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brilliants [131]
2 years ago
10

Given the following acceleration function of an object moving along a line, find the position function with the given initial ve

locity and position.
a(t) = -24; v(0) = 17, s(0) = 0
s(t) =
Mathematics
1 answer:
Nezavi [6.7K]2 years ago
5 0

Answer:

Position function is s(t)=-12t^2

Step-by-step explanation:

Given a(t)=-24, since velocity is the antiderivative of acceleration, then v(t)=-24t.

Also, since position is the antiderivative of velocity, then s(t)=-12t^2.

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Let represent the number of tires with low air pressure on a randomly chosen car. The probability distribution of is as follows.
Sindrei [870]

Answer:

a) P(X=3) = 0.1

b) P(X\geq 3) =1-P(X

And replacing we got:

P(X \geq 3) = 1- [0.2+0.3+0.1]= 0.4

c) P(X=4) = 0.3

d) P(X=0) = 0.2

e) E(X) =0*0.2 +1*0.3+2*0.1 +3*0.1 +4*0.3= 2

f) E(X^2)= \sum_{i=1}^n X^2_i P(X_i)

And replacing we got:

E(X^2) =0^2*0.2 +1^2*0.3+2^2*0.1 +3^2*0.1 +4^2*0.3= 6.4

And the variance would be:

Var(X0 =E(X^2)- [E(X)]^2 = 6.4 -(2^2)= 2.4

And the deviation:

\sigma =\sqrt{2.4} = 1.549

Step-by-step explanation:

We have the following distribution

x      0     1     2   3   4

P(x) 0.2 0.3 0.1 0.1 0.3

Part a

For this case:

P(X=3) = 0.1

Part b

We want this probability:

P(X\geq 3) =1-P(X

And replacing we got:

P(X \geq 3) = 1- [0.2+0.3+0.1]= 0.4

Part c

For this case we want this probability:

P(X=4) = 0.3

Part d

P(X=0) = 0.2

Part e

We can find the mean with this formula:

E(X)= \sum_{i=1}^n X_i P(X_i)

And replacing we got:

E(X) =0*0.2 +1*0.3+2*0.1 +3*0.1 +4*0.3= 2

Part f

We can find the second moment with this formula

E(X^2)= \sum_{i=1}^n X^2_i P(X_i)

And replacing we got:

E(X^2) =0^2*0.2 +1^2*0.3+2^2*0.1 +3^2*0.1 +4^2*0.3= 6.4

And the variance would be:

Var(X0 =E(X^2)- [E(X)]^2 = 6.4 -(2^2)= 2.4

And the deviation:

\sigma =\sqrt{2.4} = 1.549

4 0
3 years ago
Consider this expression. -4x to the second power 2x - 5 (1 + x) What expression is equivalent to the given expression? blank x
iren [92.7K]

Answer:

what is the blank for

Step-by-step explanation:

sorry I mean bank

6 0
3 years ago
Match each power of a power expression with its simplified expression
Nookie1986 [14]
  • (4⁰)-⁹

= 4⁰×-⁹

= 4⁰

  • (-4⁹)²

= -4⁹ײ

= -4¹⁸

=( -4)¹⁸

  • (4-³)-³

= 4-³ × -³

= 4⁹

  • (4⁶)-³

= 4⁶ × -³

= 4-¹⁸

= 1/4¹⁸

3 0
3 years ago
Which equation could represent the relationship shown in the scatter plot?
horsena [70]

Answer:

A

Step-by-step explanation:

Use POE, none of the answer makes any sense

8 0
3 years ago
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Ron Finley is a gardener who decided a few years ago to plant several gardens in South Central Los Angeles. He wants his next ga
yaroslaw [1]

Well, we can be sure that whatever the width is, we can call it ' W '. Then, from information in the question, the length of the garden is ' 3W '.

Now, the perimeter of a rectangle is (length + width + length + width). Using the fancy algebra labels I just gave them, that's (3W + W + 3W + W). And now I can go through that, add up all the Ws, and get a total of 8W for the perimeter.

But he question tells us that the perimeter is 24 yards, so 8W = 24 yds.

Divide each side of that equation by 8, and we discover that W = 3 yds. And if THAT's true, then 3W = 9 yds. Bada bing ! We have the dimensions of the garden.

It's 3 yards wide and 9 yards long.

3 0
3 years ago
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