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
Aloiza [94]
3 years ago
15

A car starts with a speed of 20km/ hr and accelerates at a rate of 3.4 m/s for 20 seconds. What is the final speed of the car in

km/hr?
Mathematics
1 answer:
Schach [20]3 years ago
5 0

The relevant formula that we can use in this situation is:

v = v0 + at

where v is the final velocity, v0 is the initial velocity = 20 km/hr, a is acceleration at 3.4 m/s^2 and t is time at 20 seconds

First convert v0 to m/s, v0 = 5.56 m/s

v = 5.56 m/s + 3.4 m/s^2 * 20 s

v = 73.56 m/s

Then convert back to km/hr:

<span>v = 264.82 km/hr</span>

You might be interested in
Can someone pls help!
stira [4]

Answer:

I'm not quite sure, but I think 3. v= 5 × 32 × 10

and the rest I'm not sure.

7 0
2 years ago
Read 2 more answers
Which best describes the line of symmetry in the letter M
Deffense [45]

Answer:

horizontal lines of symmetry

Step-by-step explanation:

8 0
3 years ago
7(y+2)<br> What is equivalent
kari74 [83]

Answer:

7y + 14

Step-by-step explanation:

7(y+2) = 7y + 14

6 0
3 years ago
Read 2 more answers
Please help me with these two math problems that I do not quite understand. This is urgent!
g100num [7]

Answer:

1)a_{n}=a_{1}+(n-1)d\Rightarrow a_{n}=-1-2(n-1)\\a_{2}=-1-2(2-1)\Rightarrow a_{2}=-3\\a_{3}=-1-2(3-1)\Rightarrow a_{3}=-5\\(...)\\a_{10}=-1-2(10-1)=-19

2) a_{10}=4+8(10-1)\Rightarrow a_{10}=76

Step-by-step explanation:

1) To write an Arithmetic Sequence, as an Explicit Term, is to write a general formula to find any term for this sequence following this pattern:

a_{n}=a_{1}+d(n-1)\Rightarrow \left\{\begin{matrix}a_{n}=n^{th}\: term\\a_1=1st \: term \\d=\: difference\\n=n^{th}\, term\end{matrix}\right.

<em>"Write an explicit formula for each explicit formula A(n)=-1+(n-1)(-2)"</em>

This isn't quite clear. So, assuming you meant

Write an explicit formula for each term of this sequence A(n)=-1+(n-1)(-2)

As this A(n)=-1+(n-1)(-2)  is already an Explicit Formula, since it is given the first term a_{1}=-1 the common difference d=-2 let's find some terms of this Sequence through this Explicit Formula:

a_{n}=a_{1}+(n-1)d\Rightarrow a_{n}=-1-2(n-1)\\a_{2}=-1-2(2-1)\Rightarrow a_{2}=-3\\a_{3}=-1-2(3-1)\Rightarrow a_{3}=-5\\(...)\\a_{10}=-1-2(10-1)=-19

2) (4,12,20,28, ..) In this Arithmetic Sequence the common difference is 8, the first term value is 4.

Then, just plug in the first term and the common difference into the explicit formula:

a_{10}=4+8(10-1)\Rightarrow a_{10}=76

6 0
2 years ago
I am a square. My perimeter is 48 inches what is my area?
Fynjy0 [20]

Answer:

area=144

Step-by-step explanation:

so we need to find the length of each side

since its a square there is 4 sides

perimeter is all the sides added up

48/4=12

the formula for a squares are is b*h

12*12= 144

3 0
3 years ago
Read 2 more answers
Other questions:
  • How much greater is the area of a square with a side length of 9 inches than the area of a circle with a radius of 3 inches?
    11·1 answer
  • What are the zeros of this polynomial and state their multiplicity at each <br> y=(x-5)(x+2)^2
    14·1 answer
  • How many integers at between 15 and 63?
    7·2 answers
  • Which statement best illustrates the theories of Prince Klemens von Metternich?
    13·1 answer
  • Solve for x<br> 6(2x + 1) = 18
    5·2 answers
  • PLEASE HALP MEEEEEEeeeee
    5·1 answer
  • Which of the following graphs shows a system with a infinite number of solutions
    10·1 answer
  • Laura can finish payroll in 3 hours. it takes ben 5 hours to do the same job. If they work together, how long should it take the
    11·1 answer
  • A bakery sells 6 bagels for $3.99 and 4 muffins for $2.29. What is the total
    9·1 answer
  • agent bourne transferred classified files from the cia mainframe into his flash drive. the drive has 72 megabytes on it before t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!