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
anygoal [31]
3 years ago
14

The wheels on Annie's bicycle are $20$ inches in diameter. If each wheel makes $3$ full revolutions every second, then how many

feet does Annie travel in $1$ second? Give your answer as an integer, rounded to the nearest foot.
Mathematics
1 answer:
NISA [10]3 years ago
5 0
We have that
diameter=20 in---------------> r=d/2--------> 20/2---------> r=10 in
[length of a circumference]=2*pi*r-------> 2*pi*10-------> 20*pi in

we know that
 1 revolution----------------> 20*pi in
3 revolutions (one second)----------------> X
X=3*20*pi---------> X=60*pi in  ( this is in one second)

1 foot--------------> is equal to 12 in
X-----------------> 60*pi in
X=60*pi/12--------> 5*pi ft------------> 15.708 ft---------> 16 ft (in one second)

the answer is
16 ft/sec
You might be interested in
Plsss helppp brainkeistt reward
Mrac [35]

Answer:

1. D

2. B

3. A

4. B

6 0
3 years ago
What is the measure of Angle B A C?
Simora [160]
It's 180-50-50=180-100=80°
8 0
3 years ago
HELP ME I NEED HELP LIKE RIGHT NOW OH GOSH
nataly862011 [7]

Answer:

Step-by-step explanation:

is this in a test

7 0
2 years ago
What is the ratio of 7200 to 6400?
stira [4]
The ratio of 7200 to 6400 equals 1.125 in decimal form. I hope this helps!:)
5 0
3 years ago
Read 2 more answers
What is x? I will give brainliest if you explain your answer.
horsena [70]

Answer:

  • x =  {0, π/2, 3π/2, 2π}

Step-by-step explanation:

  • cotx cos x - cot x = 0
  • cotx( cosx - 1) = 0

1. <u>cotx = 0</u>

  • x = π/2 + πn
  • In the interval [0, 2π] we have π/2 and 3π/2

2. <u>cosx = 1</u>

  • x  = 0 + 2πn
  • In the given interval we have 0 and 2π

<u>So the solution set is:</u>

  • x =  {0, π/2, 3π/2, 2π}

3 0
3 years ago
Other questions:
  • 2.1grams equals milligrams
    10·1 answer
  • A CEO leads a company of 250 employees and wants to conduct a survey.
    13·2 answers
  • Write this as a power of 2. ex ( 2^n) requires knowledge of negative exponents
    13·1 answer
  • Letters w, x, y, and z are angle measures. Lines r and s are intersected by line m. At the intersection of lines m and r, clockw
    5·2 answers
  • I really need help!!!!!!
    14·2 answers
  • What are the solutions of the quadratic equation below?
    11·1 answer
  • Write the following situation in slope intercept form - y=mx+b
    12·1 answer
  • It is a timed quiz. 50 points. 6th-grade math. Answer the question in the picture!
    9·2 answers
  • To make a cleaning solution, George mixes 3 cups of water to 4 drops of cleaner. Which table best represents the ratio of the cl
    12·1 answer
  • A triangle has side lengths of 7 inches, 12 inches, and c inches. Enter values to write an inequality that describes the possibl
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!