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
kotegsom [21]
3 years ago
14

Let a function y represent the water level in a harbor measured in meters, and let x represent the number of hours

Mathematics
1 answer:
svp [43]3 years ago
6 0

Answer:

2.2 hours

Step-by-step explanation:

The equation to graph is

4.5cos(4pi/25 x)+15

Find amplitude by subtracting min from max and dividing it by two. a=4.5

Find vertical shift k by finding the midline. Either add 4.5 to 10.5 or subtract 4.5 from 19.5. k = 15

The period is given to be 12.5. Use formula 2pi/b = period to find b. b = 4pi/25

Put the equation into graphing calculator and find what x equals when the graph is 17 (for the first time)

You might be interested in
If 6-x=2(x-6) what is the value of x? need steps!!
V125BC [204]
6 - x = 2(x - 6)

the first step, following PEMDAS, is to distribute the 2 to the inside of your parentheses:
6 - x = 2x - 12 ... subtract 2x
6 - 3x = -12 ... subtract 6
-3x = -18 ... divide by -3
x = 6 is the answer
8 0
3 years ago
Read 2 more answers
Need help with this question plz.Will Give BRAINLIEST
Ierofanga [76]
For the first one his car used 8/340 or 2/85 gallons for one mile.

After the fix, his car 7/350 or 1/50 gallons for one mile.

Then you subtract 1/50-2/85 to get (17-10)/850 or 7/850.

You multiply this by 4 to get 28/850 which is $0.0329411

Since it is asking for cents you multiply by 100 to get approximately 3 cents.
5 0
2 years ago
Which number is distributed in this expression 5(3 + 2 + 8)? *
Agata [3.3K]

Answer:

c.5

Step-by-step explanation:

5(3 + 2 + 8)

The number outside of the parenthesis is distributed to the numbers inside of the parenthesis

5 0
3 years ago
Read 2 more answers
Please help me thanks
BabaBlast [244]

Answer:

16.7

Step-by-step explanation:

We can use the Pythagorean theorem, a^2 + b^2 = c^2.

a = 11

c = 20

11^2 + b^2 = 20^2

121 + b^2 = 400

b^2 = 279

b = sqrt(279) = 16.7

5 0
3 years ago
How far from an airport can an airplane fly and return in 8 hours, if it's outgoing speed is 160 km per hour and it's returning
PilotLPTM [1.2K]
<span>speed = distance/time
total time is 8 hours

outgoing speed is 160 km per hour, 
so time = d/160

</span><span>returning speed is 240 km per hour,
so time = d/240

 d/160 + d/240 = 8

3d/480 + 2d/480 = 8
5d/480 = 8
5d =480 (8)
5d = 3840
d=3840/5
d=768

answer: so the distance is 768 km</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Mrs. Brown needs $5,000 in three years. If the interest rate on her investment account is 8.4% compounded monthly, how much shou
    14·1 answer
  • Is .634 repeating a whole number
    7·2 answers
  • Can someone help me with this? It’s dues tomorrow this is for science but there’s no science
    5·1 answer
  • What's The Strangest Thing In Your Refrigerator?
    14·1 answer
  • SOLVE EQUATION BY TAKING SQUARE ROOTS.<br> -100+81a^2=0
    12·2 answers
  • HELPPPPP ASAAAAP!!!!!!!
    13·1 answer
  • Graphing lines in slope intercept form
    10·1 answer
  • A function is shown below.
    10·1 answer
  • What is 246,588 rounded to the ten thousands place?
    10·1 answer
  • Function or not a function
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!