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
Ostrovityanka [42]
3 years ago
15

Helppppppppppppppppppppppppppp

Mathematics
1 answer:
Otrada [13]3 years ago
7 0
The equation is:
y = 10 sin(π/15 t) + 30 
where 30 represents the initial height of the blade above the ground and π/15 represents the period as we are given that the blade completes two rotation every minute.Finally the 10 represents the length of the blades.

Hope this helps :)
You might be interested in
Please help❤️❤️ It’s for 20 pts!!
solong [7]
If you need part A, draw a person and label them 6 feet tall and a shadow coming off of him that is five feet long and draw a basketball hoop that and label it X feet tall and draw a shadow coming from it that is 8 feet long. To solve, you use proportions 6/5=X/8 solving this you get X=9.6 feet which is the height of the rim. Therefore, the rim does not meet regulation height, since the required height (10 feet) is greater than the actual height (9.6 feet).   
4 0
3 years ago
A carpenter is building a bookcase of height h, length 2h, and width w. The bookcase has two shelves. The plywood to be used for
tresset_1 [31]

Answer:

3h² + 35hw ;

a = 3 ; b = 2 ; c = 35

Step-by-step explanation:

Given that :

Dimension of bookcase :

Height = h ; Length = 2h ; width = w

Area of backside :

Height * length

h * 2h = 2h²

Cos of back material = $1.5 per ft²

Cost = 1.5 * 2h²

Cost = 3h²

Top and bottom :

Length * width

2h * w

Side area = 3 * h * w

Total area : Top + bottom +. Side

Total area : 2hw + 2hw + 3hw = 7hw

Pine = $5 per sq foot

Total cost = $5 * 7hw

= $35hw

Entire cost, C

3h² + 35hw

From the format :

ah^b + chw,

a = 3 ; b = 2 ; c = 35

6 0
3 years ago
Help me plz I’m struggling with this
elena-s [515]

Answer:

AC = 8√3       AC = 7.65          

A = 43.17°       AB = 16.8

B = 46.83°      B = 27°

Step-by-step explanation:

FIRST TRIANGLE

by using pythagorus theorem:

Hypo² = Base² + height²

19² = 13² + AC²

AC² = 19² - 13²

AC² = 192

AC = √192

AC = 8√3

sinФ =base/hypo

sin A = 13/19

A = sin^-1 (13/19)

A = 43.17°

43.17°+ B + 90° =180 (sum of angles of triangle)

B = 180° - 133.17°

  = 46.83°

<h3>SECOND TRIANGLE</h3>

TanФ = base/height

Tan 63° = 15 / AC

1.96 = 15/AC

AC = 15/1.96

AC = 7.65

AB² = AC² + BC²

AB² = 7.65² + 15²

AB² = 283.5

AB = √283.5

AB = 16.8

tan B = AC /BC

tanФ = 7.65/15

tanФ = 0.51

Ф = tan^-1(0.51)

B = 27°

3 0
3 years ago
Answer one of these: How was your day? Anything exciting coming up? Do u have pets? What is ur fav color?
g100num [7]

Answer:

yooo i have a headache

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Sixty-three is 90% of what number?
suter [353]
It is indeed 70, you divid 63 by 90 and your answer should be .07 so if you add that to your starting 63 you get 70
5 0
3 years ago
Other questions:
  • Find the surface are of the prism.<br> the surface area of the prism is ________ cm^2.
    7·1 answer
  • The expression (m^2/m^1/3)^1/2 is equivalent to
    13·1 answer
  • A wooden board is leaning against a house
    13·1 answer
  • (1 point) Which of the following subsets of {\mathbb R}^{3\times 3} are subspaces of {\mathbb R}^{3\times 3}? A. The diagonal 3\
    11·1 answer
  • Guys please help me it’s geometry and I really don’t know how to do these
    15·1 answer
  • The length of a rectangle is six times its width. The area of the
    13·1 answer
  • Find the inverse of the following
    5·2 answers
  • Tyrone works in a grocery store and he puts boxes on shelves. There are 4 shelves in the cereal section of the store. All shelve
    13·1 answer
  • 100 points+Brainliest for correct answer
    14·1 answer
  • (3x−1)+x2−4 when x=3 how do i solve it
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!