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Sergio039 [100]
3 years ago
15

(1/3)^x -81=-54 what does x=

Mathematics
1 answer:
balandron [24]3 years ago
3 0

Answer:

−81(3x)+1

3x

=54

Step-by-step explanation:

1

3x

−81=54

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Find the value of the determinant.<br> 4 8 10<br> 4 0-1<br> 3 - 2 4
VLD [36.1K]

Answer:

- 240

Step-by-step explanation:

We have to find the value of the following determinant  

\left|\begin{array}{ccc}4&8&10\\4&0&-1\\3&-2&4\end{array}\right|

Now, we know that the value of a general determinant \left|\begin{array}{ccc}a&b&c\\d&e&f\\g&h&i\end{array}\right| is given by [a( ei - fh) + b(fg - di) + c(dh - eg)]

Therefore, the value of the given determinant is

= 4[0 × 4 - (-1)(-2)] + 8[3(-1) - 4 × 4] + 10[4(-2) - 3 × 0]

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3 years ago
Kesha has scored 85 92 84 71 and 94 on her previous five Tess what score did she just she need to receive an excess of the avera
morpeh [17]

85+92+84+71+94+x /6>86

Multiply both sides by 6

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8 0
3 years ago
7x + 2y = 7<br> -14x + 2y = -11<br> Solve by substitution
kvasek [131]

Answer:

x = 6/7, y = 1/2

Step-by-step explanation:

7x + 2y = 7

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1) 7x + 2y = 7

2y = 7 - 7x

2) -14x + 2y = -11

-14x + 7 - 7x = -11

- 21x = -11-7

- 21x = - 18

x = 18/21 = 6/7

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3 years ago
Julia is five years older than her sister Babs, and their ages add up to 31. How old is Babs?
Tresset [83]
<span>Julia is X+5

</span><span>x+x+5=31
</span>
Now we just solve the equation 

2x=31-5
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x=13 years old (Babs' age)

and we know that julia is 5 years older this gives us the conclusion that. 

13+18=31
4 0
3 years ago
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If I have 60 coins consisting of dimes and quarters, and if I have x dimes, how many quarters do i have?
Contact [7]
I don't know if I'm correct, I'm guessing... 30
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3 years ago
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