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3 years ago

Solve. 3^x+1 = 9^5x.

Mathematics

2 answers:

yarga [219]3 years ago

5 0

Answer:

d on edge :)

Step-by-step explanation:

Reptile [31]3 years ago

4 0

Answer:

X= 1/9 decimal form x=0.1

Step-by-step explanation:

3^x+1=3²(5x)

x+1 =2(5x)

solve for x

x=1/9

Exact form: x= 1/9

Decimal form x=0.1

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Let X1, . . . ,Xn be an i.i.d. random sample from a N(0, 1) population. Define Y1 = 1 n n X i=1 Xi , Y2 = 1 n n X i=1 |Xi| . Cal

nalin [4]

For each $1\le i\le n$ , $E[X_i]=0$ , so that

$\displaystyle E[Y_1]=E\left[\frac1n\sum_{i=1}^nX_i\right]=\frac1n\sum_{i=1}^nE[X_i]=0$

Meanwhile,

$\displaystyle E[Y_2]=\frac1n\sum_{i=1}^nE[|X_i|]$

Each of the $X_i$ have PDF

$f_{X_i}(x)=\dfrac1{\sqrt{2\pi}}e^{-x^2/2}$

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3 years ago

345 millimeters into meters

lutik1710 [3]

<span>345 Millimeters = 0.345 Meters
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3 years ago

Read 2 more answers

Find the 39th term of the arithmetic sequence

myrzilka [38]

Answer:

-142

Step-by-step explanation:

You seem to have an arithmetic sequence with first term -66 and common difference (-68-(-66)) = -2. The general term of such a sequence is given by ...

an = a1 +d(n -1) . . . . . for first term a1 and common difference d

We want to evaluate this equation for a1 = -66, d = -2, n = 39:

a39 = -66 -2(39 -1) = -66 -76 = -142

The 39th term is -142.

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3 years ago

The sum of 2 numbers is 25. Their difference is 7. Find the numbers. Let x=1st number and y=2nd number

Alex Ar [27]

Answer:

x= 16 and y = 9

Step-by-step explanation:

1 st equation ; x+y = 25

2 nd equation ; x- y = 7

from 1 st equation

x = 25 - y

now putting value of x in 2 nd equation

x- y = 7

25 - y-y = 7

25 -2y =7

25-7 = 2y

18 = 2y

18/2 = y

y = 9

again

putting value of y in 1 st equation

x = 25-y

x = 25-9

x= 16

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3 years ago

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4 years ago