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Korvikt [17]
3 years ago
12

Find the value of X please!!!

Mathematics
2 answers:
dybincka [34]3 years ago
8 0

Answer:

What are we finding for X?

Step-by-step explanation:

Debora [2.8K]3 years ago
3 0

Because the polygons are similar... we can create this proportion relationship.

\frac{8}{10} = \frac{4}{x}

Using cross multiplication...

4·10=8x

8x=40

x=5

answer: x=5

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The day length in Manila, Philippines, varies over time in a periodic way that can be modeled by a trigonometric function.
iris [78.8K]

Answer:

  • L(t) = 727.775 -51.875cos(2π(t +11)/365)
  • 705.93 minutes

Step-by-step explanation:

a) The midline of the function is the average of the peak values:

  (675.85 +779.60)/2 = 727.725 . . . minutes

The amplitude of the function is half the difference of the peak values:

  (779.60 -675.85)/2 = 51.875 . . . minutes

Since the minimum of the function is closest to the origin, we choose to use the negative cosine function as the parent function.

Where t is the number of days from 1 January, we want to shift the graph 11 units to the left, so we will use (t+11) in our function definition.

Since the period is 365 days, we will use (2π/365) as the scale factor for the argument of the cosine function.

Our formula is ...

  L(t) = 727.775 -51.875cos(2π(t +11)/365)

__

b) L(55) ≈ 705.93 minutes

8 0
3 years ago
Rewrite the function by completing the square. h(x)= 4 x^{2} -36 x +81
noname [10]

Answer:

4(x-4.5)^2

Step-by-step explanation:

h(x)=4x^2-36x+81

=4(x^2-9x)+81

=4(x^2-9x+20.25)-(4)(20.25)+81

=4(x-4.5)^2

6 0
3 years ago
Solve log base 2 of one over thirty two.
SSSSS [86.1K]
It’s in this picture:)

8 0
3 years ago
Read 2 more answers
Need help ASAP!!!!!!!!!!
Marysya12 [62]

Answer:

the last two

Step-by-step explanation:

8 0
3 years ago
Make a number line and show all values of x such that x<1/3 and x>0
FromTheMoon [43]

Answer:

<-|---------------|----------------|--------------|->

 0                1/3              2/3             1

Step-by-step explanation:

easy peasy

8 0
3 years ago
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