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sweet-ann [11.9K]
2 years ago
14

. You got 46 out of 65 questions right on your exam. What's your grade?

Mathematics
2 answers:
larisa86 [58]2 years ago
8 0

Answer:

about like 8 /10

Step-by-step explanation:

IRISSAK [1]2 years ago
5 0

Answer:

B

Step-by-step explanation:

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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
The length is 2 feet longer than the width. The perimeter is 36 feet, what is the length?
SOVA2 [1]

Answer:

The length would be 10ft and the width would be 8ft

Step-by-step explanation:

For the purpose of this, we'll set the width as x. We can then define the length as x + 2 since we know it is 2 ft longer than the width. Now we can use those along with the perimeter formula to solve for the width.

P = 2l + 2w

36 = 2(x + 2) + 2(x)

36 = 2x + 4 + 2x

36 = 4x + 4

32 = 4x

8 = x

Now since we know that the width is 8ft, we can add 2ft to it to get the length, which would be 10ft.

4 0
3 years ago
HELLPPP ASAP PLEASEEE!!!
irina1246 [14]

Answer:

angle G = 64.9 is because the sum of interior angle is 180

7 0
2 years ago
Help I need this badlyuu
Alex Ar [27]
It is 2/3 I believe

By calculating the difference between the x and y coordinates, and putting it in the rise/run format, you can easily find the slope of the line
4 0
2 years ago
A baby gains 11 pounds in its first year of life. The baby gained 45 pounds during the first four months and 3 pounds in
kifflom [539]

Answer:

4 pound is the right answer

Mark me as a brilliant

6 0
2 years ago
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