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
Alina [70]
3 years ago
9

What the answerr please​

Mathematics
1 answer:
Shkiper50 [21]3 years ago
3 0

Answer:

B

Step-by-step explanation:

Rise over run

You might be interested in
HELP ME PLEASE!! im being timed :(
jeka57 [31]

Answer:

the first one and the third one

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
If θ=0rad at t=0s, what is the blade's angular position at t=20s
babunello [35]
The attached figure represents the relation between ω (rpm) and t (seconds)
To find the blade's angular position in radians ⇒ ω will be converted from (rpm) to (rad/s)
              ω = 250 (rpm) = 250 * (2π/60) = (25/3)π    rad/s
              ω = 100 (rpm) = 100 * (2π/60) = (10/3)π    rad/s

and from the figure it is clear that the operation is at constant speed but with variable levels
            ⇒   ω = dθ/dt   ⇒   dθ = ω dt

            ∴    θ = ∫₀²⁰  ω dt  
 
while ω is not fixed from (t = 0) to (t =20)
the integral will divided to 3 integrals as follow;
       ω = 0                                          from t = 0  to t = 5
       ω = 250 (rpm) = (25/3)π            from t = 5   to t = 15
       ω = 100 (rpm) = (10/3)π            from t = 15 to t = 20

∴ θ = ∫₀⁵  (0) dt   + ∫₅¹⁵  (25/3)π dt + ∫₁₅²⁰  (10/3)π dt
     
the first integral = 0
the second integral = (25/3)π t = (25/3)π (15-5) = (250/3)π
the third integral = (10/3)π t = (25/3)π (20-15) = (50/3)π

∴ θ = 0 + (250/3)π + (50/3)π = 100 π

while the complete revolution = 2π
so instantaneously at t = 20
∴ θ = 100 π - 50 * 2 π = 0 rad

Which mean:
the blade will be at zero position making no of revolution = (100π)/(2π) = 50
















3 0
3 years ago
Caytee’s Confections produces white chocolate chips and milk chocolate chips at its plants in Elizabeth City and Asheville.
Zepler [3.9K]
3000x + 1000y < 30000
2000x + 6000y < 30000

x = 7.5
y = 7.5

3 0
3 years ago
How to show that a function is surjective?
photoshop1234 [79]
Algebra formula based function
6 0
2 years ago
A computer store recieves 351 visitors in 9 days. At what rate does the computer store recieve visitors?
zimovet [89]

Answer:

351 divided by 9 = 39 so 39 visitors every day

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which relation is a function?
    10·1 answer
  • How could you use division to find out how many whole pies are in 11/3 of a pie? explain!!!!!!
    11·2 answers
  • Write an equation of a line that passes thought he point (-5,2) And is parallel to the line represent by the equation 2x + 5y =
    12·1 answer
  • What is 4,124.307 rounded to the nearest hundredth?
    12·2 answers
  • Adam rolls a die 96 times. How many times can he expect to roll a 4?
    9·1 answer
  • You have two pairs of sneakers. One pair of sneakers is currently worth $80 and its value increases by $5 per month. The other p
    13·1 answer
  • NEED ANSWERS ASAP THREE POINTERS
    10·1 answer
  • Please help me solve this asap.<br> (step by step explanation)
    8·1 answer
  • Ok so I know what 2 X 8 is but I have no idea how to put the answer into the system I keep trying but it’s not working
    5·1 answer
  • Evaluate the following<br> a) 4!=<br> b) 0!=<br> c) 2! + 3!=<br> d) 3! x 4!<br> e) 10! / 7!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!