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
Leya [2.2K]
3 years ago
16

W²-5w+14

Engineering
1 answer:
alexira [117]3 years ago
7 0

Answer:w²-5w+14

4x²+11x+16

6x²+7x-10

x²-16x+56

Explanation:

You might be interested in
An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A police car observed the automobile. A
irina [24]

An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A police car observed the automobile. At the instant that the two vehicles are abreast of each other, the police car starts to pursue the automobile at a constant acceleration of 1.96 m/s2 . The motorist noticed the police car in his rear view mirror 12 s after the police car started the pursuit and applied his brakes and decelerates at 3.05 m/s2

Find the total time required for the police car  to over take the automobile.

Answer:

15.02 sec

Explanation:

The total time required for the police car to overtake the automobile is related to the distance covered by both  cars which is equal from instant point of abreast.

So; we can say :

D_{pursuit} =D_{police}

By using the second equation of motion to find the distance S;

S= ut + \dfrac{1}{2}at^2

D_{pursuit} = (15.65 *12 )+(15.65 (t)+ (\dfrac{1}{2}*(-3.05)t^2)

D_{pursuit} = (187.8)+(15.65 \ t)-0.5*(3.05)t^2)

D_{pursuit} = (187.8+15.65 \ t-1.525 t^2)

D_{police} = ut _P + \dfrac{1}{2}at_p^2

where ;

u  = 0

D_{police} =  \dfrac{1}{2}at_p^2

D_{police} =  \dfrac{1}{2}*(1.96)*(t+12)^2

D_{police} = 0.98*(t+12)^2

D_{police} = 0.98*(t^2 + 144 + 24t)

D_{police} = 0.98t^2 + 141.12 + 23.52t

Recall that:

D_{pursuit} =D_{police}

(187.8+15.65 \ t-1.525 t^2)=  0.98t^2 + 141.12 + 23.52t

(187.8 - 141.12)  + (15.65 \ t  -  23.52t)  -( 1.525 t^2    - 0.98t^2)  =   0

= 46.68 - 7.85 t -2.505 t² = 0

Solving by using quadratic equation;

t = -6.16 OR  t = 3.02

Since we can only take consideration of the value with a  positive integer only; then t = 3.02 secs

From the question; The motorist noticed the police car in his rear view mirror 12 s after the police car started the pursuit;

Therefore ; the total time  required for the police car  to over take the automobile = 12 s + 3.02 s

Total time  required for the police car  to over take the automobile = 15.02 sec

8 0
2 years ago
All boats must have a light on the boat but there are no rules as to wear it has to be *
Anastaziya [24]

Answer:

PLS IF YOU FIND IT HELPFUL GIVE ME BRAINLIEST

Explanation:

true

5 0
3 years ago
Calculate the mean and median of the following
AfilCa [17]

Answer:

mean:24/5

ascending order:1,2,3,4,5,5,6,6,7,9

median:5

8 0
2 years ago
Ethan is an engineer who is trying to create a totally quiet fluid power system. Which part of the fluid power system will he ne
creativ13 [48]

Answer:

C: compressor

Explanation:

As it states in the text, Unfortunately, the pump or compressor in a fluid power system is often noisy and heavy. This aspect of the fluid power system is a critical area of interest for engineers and scientists who seek to improve fluid power.

3 0
3 years ago
Read 2 more answers
Choosing to purchase which of the following is likely most harmful to orangutans? Chocolate spreads that contain palm oil. Cold
Ksju [112]

Answer:

The answer is Chocolate spread that contain palm oil.

Explanation:

Based on research, it is estimated that between 1,000 to 5,000 orangutans are killed in Palm Oil concessions.

5 0
3 years ago
Read 2 more answers
Other questions:
  • A closed, rigid tank is filled with a gas modeled as an ideal gas, initially at 27°C and a gage pressure of 300 kPa. If the gas
    8·1 answer
  • An electric current of transports of charge. Calculate the time this took. Be sure your answer has the correct unit symbol and s
    5·1 answer
  • In terms of the atomic radius, R, determine the distance between the centers of adjacent atoms for the FCC crystal structure alo
    15·1 answer
  • Guys i need help and some ones please help me
    12·1 answer
  • FREE 50 points & maybe one brain liest
    5·2 answers
  • Which of the following placards allows a driver to park in a handicapped parking space.
    9·2 answers
  • A reservoir is 1 km wide and 10 km long and has an average depth of 100m. Every hour, 0.1% of the reservoir's volume drops throu
    5·1 answer
  • 4. Long term marijuana use can cause
    12·2 answers
  • What is the role of engineers in nation building <br><br>​
    13·2 answers
  • 3. (5%) you would like to physically separate different materials in a scrap recycling plant. describe at least one method that
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!