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3 years ago

Please help ASAP please

Mathematics

2 answers:

vladimir2022 [97]3 years ago

8 0

Answer:

d.1

Step-by-step explanation: because it is

raketka [301]3 years ago

3 0

I think it’s 1 so pick d

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A body moves s metres in a time t seconds so that s = t3 – 3t2 + 8. Find:

aleksandr82 [10.1K]

Answer is<em> </em><em><u>3t²-6t</u></em>

<h3>Step-by-step Explanation:-</h3>

$s(t) = {t}^{3} - 3 {t}^{2} + 8$

Now we need to find velocity. The velocity is the first derivative of position, so let's find the derivative of s(t) :-

$s'(t) = v(t) = 3 {t}^{3 - 1} - 3 \times 2 {t}^{2 - 1}$

So,

$v(t) = 3 {t}^{2} - 6t$

Therefore, <u>v(t) = 3t²-6t</u>

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2 years ago

40 POINTS AVAILABLE!!!<br> PLEASE HELP

NemiM [27]

Step-by-step explanation:

$\begin{array}{ccc}1&-&d\\2&-&c\\3&-&a\\4&-&b\\5&-&f\\6&-&e\end{array}$

Value 1:

r = 5ft, h = 10ft. Substitute:

$SA=2\pi(5)(10)+2\pi(5^2)=100\pi+50\pi=150\pi\ ft^2$

Value 2:

r = 2in, h = 4in. Substitute:

$V=\dfrac{1}{3}\pi(2^2)(4)=\dfrac{1}{3}\pi(4)(4)=\dfrac{16\pi}{3}\\\\\pi\approzx3.14\to V\approx\dfrac{(16)(3.14)}{3}\approx16.75\ in^3$

Value 3:

r = 6m. Substitute:

$V=\dfrac{4}{3}\pi(6^3)=\dfrac{4}{3}\pi(216)=4\pi(72)=288\pi\ m^3\\\\\pi\approx3.14\to V\approx288(3.14)=904.32\ m^3$

3 0

3 years ago

Read 2 more answers

3 is subtracted from the square of a number.

frozen [14]

Answer:

$x^{2}$ -3

Step-by-step explanation:

Three subtracted by a square of a number. So, let's say the number is x. The square of it is $x^{2}$ . So $x^{2}$ -3 is three subtracted by a square of a number.

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3 years ago

What is the standard form of the following equation:

Damm [24]

Answer:

My answer is D) y = 2(x - 2.5)^2 + 6

I hope it helps

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3 years ago

Pls help with 21 and 20.....

jeka94

Idk about 21
it's impossible for 2=-1

5 0

4 years ago