The probability that a randomly selected x-value lies between μ − 2σ and μ is the shaded area under the normal curve shown. P(μ − 2σ ≤ x ≤ μ) = 0.135 + 0.34 = 0.475

Step-by-step explanation:

5 0

4 years ago

A model rocket launched directly upward at a speed of 16 meters per second from a helght of 2 meters . The f(t) = - 4.9t ^ 2 + 1

Anton [14]

Answer:

f(t) = 15.06 m

Step-by-step explanation:

The relationship between the height of the rocket and the time after launch, t. In seconds is given by :

$f(t) = - 4.9t ^ 2 + 16t + 2$

We need to find the maximum height the rocket will reach the ground.

When it reaches the ground,

f(t) = 0

So,

Maximum height,

f'(t) = 0

$-9.8t+16=0\\\\t=\dfrac{16}{9.8}\\\\t=1.63\ s$

Put t = 1.63 in equation (1).

$f(1.63) = - 4.9\times (1.63 ^ 2) + 16(1.63) + 2\\\\=15.06\ m$

So, the maximum height of the rocket is 15.06 m.

4 0

3 years ago

What’s the answer and how you got it

Studentka2010 [4]

The answer is 616 cm squared.

14 is the radius of the circle. To find them area of a circle. You do pi x the radius squared.

4 0

4 years ago

Which of the following shapes are rectangles? Choose two answers!!!! Please helpppp !!!!!!!!!!!!!!

STALIN [3.7K]

Answer:

A&D

Step-by-step explanation:

3 0

3 years ago

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