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3 years ago

Math/Physics Problem (I'd be glad if you solved one of them).

Mathematics

1 answer:

Whitepunk [10]3 years ago

4 0

Answer:

19.2

76.8

Step-by-step explanation:

density × volume = mass

mass = 62.4 × (pi × (40/2)² × h)

mass = 78,374.4h

WD = m×9.8×h = 9.8mh

WD = 768,069.12h²

At h = 5

WD = 768,069.12×5²

= 19,201,728 ft-lb

= 19.2 million ft-lb

At h = 10

WD = 76,806,9.12 × 10²

WD = 76,806,912 ft-lb

= 76.8 million ft-lb

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3 years ago

Use the arithmetic progression formula to find the sum of integers from 75 to 100.75,76,77....99,100.

Sophie [7]

Answer:

The sum is 2275

Step-by-step explanation:

Given

$75,76,77....99,100$

Required

The sum

Using arithmetic progression, we have:

$S_n = \frac{n}{2}(T_1 + T_n)$

Where:

$T_1 = 75$ --- first term

$T_n = 100$ --- last term

$n = T_n - T_1 + 1$

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So, we have:

$S_n = \frac{n}{2}(T_1 + T_n)$

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$S_n = 13*175$

$S_n = 2275$

5 0

3 years ago

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svet-max [94.6K]

Answer: D

i would go with D i am not 100% sure math is not my strongest point

Hope this helps!

Step-by-step explanation:

-MalStar

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3 years ago

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Step-by-step explanation:

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Step-by-step explanation:

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