Which of the equations matches the line shown in the diagram?

If N=b/d(squared) write down in terms of b and d

Paladinen [302]

B. The square root of N

8 0

3 years ago

Thinking about the areas of a Standard Normal Distribution, as z values decrease, do the areas to the left of z increase, or dec

Vera_Pavlovna [14]

The figure below shows the standard normal distribution or "bell-shaped" curve, plotted against the z-score.
The z-score is defined as
z = (x - μ)/σ
where
x = nrandom variable
μ = mean
σ = standard deviation.

As z-values decrease, areas to the left of z decrease as shown by the shaded area.

Answer:
Areas to the left of z decrease.

8 0

3 years ago

Geometric mean of 5 and 8 in simplest radical form

Montano1993 [528]

First, multiply 5 and 8. That equals 40. Then you take the square root of 40, which doesn't result in a whole number, so you factor 40 and removing perfect squares. In which case the answer would be 2√10

6 0

3 years ago

The probability of rain on any given day is 2/3 . What is the probability of at most one day of rain during the next three days?

MArishka [77]

Answer:

$\frac{7}{27}$

Step-by-step explanation:

Let the event of raining on a day be success.

Then probability of success, $p=\frac{2}{3}$

So, probability of failure is not raining on a day and is given as,

$q=1-p=1-\frac{2}{3}=\frac{3-2}{3}=\frac{1}{3}$

Now, number of days to check the probability of rain, $n=3$

Now, probability of raining at most one day means number of success is either 0 or 1.

Using Bernoulli's distribution for $X=0,1$

$P(X=0\textrm{ or }X=1)=_{0}^{3}\textrm{C}p^{0}q^{3-0}+_{1}^{3}\textrm{C}p^{1}q^{3-1}\\\\P(X=0\textrm{ or }X=1)=(\frac{1}{3})^{3}+3(\frac{2}{3})^{1}(\frac{1}{3})^{2}\\\\P(X=0\textrm{ or }X=1)=\frac{1}{27}+\frac{2}{9}\\\\P(X=0\textrm{ or }X=1)=\frac{1}{27}+\frac{6}{27}\\\\P(X=0\textrm{ or }X=1)=\frac{1+6}{27}=\frac{7}{27}$

Therefore, the probability of at most one day of rain during the next three days is $\frac{7}{27}$

6 0

3 years ago

What is the value of x to the nearest tenth?

ipn [44]

Answer:

x=9.6

Step-by-step explanation:

The dot in the middle represents the center of the circle, so therefore, the line that is represented by 16 is the radius. Since that is the radius, the side that is the hypotenuse of the small triangle is also 16, since they have the same distance.

The line represented by 25.6 with x as its bisector shows that when we divide it by 2, the other side of the triangle besides the hypotenuse is 12.8.

Now that we have the two sides of the triangle, we can find the last side (represented by x). Use pythagorean theorem:

$a^2 +b^2=c^2\\x^2+(12.8)^2=16^2\\x^2+163.84=256\\x^2=92.16\\x=9.6$

6 0

3 years ago