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3 years ago

This Is My Last Question And I'm Giving 20 Points

Mathematics

1 answer:

vekshin13 years ago

3 0

Answer:

you are not giving 20 points you are giving ten

Step-by-step explanation:

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(3m - 2) (9m + 4z) (3y - 4z)

skelet666 [1.2K]

Answer in screenshot!

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3 years ago

if I buy 52 packs of cookies and 16 cookies are in each pack how many cookies do I have all together .

katen-ka-za [31]

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68 cookies

Step-by-step explanation:

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3 years ago

X(21)+x(4)=300 I need solving

Genrish500 [490]

Answer:

Step-by-step explanation:

21x + 4x = 300 Put brackets around the first two terms.

(21x + 4x) = 300 Pull the x outside the brackets. Use the distributive property. Combine the left

25x = 300 Divide by 25

25x/25=300/25 Do the division

x = 12

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4 years ago

Look at picture, answer quick please

Tpy6a [65]

Step-by-step explanation:

1. C = the graphing is slowly increasing, then he walks across the top so it is flat

2. D = it started out slow and gradually got higher, which is what the story said

3. H = he had to stop walking, and there is a part of no movement in the graph H

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3 years ago

Use the position function s(t) = –4.9t2 + 500, which gives the height (in meters) of an object that has fallen for t seconds fro

weqwewe [10]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The value is $v(3) = 29.4 \ m/s$

Step-by-step explanation:

From the question we are told that

$s(t) = -4.9t^2 + 500$

And

$\lim_{t \to a} \frac{s(a) - s(t)}{a-t}$

Generally s(t) at t = a is mathematically evaluated as

$s(a) = -4.9a^2+ 500$

$s(a) - s(t) = -4.9a^2 + 500 - ( -4.9t^2+500)$

$s(a) - s(t) = -4.9a^2 + 500 +4.9t^2-500)$

$s(a) - s(t) = 4.9(t^2 - a^2)$

Thus the velocity is represented as

$v(t) =\lim_{t \to a} \frac{s(a) - s(t)}{a-t} \equiv \lim_{t \to a} \frac{4.9(t^2 - a^2 )}{ a-t}$

=> $v(t) = \lim_{t \to a} - 4.9(a + t )$

=> $v(t) = -4.9 (a + a )$

=> $v(t) = -9.8a$

Now at t = 3

=> $v(3) = -9.8 (3)$

=> $v(3) = 29.4 \ m/s$

3 0

4 years ago