago

6 0

Volume of a right hexagonal pyramidd is $\frac{ \sqrt{3} }{2}a^{2}h$ where a is the base side legnth and h=height
side legnth=12
height=36
subsitute
V= $\frac{ \sqrt{3} }{2}(12^{2}) (36)$
V= $\frac{ \sqrt{3} }{2} (144)(36)$
V= $\frac{ \sqrt{3} }{2} (5184)$
V= $\frac{ 5184 \sqrt{3} }{2}$
V= $2592 \sqrt{3}$
V=4489.48 cm^3

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Isabella and Tanner are running in a 100-mile relay race. First, Isabella runs for 2 hours and hands off to Tanner, who bicycles

Murljashka [212]

Answer:

5 miles per hour and 15 miles per hour.

Step-by-step explanation:

Given:

Isabella and Tanner are running in a 100-mile relay race.

First, Isabella runs for 2 hours and hands off to Tanner, who bicycles for 6 hours to the finish line.

Tanner's average cycling speed is 5 miles an hour less than 4 times Isabella's average running speed.

Question asked:

what are their speed ?

Solution:

Let average running speed of Isabella = $x$

Tanner's average cycling speed is 5 miles an hour less than 4 times Isabella's average running speed means,

Tanner's average cycling speed = $4x-5$

Now, $Distance = speed\times time$

As we know that the total distance is 100 mile which is covered by both together,

Distance traveled by Isabella + Distance traveled by Tanner = 100

$x\times2 + (4x-5)\times6 = 100\\2x +24x-30=100\\26x-30 =100$

Adding both sides by 30

$26x =1 30\\$

Dividing both sides by 26

$x=5$

Isabella's average running speed $x=5 \ miles \ per \ hour$

Tanner's average cycling speed = $4x-5$ = $4\times5-5 =20 -5 = 15 \ miles\ per \ hour$

Therefore, Isabella's average running speed is 5 miles/hour and Tanner's average cycling speed is 15 miles/hour.

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4 years ago

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A if it is (4y-7z) - (5y+9z).

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Answer:

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p = (1/2y)/3

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a woman jogging at 6mi/hr passes a man biking in the opposite direction at 12mi/hr. If they maintain their speeds, how far from

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