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
Alika [10]
3 years ago
15

The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation

s every minute. Which of the following equations can be used to model h, the height in feet of the end of one blade, as a function of time, t, in seconds? Assume that the blade is pointing to the right, parallel to the ground at t = 0 seconds, and that the windmill turns counterclockwise at a constant rate.
Mathematics
2 answers:
Alona [7]3 years ago
5 0

Answer:

h = 10sin(π15t)+35

Step-by-step explanation:

The height of the blade as a function f time can be written in the following way:

h = Asin(xt) + B, where:

B represets the initial height of the blade above the ground.

A represents the amplitud of length of the blade.

x represents the period.

The initial height is 35 ft, therefore, B = 35ft.

The amplotud of lenth of the blade is 10ft, therefore A = 10.

The period is two rotations every minute, therefore the period should be 60/4 = 15. Then x = 15π

Finally the equation that can be used to model h is:

h = 10sin(π15t)+35

stira [4]3 years ago
4 0

Answer- C.) h = 10sin(π/15t)+35

Step-by-step explanation-

The equation should be equal expressed as C.) h = 10sin(π15t)+35 where 35 represents the initial height of the blade above the ground. The 15π represents the period. It is said that the blades complete two rotations every minute. Hence the period should be 60/4 equal to 15. 10 represents the amplitude of length of the blades.

You might be interested in
Simplify the following expression.<br> ​<br> ​ 15p+15p+25p =​
IrinaK [193]

​ 15p+15p+25p=​30p+25p=55p

3 0
3 years ago
Find the ratio. Sam ran 3520 feet in 20 minutes.
Rufina [12.5K]
3520:20 should be correct
8 0
3 years ago
Read 2 more answers
EXPERTS PLEASE HELP!!!!!!!!!!!!!!
Arturiano [62]

Answer:

1. D

2. x=65

Step-by-step explanation:

Hi!

Your answer is D because 78 is 120% of x

120% in decimal point is 1.2.

So it's 1.2x is the same as 120% of x

For question 8:

1.2x=78

Isolate x by divide 1.2 on both sides

78/1.2=65

7 0
2 years ago
What is the arc length of an angle of 2π 3 radians formed on the unit circle? A) π 3 B) 2π 3 C) 4π 3 D) 5π 3
mars1129 [50]
We know that
in a unit circle the radius is 1
therefore
[Length of a circumference]=2*pi*r------> 2*pi

if 2pi radians in a circle unit has a length of ------------>  2*pi
2pi/3 radians----------------------------> X
X=2pi/3

the answer is 2pi/3

5 0
3 years ago
Read 2 more answers
Question 17 of 25
belka [17]

Answer:

B

Step-by-step explanation:

10 ÷ 8

=0.8

≈1% probability

4 0
3 years ago
Other questions:
  • Can somebody help this is due in an hour
    11·2 answers
  • Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation. If y
    7·1 answer
  • Solve each system by graphing: y=-1/2x+2 y=-3/2x-2
    15·1 answer
  • Find the amount of compound interest earned with a principal rate of $925, rate of 6%, compounded quarterly, for 8 years with a
    10·1 answer
  • The original price of a tortoise is
    5·2 answers
  • There are 2 grape juice boxes and 4 apple juice boxes in the cooler. If Matt takes one from the cooler without looking, what is
    7·1 answer
  • I REALLY NEED HELP WITH THIS PROBLEM
    7·1 answer
  • Gabrielle’s age is two times mikhail’s age. The sum of their ages is 60.what is makhail age?
    9·2 answers
  • I need help on this question please!!!
    10·1 answer
  • 1+1-1×1÷1 = ?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!