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
6

"if a 40-pound weight stretches the spring 4 inches, ,find the distance that a 45-pound weight stretchs the spring"

Mathematics
1 answer:
shepuryov [24]3 years ago
3 0
40=4x then 45=4.5x solving "x" as 1 in per 10 pounds. 
You might be interested in
Plz help with 4!!!!!!!!!!!!!!!!!!!!
Juliette [100K]

Answer:

A (-5,3)

B (3,4)

C (2,-1)

D (3,-5)

E (-3,-4)

F (-2,1)

6 0
3 years ago
A train slows down as it rounds a sharp horizontal turn, going from 92.0 km/h to 54.0 km/h in the 16.0 s that it takes to round
Mnenie [13.5K]

Calculation of centripetal acceleration(ac):

a_c=\frac{v^2}{r}

we can change our speed in terms of m/s

v=54km/h=54*\frac{1000}{3600} m/s

now, we can plug these values

a_c=\frac{(54*\frac{1000}{3600})^2}{130}

a_c=1.73077m/s^2

Calculation of tangential acceleration(at):

a_t=\frac{\Delta v}{\Delta t}

now, we can plug values

a_t=\frac{(54-92)*\frac{1000}{3600} }{16}

now, we can simplify it

a_t=-0.65972 m/s^2

Calculation of resultant acceleration:

a=\sqrt{(a_c)^2+(a_t)^2}

now, we can plug values

a=\sqrt{(1.73077)^2+(-0.65972)^2}

a=1.85224m/s^2.............Answer

4 0
3 years ago
Tristan is 22 years younger than Sydney. 8 years ago, Sydney's age was 2 times Tristan's age. How old is Tristan now?
Serjik [45]

Answer:

Sydney is 52 years old, and Tristan is 30.

Step-by-step explanation:

Represent Tristan's age by t and Sydney's by s.

Then s - 8 = 2(t - 8), and t = s - 22

Substituting s - 22 in the first equation, we get:

s - 8 = 2(s - 22 - 8), or

s - 8 = 2s - 60

Solving for s:  -2s + s = -60 + 8, or -s = -52.

Sydney is 52 years old, and Tristan is 30.

4 0
3 years ago
a diver is swimming at -10 m. He then descends 3m and rises 6m. At what new level is the diver swimming?
iVinArrow [24]
So we start at -10. Because he descends 3 feet, We subtract 3, getting -13. He then rises 6 feet. -13 + 6 = -7. The diver is now at -7 feet. 
7 0
3 years ago
Read 2 more answers
How much did Mr Lancaster donate the foundational
lesya692 [45]
$250,000,064 is thee answer I think
4 0
3 years ago
Other questions:
  • A sphere and cylinder have the same radius and height. The volume of the cylinder is 30m^3. What is the volume of the sphere?
    8·1 answer
  • How many feet are in 108 inches?
    5·2 answers
  • A cube with 4 faces has a length of 4.5cm.find the total surface area​
    7·2 answers
  • ANSWER THIS ASAP RIGHT ANSWER WILL GET BRAINLIST !!!
    9·1 answer
  • You invest $720 in an account that has an annual interest rate of 6.2%, compounded semiannually. How much money will be in the a
    13·1 answer
  • Three terms of an arithmetic sequence are shown below. Which recursive formula defines the sequence?
    11·1 answer
  • Which point is an x-intercept of the quadratic function<br> f(x) = (x + 6)(x – 3)?
    15·2 answers
  • Last Saturday Allyson had $38. For her birthday she received more money. She now has $90. How much more money, m, did she receiv
    8·2 answers
  • What's the exponential form of log 10=1
    13·1 answer
  • Help now ____________[_
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!