3 years ago

Identify the property illustrated: 7+ (-7) = 0

Mathematics

1 answer:

iVinArrow [24]3 years ago

8 0

Answer:

Additive inverse property

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(x+2) (x-2)=? (n+m) (n-m)=?<br><br> (r+9) ( r-9)=?

asambeis [7]

Answer:

(x+2) (x-2)= $x^{2}$ -4

(n+m) (n-m)= $n^{2} -m^{2}$

(r+9) ( r-9)= $r^{2}$ -81

Step-by-step explanation:

8 0

3 years ago

What is the answer to -14 + (-8/9)

nataly862011 [7]

Answer:

14.888

Step-by-step explanation:

Trust me :)

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3 years ago

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Seven students cut 5 3/4 inches of thread from a spool for a school project. What number represents the change in the amount of

Andrej [43]

I think the answer is b???

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4 years ago

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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

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

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3 years ago

Translate the following phrase to an algebraic expression:m more than t

soldier1979 [14.2K]

we can write "m more than t" like this:

$m+t$

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2 years ago