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Svetradugi [14.3K]
2 years ago
10

Evaluate the expression for the given value of the variable 39 +1/8n=? n= - 1/2

Mathematics
2 answers:
kati45 [8]2 years ago
8 0
Exact form = 623/16
Decimal form = 38.9
Mixed number form= 38 15/16
I am Lyosha [343]2 years ago
5 0
The answer is I’m just doing this for points
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Solve for s<br> -24-6s=-42
erastovalidia [21]

Answer

S=3

Step-by-step explanation:

add 24 to both sides, then you subtract -42+24 take sign of the larges which is negative  and youll get -6s=-18 divide -6 to both sides and you will get S=3

7 0
3 years ago
Inverse laplace of [(1/s^2)-(48/s^5)]
Katen [24]
**Refresh page if you see [ tex ]**

I am not familiar with Laplace transforms, so my explanation probably won't help, but given that for two Laplace transform F(s) and G(s), then \mathcal{L}^{-1}\{aF(s)+bG(s)\} = a\mathcal{L}^{-1}\{F(s)\}+b\mathcal{L}^{-1}\{G(s)\}

Given that \dfrac{1}{s^2} = \dfrac{1!}{s^2} and -\dfrac{48}{s^5} = -2\cdot\dfrac{4!}{s^5}

So you have \mathcal{L}^{-1}\left\{\dfrac{1}{s^2} - 2\cdot\dfrac{4!}{s^5}\right\} = \mathcal{L}^{-1}\left\{\dfrac{1}{s^2}\right\} - 2\mathcal{L}^{-1}\left\{\dfrac{4!}{s^5}\right\}

From Table of Laplace Transform, you have \mathcal{L}\{t^n\} = \dfrac{n!}{s^{n+1}} and hence \mathcal{L}^{-1}\left\{\dfrac{n!}{s^{n+1}}\right\} = t^n

So you have \mathcal{L}^{-1}\left\{\dfrac{1}{s^2}\right\} - 2\mathcal{L}^{-1}\left\{\dfrac{4!}{s^5}\right\} = \boxed{t-2t^4}.

Hope this helps...
7 0
3 years ago
Please help with this acellus question!
Anna11 [10]

Answer:

The value of x is 5

Step-by-step explanation:

In the given triangle

∵ A segment joining two points lie on the two side

∵ This segment is parallel to the third side

∴ This segment divides the two sides into parts that have the same ratio

→ That means x over 2x - 3 equal to 10 over 14

∵ \frac{x}{2x-3} = \frac{10}{14}

→ By using cross multiplication

∴ 10 × (2x - 3) = x × 14

∴ 10(2x) - 10(3) = 14x

∴ 20x - 30 = 14x

→ Add 30 to both sides

∵ 20x - 30 + 30 = 14x + 30

∴ 20x = 14x + 30

→ Subtract 14x from both sides

∵ 20x - 14x = 14x - 14x + 30

∴ 6x = 30

→ Divide both sides by 6

∴ x = 5

∴ The value of x is 5

6 0
3 years ago
Sean paints 8/15 of a fence in 1 hour. He paints 3/10 of the fence less in the second hour. What fraction of the fence did he pa
a_sh-v [17]

Answer: \frac{3}{10}

Step-by-step explanation:

Given

Sean paints \frac{8}{15} of a fence in 1 hour

Sean paints \frac{3}{10} part less in the second hour

So, fraction he paints in the second hour = \frac{8}{15}-\frac{3}{10}=\frac{16-9}{30}=\frac{7}{30}

Paint in 2 hours = \frac{8}{15}+\frac{7}{30}=\frac{16-7}{30}=\frac{9}{30}

                          =\frac{3}{10}

No, he did not finish his job

7 0
3 years ago
F(x)=5x+6;g(x)=7x-2 qfjnd (f+g)(x)
Likurg_2 [28]

Answer:

12x+4

Step-by-step explanation:

Use the given functions to set up and simplify  ( f + g ) ( x )

7 0
3 years ago
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