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nataly862011 [7]

2 years ago

12

What does p( a or b) =.15 a customer buys a mouse and a customer buys a bird

1 answer:

Marina CMI [18]2 years ago

3 0

Answer:

Step-by-step explanation:

105

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Below are 36 sorted ages of an acting award winner. Find Upper P70 using the method presented in the textbook.

Leona [35]

The upper 70th percentile is the number below which 70% of the data lie.

The 70th percentile position is given by:

$P_{70}= \frac{70N}{100} = \frac{70(36)}{100} =25.2$

Thus, the 70th percentile position is approximately the 25th data item (after the data has been arranged in acsending order).

Given the following data:
<span>16 24 25 26 27 29 36 39 39 39 40 44 45 47 47 48 50 51 51 53 53 54 57 58
58 60 65 66 67 69 69 71 72 74 74 74

The 25th data in the data set is 58.

Therefore, the upper P70 is 58.
</span>

6 0

2 years ago

Read 2 more answers

Which of the following is the solution to the equation below?

nasty-shy [4]

Answer:

B

Step-by-step explanation:

2x = 6+14

2x = 20

x = 10

8 0

2 years ago

Determine the open t-intervals on which the curve is concave downward or concave upward. (Enter your answer using interval notat

Rashid [163]

Solution :

We have been given a parametric curve :

x = sin t , y = cos t , 0 < t < π

In order to determine concavity of the given parametric curve, we need to evaluate its second derivative first.

Therefore,

$\frac{dx}{dt} = \cos t, \ \frac{dy}{dt}= - \sin t$

$\therefore \frac{dy}{dx}= \frac{- \sin t}{\cos t}$

$=- \tan t$

Taking double derivatives of the above equation:

$\frac{d^2y}{dx^2}= - \frac{d}{dx}(\tan t)$

$= - \sec^2 t \frac{dt}{dx}$

$= - \sec^2 t \left(\frac{1}{\cos t}\right)$

$= - \sec^3 t$

For the concave up, we have

$\frac{d^2y}{dx^2} > 0$

$\Rightarrow - \sec^3 t > 0$

∴ $t \ \epsilon \left( \frac{\pi }{2}, \pi \right)$

For the concave down, we have

$\frac{d^2y}{dx^2} < 0$

$\Rightarrow - \sec^3 t < 0$

$t \ \epsilon \left( 0,\frac{\pi }{2} \right)$

8 0

2 years ago

Solve for this problem using elimination.

padilas [110]

Answer:

There is no solution to this system.

Step-by-step explanation:

To solve this problem solve the second equation for y.

2x + y = 9

y = -2x + 9

Now that we have the value of y, we can put that in for y in the first equation and solve for x.

3y = -6x + 4

3(-2x + 9) = -6x + 4

-6x + 27 = -6x + 4

27 = 4

Because this is a false statement, we know that this system has no solution.

6 0

2 years ago

Graph the domain of the function on the number line g(x)=(square root of)x+9

strojnjashka [21]

Domain: {x>= -9} x belongs to real numbers
graph is attached

5 0

3 years ago