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
Zinaida [17]
3 years ago
5

A student solved for the radius of a circle with a circumference of 12π

Mathematics
1 answer:
padilas [110]3 years ago
3 0

Answer:

Step 4 is incorrect  he did not divide correctly from step3 to step 4

Step-by-step explanation:

The circumference of a circle is

C = 2 * pi *r

We know the circumference is 12 pi

12pi = 2 pi *r

Divide each side by 2 pi

12 pi/2pi = 2pi r/ 2pi

6 = r

From step 3 The student did not cancel the pi in the top and the bottom on the right hand side to isolate r

In step 4 he got 6 =pi r  instead of pi

You might be interested in
I need to know the of the blue line
8_murik_8 [283]

Step-by-step explanation:

if i pick (3,4) and (6,10)

the formula for gradient is difference in y divided by difference in x . therefore

10-4 divided by 6 - 3 equals to 6 divided by 3 = 2

the gradient is 2

8 0
1 year ago
Help please <3 (easy)
masya89 [10]

Answer:

42 degrees

Step-by-step explanation:

92 - 50 = x

42 degrees = x

5 0
3 years ago
Find AC.<br> Round to the nearest tenth.<br> B<br> 86°<br> 16<br> С<br> 11<br> A
Vadim26 [7]

Answer:

19.4

Step-by-step explanation:

16^2+11^2=377

then square 377 which will equal to

19.416 which can be rounded up to 19.4

6 0
2 years ago
how many restaurants have hawaiin pizza on their menu if 7.5% of the 100 restaurants served hawaiin pizza
vova2212 [387]
By my, calculations this means that there is an estimated number of restaurants that receive a Hawaiian pizza order from their menu and that is 7.5. So out of 100 restaurants, there are 7.5 Hawaiian pizza orders. 
4 0
3 years ago
Read 2 more answers
3. If Jay gets paid $30 a day plus $15 per driveway
marissa [1.9K]

Answer:

4 driveaways

Step-by-step explanation:

90 - 30 = 60

60 ÷ 15 = 4

6 0
3 years ago
Other questions:
  • What is the value of in the equation
    10·1 answer
  • How many feet long 72 inches
    8·1 answer
  • What is the value of expression 450/45+5
    5·2 answers
  • Can someone please help me draw in this grid and help find the perimeter and area of it !
    8·1 answer
  • How much to the nearest dollar should you deposit in a savings account at 2.5% annual simple interest in order to have a balance
    7·1 answer
  • Given: 5(x-1) = 3(x-4)+1 Prove: x=-3
    5·2 answers
  • What is the constant term in the expression 9xy + 6x +10?<br> Help help!!
    14·1 answer
  • A watercolor painting is 23 inches long by 11 inches wide. Ramon makes a border around the watercolor painting by making a mat t
    9·1 answer
  • A roll of 100 pennies is in the shape of a right cylinder. Each penny has a diameter of 0.75 inches and a thickness of 0.04 inch
    6·2 answers
  • 1. What is the 90th percentile if the sample size is 11?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!