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Lostsunrise [7]
3 years ago
14

Which of the following numbers is rational?

Mathematics
2 answers:
scoundrel [369]3 years ago
6 0

Answer:

18 , 78  , and π

Step-by-step explanation:

dezoksy [38]3 years ago
5 0
For the last one is the pi sign and 2.333
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Question 3 Unsaved
bazaltina [42]

Answer:

Step-by-step explanation:

DE given is

y''+8y'+15y=0, y(0)=0, y'(0)=1

Take Laplace on the DE

We get

s^2 Y(s) -sY(0) -y'(0)+8(sY(s)-y(0))+15Y(s) =0\\s^2 Y(s) -s(0) -1+8(sY(s)-0)+15Y(s) =0\\Y(s)(s^2+8s+15)-1=0\\Y(s) = \frac{1}{s^2+8s+15}

Simplify to get

Y(s) = \frac{1}{2}[ {\frac{1}{s+3} -\frac{1}{s+5} }]

Take inverse

y(t) = \frac{e^{-3t} -e^{-5t}}{2}

8 0
3 years ago
HELP PLS Describe two real-life situations that could be represented by the graph below
aev [14]

the amount you walk by the hour?

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4 0
3 years ago
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Hey !! Can someone please help me with this??
Katyanochek1 [597]

Answer:

8^2 and 4 x 4 x 4

Step-by-step explanation:

4 to the third power, is the same as 4 x 4 x 4.

This is then equal to 64.

8 squared is also equal to 64, making it also an answer.

None of the other ones work.

<em>Hope this helps and have a nice day!! :) :] :D</em>

7 0
3 years ago
Match the lengths for the second legs of the right triangles below.
katovenus [111]
For the first one it’s 40 feet
The second one is 32
The last is 40

3 0
3 years ago
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NEED HELP QUICK NO LINKS PLEASE!
Juli2301 [7.4K]

Answer:

3. 4x^2y

Step-by-step explanation:

The GCF of 36 and 14 is 4.

The GCF of x^2y and x^2y^2 is x^2y

Multiply the two GCF and you get 4x^2y

6 0
3 years ago
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