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Gnesinka [82]
4 years ago
9

A line rotates in a horizontal plane according to the equation θ = 2t3 - 6t, where θ is the angular position of the rotating lin

e, in radians, and t is the time, in seconds. Determine the angular acceleration when t = 2 sec.
A. 24 radians per sec2
B. 12 radians per sec2
C. 18 radians per sec2
D. 6 radians per sec2
Mathematics
1 answer:
Feliz [49]4 years ago
7 0
The acceleration is the second derivative of \theta.

first derivative: 6t^2-6. Second derivative 2t. For t= 2, we get theta = 24. The correct answer is A, 24 second^2
You might be interested in
Kay Sadia sold merchandise for $7,200 subject to 8% sales tax. The entry in the general journal to record the sale will include:
Mandarinka [93]
Answer:
The entry journal to record the sale will include a debit to accounts receivable for $7776

Explanation:
The original price of merchandise = $7200
The tax is 8%
This means that when recording, kay sadia has to record the total of the original price in addition to the tax.
This means that:
Total record = original price + subject tax
Total record = 7200 + 0.08(7200)
Total record = 7200 + 576
Total record = $7776

Hope this helps :)


7 0
3 years ago
BRAINLIEST!!!<br> 12. Determine whether each pair of functions are inverse functions.
denpristay [2]

Answer:

The answer is 2nd point

Step-by-step explanation:

In this question, inverse of f(x) is equals to g(x). First, you must know how to find the inverse of f(x). In order to find the g(x), you must let f(x) = y and make x thd subject :

1.

Let y = (10x+9)/8

y = (10x+9)/8

8y = 10x + 9

8y - 9 = 10x

(8y-9)/10 = x

x = (8y-9)/10

g(x) = (8x-9)/10 (Remember to convert y back to x)

2.

Let y = x - 9

y = x - 9

y + 9 = x

x = y + 9

g(x) = x + 3

Next, by looking in no.1, the inverse of f(x) is wrong and in no.2, it shows the correct form of inverse. So only 2 is an inverse function

4 0
3 years ago
Which expression are differences of squares <br> Select each correct answer
Gennadij [26K]

Answer:

options are 3 and 4

Step-by-step explanation:

The difference of squares is defined as In option 1,

It can be written as

It is the sum of squares, therefore the option 1 is incorrect.

In option 2,

The number 40 is not a complete square of any number, therefore option 2 is incorrect.

In option 3,

It can be rewritten as

It is the difference of squares, therefore option 3 is correct.

In option 4,

It can be rewritten as

It is the difference of squares, therefore option 4 is correct.

have a good Day!

4 0
3 years ago
I suck at this math i need help
adelina 88 [10]

Answer:

I believe it's 2.1H, 2.51H

<h2>PLEASS MARK AS BRAINLIEST AND FOLLOW ME ❤️❤️❤️</h2>

7 0
3 years ago
Write the equations for 74,25a n d 49
schepotkina [342]

7425 ? 49
and = + in math
74250 + 49

8 0
4 years ago
Read 2 more answers
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