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3 years ago

If x = ‐3, evaluate x + 7

Mathematics

1 answer:

ziro4ka [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Substitute -3 for x.

-3 + 7 = 4

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Which expressions are equivalent to the one below? Check all that apply.

Ilia_Sergeevich [38]

Answer:

Options C and D are correct answers.

C. 3

D. 3.In e

Step-by-step explanation:

$In(e^3)$ (Given)

$=3.In \:e$

$=3.(1)\:\:\:\:(\because In \:e = 1)$

$=3$

5 0

2 years ago

24g+40f this confusing

valina [46]

Answer:

Step-by-step explanation: because 24g reverts 40f so we have to subtract them

and get the answer

5 0

3 years ago

The Laplace Transform of a function f(t), which is defined for all t > 0, is denoted by L{f(t)} and is defined by the imprope

lesya692 [45]

(1) D

$L_s\left\{t\right\} = \displaystyle\int_0^\infty te^{-st}\,\mathrm dt$

Integrate by parts, taking

$u = t \implies \mathrm du=\mathrm dt$

$\mathrm dv = e^{-st}\,\mathrm dt \implies v=-\dfrac1se^{-st}$

Then

$L_s\left\{t\right\} = \displaystyle \left[-\frac1ste^{-st}\right]\bigg|_{t=0}^{t\to\infty}+\frac1s\int_0^\infty e^{-st}\,\mathrm dt$

$L_s\left\{t\right\} = \displaystyle \frac1s\int_0^\infty e^{-st}\,\mathrm dt$

$L_s\left\{t\right\} = \displaystyle -\frac1{s^2}e^{-st}\bigg|_{t=0}^{t\to\infty}$

$L_s\left\{t\right\} = \displaystyle \boxed{\frac1{s^2}}$

(2) A

$L_s\left\{1\right\} = \displaystyle\int_0^\infty e^{-st}\,\mathrm dt$

$L_s\left\{1\right\} = \displaystyle\left[-\frac1se^{-st}\right]\bigg|_{t=0}^{t\to\infty}$

$L_s\left\{1\right\} = \displaystyle\boxed{\frac1s}$

7 0

3 years ago

Ch00se Da C0rect one plz

Maksim231197 [3]

Answer:

The first one

Step-by-step explanation:

Because it is

3 0

3 years ago

Total solar eclipses occur on a regular and predictable basis. One that could be viewed in parts of the United States occurred o

Ivenika [448]

Answer:

Step-by-step explanation:

The previous solar eclipse occured on March 7 , 1970 .

saros cycle has duration of 18 years , 11 + 1/3 days

So the earth goes 1 / 3 of its daily rotation beyond its previous location in the next solar eclipse on the earth . In order that we get solar eclipse on the same point on the earth , we shall have to wait for third solar eclipse

So total period of wait = 18 x 3 years + 11 x 3 + 1 = 54 years and 34 days

Date of next solar eclipse on the same spot = 1970 + 54 = 2024

7 th March + 34 days = April 10

likely date = April 10 , 2024 .

8 0

3 years ago