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3 years ago

6 9 18 What number comes next in the above sequence?

Mathematics

2 answers:

tatuchka [14]3 years ago

8 0

Answer:24

Step-by-step explanation:

count by your 6's

lukranit [14]3 years ago

4 0

Answer:

Step-by-step explanation:

add half of the previous number to the next one

18/2 = 9

18+9 =27

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3 years ago

A parachutist's speed during a free fall reaches 180 kilometers per hour. What is this speed in meters per second? At this speed

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Speed of the parachutist is meters per second $2.083$ meter per second

Distance travelled in 2 seconds $4.167$ meter

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3 years ago

a group of astronauts launched a model rocket from a platform. Its flight path is modeled by h= -4t^2+24t+13 where h is the heig

Eddi Din [679]

Answer:

6.5 seconds

Step-by-step explanation:

Keep in mind that when $h=0$ , this is the same height for both when the model rocket takes off and lands, so when the rocket lands, time is positive. Thus:

$h=-4t^2+24t+13\\\\0=-4t^2+24t+13\\\\t=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\\ \\t=\frac{-24\pm\sqrt{24^2-4(-4)(13)}}{2(-4)}\\ \\t=\frac{-24\pm\sqrt{576+208}}{-8}\\\\t=\frac{-24\pm\sqrt{576+208}}{-8}\\\\t=\frac{-24\pm\sqrt{784}}{-8}\\\\t=\frac{-24\pm28}{-8}\\\\t=\frac{-24-28}{-8}\\ \\t=\frac{-52}{-8}\\ \\t=\frac{52}{8}\\\\t=6.5$

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3 years ago

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