1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
FinnZ [79.3K]
3 years ago
8

On Dolphin Beach, the high tide is 2.2 meters and only occurs at 12 a.m. and 12 p.m. The low tide is 1 meter and only occurs at

6 a.m. and 6 p.m.
Which function models the height of the tide t hours after 12 a.m.?


h(t) = 0.6 sin (πt/6) + 1.6
h(t) = 1.6 sin (πt/3) + 2.2
h(t) = 1.2 cos (πt/3) + 1
h(t) = 0.6 cos (πt/6) + 1.6
Mathematics
1 answer:
Arisa [49]3 years ago
4 0

Answer:

D

Step-by-step explanation:

maximum at 12am which is time, t = 0 and 12pm which is time, t = 12

so we’ll use a cosine function since no phase shift is given.

period, T: 1 cycle = 2π and time taken to complete one cycle is 12hrs

T = 2π/(12) = ⅙π

med-line = ½(1 + 2.2) = 1.6

and thus amplitude = 1.6 - 1 = 0.6 or 2.2 - 1.6 = 0.6

h(t) = 0.6 cos(⅙πt ) + 1.6

ANS: D  Can I get brainliest on this please because I only need two more until virtuoso

You might be interested in
Find the x-intercepts of the parabola with vertex (1,-108) and y-intercept (0,-105). Write your answer in this form: (X1,y1), (x
Stolb23 [73]

Answer:

(7, 0) and (-5, 0)

Step-by-step explanation:

<u>Vertex form</u>

y=a(x-h)^2+k  

(where (h, k) is the vertex)

Given:

  • vertex = (1, -108)

\implies y=a(x-1)^2-108

Given:

  • y-intercept = (0, -105)

\implies a(0-1)^2-108=-105

\implies a(-1)^2=-105+108

\implies a=3

Therefore:

\implies y=3(x-1)^2-108

The x-intercepts are when y = 0

\implies 3(x-1)^2-108=0

\implies 3(x-1)^2=108

\implies (x-1)^2=36

\implies x-1=\pm \sqrt{36}

\implies x=1\pm 6

\implies x=7, x=-5

Therefore, the x-intercepts are (7, 0) and (-5, 0)

7 0
2 years ago
verify that 1,-1,-3 are the zeroes of the cubic polynomial x3+3x2-x-3 and check the relationship between zeroes and the coeffici
Vikentia [17]

Answer: yea its 123445

Step-by-step explanation:

6 0
3 years ago
Which degree of rotation is equivalent to a 90 degree clockwise rotation?
vodomira [7]
The answer will be A....
6 0
3 years ago
Simplify the expression.<br> 3(2+q)+15 simplified is
chubhunter [2.5K]

Answer:

3q+21

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
98 points possible
Pavel [41]

Answer:

Step-by-step explanation:

symmetry with respect to y-axis for y=f(x) means f(-x)=f(x)

in this case, y = f(x) = x / (x^2+4)

f(-x) = -x / ((-x)^2+4) = -x / (x^2+4) = -f(x)

so it is not symmetric to y-axis

symmetry with respect to x-axis for x=g(y) means g(-y)=g(y)

in this case, y = x / (x^2+4)

y*(x^2+4) = x

y*x^2 + 4y - x = 0

substitute -y into g(y)

(-y)*x^2 +4(-y) - x = 0

-y*x^2 - 4y - x = 0

y*x^2 + 4y + x = 0

so g(-y) is not equal to g(y)

so it is not symmetric to x-axis

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which will result in a perfect square trinomial?
    9·1 answer
  • If a rectangular prism and a cylinder have the same height and volume, what is their cross sectional area parallel to the bases
    6·2 answers
  • Jimmy can oil the lanes in a bowling alley in eight hours. Perry can oil the same lanes in nine hours. How long would it take th
    15·1 answer
  • Which expression is equivalent to (0.5n−0.3)−(0.8n−0.9)?
    12·2 answers
  • 250% of what number 152.5
    15·1 answer
  • Please help me! Answer will get marked brainliest. ASAP! THANK U
    14·2 answers
  • WILL GIVE BRAINLIST
    6·1 answer
  • An initial investment of $1000 grows at an interest rate of 4% per year. How long will it take that investment to reach $1,500?
    11·1 answer
  • Imal ikoga iz Bosne?​
    15·2 answers
  • The value 0.01 is the maximum safe level of some naturally occurring lethal pollutant in drinking water for human consumption. Y
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!