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aleksklad [387]
3 years ago
10

If anyone knows what this is, please and thanks.

Mathematics
1 answer:
nlexa [21]3 years ago
6 0

Answer:

1.093

Step-by-step explanation:

A "sine regression model" is a model of a sine function with 4 different parameters normally named as: a, b, c, and d. that is returned to the user after trying to fit a set of numerical values using a sinusoidal function.

The model and parameters are normally defined as follows:

y=a*sin(bx+c) + d

The parameters  a, b, c, and d are associated with different geometric characteristics of the modeling function. For example,  a is associated with the function's amplitude,  b with the function's period via the relationship: period=\frac{2\pi }{b}, c with the function's horizontal shift via the relationship: H_s= \frac{|c|}{b} to the right if c is a negative number, and to the left if cc is a positive number. and d with the function's vertical shift.

So looking at your functional expression,

c is represented in absolute value by the number 1.093 that appears in the argument of the sine function,and indicates that there is a shift to the right from the standard sine function.

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Do the ratios 4/2 and 10/5 form a proportion? Yes or no
mars1129 [50]

Answer:

These are both 20 so that means that this is proportional, yes.

Step-by-step explanation:

Hi.

To figure this out we can do something called cross multiplying to find a cross product. If we do this and our two answers are equal then it is indeed a proportion.

Here is how we do this.

\frac{4}{2}    \frac{10}{5}

So basically what we are doing is multiplying across in a diagonal direction.

Diagonal meaning like a slash / .

So in this case we would multiply the 4 and the 5 , since they're diagonal from each other.

Do the same for the 2 and the 10.

So we have to multiply :

4 x 5

2 x 10

=

20

These are both 20 so that means that this is proportional, yes.

Hope this helps.

If you have any questions or concerns feel free to message me.

8 0
3 years ago
20 points! Brainliest! Need help
antiseptic1488 [7]

Answer:

  • n = 5q; 25q+5n = 200
  • (n, q) = (20, 4)
  • Margie has 20 nickels and 4 quarters

Step-by-step explanation:

a) Using the defined variables, we can translate the problem statements to equations:

  • n  = 5q . . . . Margie has 5 times as many nickels as quarters
  • 25q + 5n = 200 . . . . the total value of Margie's coins is 200 cents

__

b) Substituting for n, we have ...

  25q +5(5q) = 200

  50q = 200 . . . . . . . collect terms

  q = 200/50 = 4 . . . divide by the coefficient of q

  n = 5·4 = 20

The solution is (n, q) = (20, 4).

__

c) Since n represents the number of nickels Margie has, n=20 means Margie has 20 nickels. Similarly, q=4 means Margie has 4 quarters.

8 0
4 years ago
A family buys 5 airline tickets and travel insurance that costs $17 per ticket. The total cost is $850. Let x represent the pric
otez555 [7]

Answer:

850+5(x+17) (D)

153

3 0
3 years ago
Read 2 more answers
Joe drove 538 miles in 9 hours 15 minutes what was his average speed per hour
DanielleElmas [232]
To calculate any speed, the equation is speed=distance/time
Basically, you first need to take your 9 hours and 15 minutes and combine them into a number with a decimal value.
So, 15*4=60
Sound familiar? Good, because 25*4=100, so they are the same here.
So, we can say 9 hours and 15 minutes is equal to 9.25
Take this now: Speed=538/9.25
You get 58.1621, which you can round to 58.2
This is, of course, your final answer, so Joe drove at 58.16 mph
7 0
3 years ago
on a piece of paper graph y=(x+2)(x-3) then determine which answer choice best matches the graph you drew. Provide an explanatio
ioda

Answer:

option C

Step-by-step explanation:

<u>Given </u><u>:</u><u>-</u><u> </u>

  • y = (x + 2)( x -3)

And we need to tell which graph best matches the graph we drew. Firstly let's convert it into a quadratic equation by opening and simplifying the brackets.

:\implies y = ( x + 2) ( x - 3)

:\implies y = x ( x - 3)+2( x - 3)

:\implies y = x² - 3x + 2x -6

:\implies y = x² - x - 6

Now plot its graph. For that refer to attachment.

<u>Things </u><u>we </u><u>can</u><u> </u><u>interpret</u><u> </u><u>:</u><u>-</u><u> </u>

  • The constant in the equation is -6. So the graph will cut y axis 6 units below the X axis . At (-6,0)
  • From the given options , option C matches the above point .

<u>Therefore</u><u> the</u><u> </u><u>correct</u><u> </u><u>option</u><u> </u><u>is </u><u>(</u><u>C)</u><u> </u><u>.</u>

7 0
4 years ago
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