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
velikii [3]
3 years ago
9

Here are the diameters of four coins: penny (1.9 cm), nickel(2.1cm), dime (1.8cm), quarter (2.4cm). A coin rolled about 33 cm in

5 rotations. Which coin is it? Use 3.14 for pi
Mathematics
1 answer:
Serhud [2]3 years ago
5 0

Answer: Nickel

Step-by-step explanation:

Hi, to answer this we have to calculate the circumference of each coin:

C =π diameter.

Penny = 3.14 (1.9)= =5.96 cm

Nickel = 3.14 (2.1) =6.6 cm

Dime = 3.14 (1.8) =5.62 cm

Quarter = 3.14 (2.4) =7.53 cm

Since the coin rolled about 33cm in 5 rotations, it means that the circumference of the coin (x) multiplied by 5 is equal to the distance rolled.

5x=33

x =33/5 =6.6 cm

The coin is the nickel, because its circumference is equal to 6.6 cm.

You might be interested in
Helppp algebra!!!!!!!20 points!!!!!!!
gladu [14]

Answer:

B

Step-by-step explanation:

it's more like 10 points

4 0
3 years ago
Read 2 more answers
Please answer this question for me
makkiz [27]
I think the answer is par
4 0
3 years ago
Find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -6 and 162, respectively. Pl
kicyunya [14]
Hello,

u_{0} =a\\
 u_{1} =a*r\\
 u_{2} =a*r^{2}=-6\\
 u_{3} =a*r^{3}\\
 u_{4} =a*r^{4}\\
 u_{5} =a*r^{5}=162\\
....\\
\boxed{ u_{n} =a*r^{n}} \\

\dfrac{ 162}{-6} = \dfrac{ u_{5} }{ u_{3}} = \dfrac{ a*r^{5}}{ a*r^{2}} =r^3= -27\\
==\ \textgreater \  r=-3\\

 u_{2} =a*r^{2}=-6=a*(-3)^2 \ ==\ \textgreater \  a=-\frac{6}{9} =-\frac{2}{3}\\


\boxed{ u_{n} =-\frac{2}{3}*(-3)^{n}=(-1)^{n+1}*2*3^{n-1}} \\


8 0
3 years ago
Read 2 more answers
Factor the given polynomial completely.<br><br> a²-4a-32
zhuklara [117]

Answer:

(x + 4)(x - 8).

Step-by-step explanation:

a²-4a-32

We need 2 numbers whose product is -32 and whose sum is -4.

They are +4 and -8, so the factors are:

(x + 4)(x - 8).

7 0
1 year ago
Read 2 more answers
2x+5y=24<br> -6x-15y=10<br> solve for elimination
Burka [1]
Your answer is no solution. I'm in middle school and learning the same thing.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the line of symmetry for the parabola whose equation is y = x2 - 12x + 7?
    9·1 answer
  • What is 3x-9-5x=-7 if you solve for x
    14·1 answer
  • Find the next term of the following sequence.
    6·2 answers
  • Graph each function y=3x2-7
    14·1 answer
  • Question 5<br> 60% of 50<br><br> Question 6<br> 25% of 16
    7·1 answer
  • SH
    10·2 answers
  • A Fifty dog owners and 50 people who do not own dogs are each given a test to evaluate their stress levels. Dog owners are found
    5·1 answer
  • Which polynomial function has zeros at -3, 0, and 4?
    10·1 answer
  • 2a+3b=5<br> b=a-5 help please
    10·2 answers
  • Guillermo bought some reams of paper for $10 each and a $100 printer. He spent a total of $450. Write and solve an equation to f
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!