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
vagabundo [1.1K]
3 years ago
5

a free-falling object increases speed by a little over 22 miles per hour each second. The arithmetic sequence 22 44 66 ...., rep

resents speed after each second, in miles per hour of a dropped object. How fast is a rock falling after 8 seconds if it is dropped over the side of the cliff?
Mathematics
2 answers:
tester [92]3 years ago
6 0

Answer:

176 mph after 8 seconds

Step-by-step explanation:

This is an arithmetic sequence with common difference 22 mph and first term 22.  Thus, the nth term is a(n) = 22 + 22(n - 1).

Thus, the 8th term is a(8) = 22 + 22(7) = 176 mph

Ne4ueva [31]3 years ago
3 0

Answer:

<h2>176 miles per hour</h2>

Step-by-step explanation:

Givens

  • The object increases speed by 22 miles per hour each second.
  • The arithmetic sequence is 22, 44, 66, ...

After 8 seconds refers to the term number eight in the sequence, where the increasing difference is 22 miles per hour. So, the sequence until the second 8 is

22mi/hr, 44mi/hr, 66mi/hr, 88mi/hr, 110mi/hr, 132 mi/hr, 154mi/hr, 176mi/hr

Therefore, in the second number 8, the speed is 176 miles per hour, becuase it increases 22 miles per hour each second.

You might be interested in
Write five equivalent expressions that are equivalent to:<br> 120 + 3.6
MAVERICK [17]

Answer:

*61.8 × 2

*10.6 + 113

*247.2 divided by 2

*203.6 - 80

*111.6 + 12

3 0
3 years ago
Simplify the following expression:<br> 9^−53 ⋅ 9^37<br><br> Please also explain your answer. Thanks!
Alexus [3.1K]

Answer: 9^-16

Step-by-step explanation:

a^b*a^c= a^b+c

8 0
3 years ago
hat are the solutions to the equation |x| = 2? Choose all answers that are correct. A. B. C. D.
zalisa [80]
Easy, so absolute value makes anything inside into positive
|x|=2
therefor x=-2 or x=2 since  it would be made posotive

answer is -2 and 2

6 0
3 years ago
Read 2 more answers
PLEASE HELP QUICK! I’ll give brainleist!!!
Fudgin [204]

1. set up the equation which makes these shapes equal, 1/2(2(x+1)) = 1x

2. solve, x+1=x, 1=0

3. since this is impossible, there is no solution and zero answers

5 0
3 years ago
A bakery sells hollow chocolate spheres. The larger diameter of each sphere is 4cm. The thickness of the chocolate of each spher
Nadusha1986 [10]

Answer:

3.5 cm

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the circumferences of the circle.
    8·1 answer
  • Kenny’s weight is 6/7 times Melvin’s weight.
    9·1 answer
  • What is the equation of the line that passes through the points (3,-2) and (-1,2)
    13·1 answer
  • Brainliest to whoever gets this CORRECT.
    9·1 answer
  • Please help me asap i’ll give you a thanks and 10 points
    9·1 answer
  • The dimensions of triangle B are three times the dimensions of triangle A. The area of triangle A is 40.5 cm2.
    7·1 answer
  • A retail store makes k%
    7·1 answer
  • Can anyone tell me how to gain some weight? I Have a very high metabolism and is very difficult to keep a few pounds. I'm very s
    15·1 answer
  • Please I need someone to help my assignment​
    9·1 answer
  • What is the place value of the 6 in the number 34,260,1597
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!