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
hjlf
3 years ago
7

I need help with this problem

Mathematics
1 answer:
Elis [28]3 years ago
6 0
-32/1. Is the answer you just divide too and bottom by the bottom number which 3 is an common factor in both #,s
You might be interested in
SOMEONE PLEASE ANSWER ASAP FOR BRAINLIEST!!!!!
Angelina_Jolie [31]
The formula is D=PT/F
3 0
3 years ago
Read 2 more answers
For the equation W = -175t + 8,750, how much water is left after 6 hours?
barxatty [35]

Answer:

7,700

Step-by-step explanation:

-175 x 6 = -1,050

-1,050 + 8,750 = 7,700

5 0
3 years ago
A student dropped a textbook from the top floor of his dorm and it fell according to the formula s(t) = −16t 2 + 8√t , where t i
Sidana [21]

Answer:

<h2>-29.61m/s</h2>

Step-by-step explanation:

Given the distance of fall of the student in term of the time t expressed by the equation s(t) = −16t² + 8√t, to get the average speed of fall of the pencil after 2.8 secs, we will need to differentiate the given function first since Velocity is the change in distance of a body with respect to time i.e

V = d(s(t))/dt

s(t) = −16t² + 8t^1/2

V = -32t+1/2(8)t^(1/2 - 1)

V = -32t+4t^-1/2

The average speed of the fall Using the fact that the pencil hit the ground in exactly 2.8 seconds, will be gotten by substituting t = 2.8 into the resulting equation.

V = -32t+4(2.8)^-1/2

V = -32t+4/√2.8

V = -32+4/1.6733

V = -32+2.391

v = -29.61m/s

<em>Hence the average speed of the fall is -29.61m/s</em>

3 0
3 years ago
Five years ago, John's age was half of the age he will be in 8 years. How old is he now?
notka56 [123]
J-5=0.5J+8
J=0.5J+13
0.5J=13
J=26
8 0
2 years ago
Read 2 more answers
A 40-m-long chain hangs vertically from a cylinder attached to a winch. Assume there is no friction in the system and the chain
daser333 [38]

Answer:

a) W₁ = 78400 [J]

b)Wt = 82320 [J]  

Step-by-step explanation:

a) W = ∫ f*dl      general expression for work

If we have a chain with density of 10 Kg/m, distributed weight would be

9.8 m/s² * 10 kg   = mg

Total length of th chain is 40 m, and the function of y at any time is

f(y) = (40 - y ) mg   where ( 40 - y ) is te length of chain to be winded

At the beggining we have to wind 40 meters   y = 0 at the end of the proccess  y = 40 and there is nothing to wind then:

f(y) = mg* (40 - y )

W₁ =  ∫f(y) * dy    ⇒ W₁ = ∫₀⁴⁰ mg* (40 - y ) dy  ⇒ W₁ = mg [ ∫₀⁴⁰ 40dy - ∫₀⁴⁰ ydy

W₁ = mg [ 40*y |₀⁴⁰   -  1/2 * y²  |₀⁴⁰    ⇒  W₁ = mg* [ 40*40 - 1/2 (40)² ]

W₁ = mg * [1/2]     W₁ = 10*9,8* ( 800 )

W₁ = 78400 [J]

b) Now we can calculate work to do if we have a 25 block and the chain is weightless

W₂ = ∫ mg* dy     ⇒    W₂  = ∫₀⁴⁰ mg*dy   ⇒    W₂  = mg y |₀⁴⁰

W₂ = mg* 40   = 10*9.8* 40  

W₂ = 3920 [J]

Total work

Wt = W₁  +  W₂        ⇒    Wt = 78400 + 3920

Wt = 82320 [J]

6 0
3 years ago
Other questions:
  • Anyone else bored? It's too short. Write at least 20 characters to get a great answer.
    7·2 answers
  • What is the answer for x. x/2=9
    8·2 answers
  • Translate the phrase into an algebraic expression<br> The sum of x and 7
    12·1 answer
  • HLPE QUICK PLEASE!! WILL GIVE BRAINLIEST!
    11·2 answers
  • Can someone help me with this? i'll award brainiest :D
    10·1 answer
  • D
    11·1 answer
  • The cost of cloth is directly proportional to the length. A 3.2-metre length of cloth costs $38
    8·1 answer
  • Find the area of a circle with a diameter of 10 feet
    5·2 answers
  • Is 0.400 percent chance good or bad ?
    9·1 answer
  • Solve for X.<br> - 4x + 10 = 50
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!