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ArbitrLikvidat [17]

4 years ago

9

A random sample of size 36 is taken from a population with mean µ = 17 and standard deviation σ = 6. what are the expected value

and the standard deviation for the sampling distribution of the sample mean?

1 answer:

vlada-n [284]4 years ago

7 0

Dont know the answer but you need to take 36 and times it by 17 anddivide by 6

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What are the potential solutions of log4x+log4(x+6)=2

mash [69]

we are given with the logarithmic equation

$log4x+log4(x+6)=2$

Using logarithmic Property

$Loga+Logb=Logab$

we can write

$Log[4x*4(x+6)]=2\\ \\ Log[16(x^2+6x)]=2\\ \\\\$

Take anti-logarithm we get

$16(x^2+6x)=10^2\\ \\ 16x^2+96x=100\\ \\ 4x^2+24x=25\\ \\ 4x^2+24x-25=0\\ \\$

Now using Quadratic formula , we can find x as below:

$x=\frac{-24 \pm\sqrt{24^2-4*4*(-25)}}{2*(4)}\\ \\ x= \frac{1}{8}(-24\pm4\sqrt{61})$

As we know the logarithm is defined for the negative values.

Hence the possible solution is

$x= \frac{1}{8}(-24+4\sqrt{61})\\ \\ x=0.905\\$

3 0

3 years ago

Grayson lives 4/5 miles from the park he already walked 3/4 of the way to the park how far has Grayson walked

defon

Algebra

Grayson has already walked 0.6 miles

Step-by-step explanation:

Grayson lives $\frac{4}{5} \\$ miles from park

So the total distance is $\frac{4}{5} \\$ miles

He has already waked $\frac{3}{4\\}$ of the way to the park

If the total distance between Grayson's house and Park is $d_{total}$

and the distance he has already walked is $d_{walked}$

Then $d_{walked} = \frac{3}{4}$ × $d_{total}$

⇒ $d_{walked} = \frac{3}{4}\\$ × $\frac{4}{5} \\$

⇒ $d_{walked}\\$ = $\frac{3}{5}$ miles

⇒ $d_{walked}\\$ = 0.6 miles

Hence, Grayson has already walked 0.6 miles

7 0

3 years ago

Solve for x and y:<br> x = 5 – 2y<br> 4y = 15 - 2x

Vika [28.1K]

Answer:

No solution.

Step-by-step explanation:

So we have the system of equations:

$x=5-2y\\4y=15-2x$

We can solve this by substitution. Substitute the first equation into the second. Thus:

$4y=15-2(5-2y)$

Distribute the right:

$4y=15-10+4y$

Subtract 4y from both sides:

$0=15-10$

Subtract the right:

$0=5$

As you can see, this statement is not true. In other words, the system of equations have no solution (likely because the lines are parallel).

And we're done!

7 0

3 years ago

What are all the real zeros of y=(x-12)^3-10

Daniel [21]

Domain of (x-12)3-10
Range of (x-12)3-10
Parity of (x-12)3-10
Axis Interception point's of (x-12)3-10
x intercepts (40/3) Y Intercept (0,-46)
Inverse of (x -12)3-10: [x+46/3]

4 0

4 years ago

Read 2 more answers

7.04 billion in scientific notation

telo118 [61]

7.04 billion = 7.04 x 10^9

7 0

3 years ago