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
notsponge [240]
3 years ago
7

The circumference of a roll of party streamers is 9 inches. The circumference decreases by 2 inches after you use the streamers

to decorate for a graduation party. Find the diameter of the roll after the decrease. Round your answer to the nearest hundredth.
Mathematics
1 answer:
leonid [27]3 years ago
7 0
For that case the new circumference is:
 C = 9 - 2
 C = 7 inches
 By definition, the circumference is:
 C = 2 * pi * r
 Where,
 r: radio
 Substituting values:
 7 = 2 * pi * r
 Clearing the radio:
 r = 7 / (2 * pi)
 Then, the diameter is:
 d = 2 * r
 Substituting:
 d = 2 * (7 / (2 * pi))
 d = 2.228169203
 Round to the hundredth:
 d = 2.23 inches
 Answer:
 
The diameter of the roll after the decrease is:
 
d = 2.23 inches
You might be interested in
How do I find angles a, b, and c?
LenaWriter [7]
For angle A, you need to do 180-130 which is 50
for angle B, you need to do 180- 90 - 50 which is 40
for angle C, you need to do 180 - 60 - 40 which is 80

If you want me to explain you with further details with how exactly I got those answers and how I knew what to do, then ask me. 
6 0
3 years ago
Read 2 more answers
The length of a rectangle in centimeters is two more than thrice its width. a) Write an expression, in the simplest form, for th
Karo-lina-s [1.5K]

Answer:

Perimeter of the rectangle = 8 x +4

Length of the rectangle = 12 units.

Step-by-step explanation:

Let the width of the rectangle as 'x' units.

So, length of the rectangle is 2 more than 3 x.

We can set up expression for length as 3 x+2.

Now, perimeter is sum of all side lengths of the rectangle.

So, perimeter = x+x+3 x+2 +3 x+2

Combine like terms,

Perimeter = 8 x+4

Now, it is given perimeter is 36cm

So,

8 x+4=36

Subtract both sides 4

8 x=32

Divide both sides by 8

x=4

So, width of the rectangle =4

Length =3(4) +2=14

3 0
3 years ago
325 students and 36 students are going to college. What’s that percentage?
aleksklad [387]

Answer: 11% of students go to college

Step-by-step explanation: So simply take 36/325 since only 36 are going to college, divide and you get roughly 11%

5 0
3 years ago
21) Jim and his uncle went to the circus. Together they spent
SCORPION-xisa [38]
3/30 or 1/10 or $3
There all the same answer just different ways
The first one is unsimplified The second one is simplified The last one is in money form
3 0
3 years ago
Average speed is calculated by dividing total distance with the time it takes to complete it. True False
Aliun [14]

Answer:True

Step-by-step explanation:

Average speed refers to the total distance covered in a specific time . it also a scalar quantity (has magnitude but no direction)

Average speed=distance / time

-Speed is in kilometers/hours or meter/seconds

-distance is in kilometers or meters

-time is in hours or seconds

4 0
4 years ago
Other questions:
  • 5(3+t)-3(t+1) I don't understand how to do this problem.
    13·1 answer
  • How much dirt is there in a hole 3 feet deep, 6 ft long and 4 ft wide?
    10·2 answers
  • 67.82 miles per hour to feet per second
    6·1 answer
  • Need help asap, multiple choice
    10·1 answer
  • How does f(4) if f(x) = 2x work? how do i work this out?
    14·1 answer
  • I WILL GIVE BRANLIEST!!! 56yx^3-32yx+16y<br><br> please help very quickly.
    8·1 answer
  • -8.5n = 17<br> pls help me
    13·1 answer
  • Help me please 20 points and brainliest
    9·1 answer
  • Find the distance between Line L and Point P if Line L contains the points
    5·1 answer
  • The term magnet describes any material that attracts
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!