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3 years ago

Which faces have an area of 28 in.2? Select all that

Mathematics

1 answer:

-BARSIC- [3]3 years ago

7 0

Answer: 2, 6.

Step-by-step explanation:

On edge! If right please mark brainliest!

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If a spring is oscillating (moving) according to the velocity equation v(t) = 2sin(t) (in ft/s), then what is its displacement o

Feliz [49]

ANSWER

4 ft

EXPLANATION

The velocity equation of the oscillating spring is given by the function.

$v(t)=2 \sin(t) \: \: {ms}^{ - 1}$

To find the displacement function, we need to to Integrate the velocity function.

$s(t) = \int \: 2 \sin(t) dt$

$s(t) = - 2 \cos(t) + k$

At time t=0, there was no displacement.

This implies that,

$s(0) = 0$

$0= - 2 \cos(0) + k$

$0= - 2 + k$

$k = 2$

The displacement function then becomes,

$s(t) = - 2 \cos(t) + 2$

To find the displacement over the first π seconds, we put

$t = \pi$

into the equation for the displacement to get,

$s(\pi) = - 2 \cos(\pi) + 2$

$s(\pi) = - 2 ( - 1) + 2$

$s(\pi) = 2 + 2 =4 ft$

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3 years ago

In a group of 120 farmers, 65 grow maize and 75 grow cassava. Of these 35 grow both maize and cassava.

Simora [160]

30 farmers grow it I think.

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3 years ago

Whoever does gets brainest NO JOKE

Kruka [31]

Answer:

x=2475/31 Exact form

x=70.838 Decimal form

x=7026/31 Mixed Number form

i didnt know which one you wanted

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3 years ago

Plsss help me:(! Write a real world problem for each inequality 5x – 50 100

lisabon 2012 [21]

Answer:

Ed had 5 books and each book had 100 pages and it takes him 50 mins to read each book how many books can he read in a day?

sorry if it's not good I try.

Step-by-step explanation:

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2 years ago

What is the value of the expression below when w = 8? w^2 - 4w - 2

alexdok [17]

Answer:

Step-by-step explanation:

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3 years ago