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
Allisa [31]
3 years ago
15

(45/360)2πr=9π/4

Mathematics
1 answer:
Lyrx [107]3 years ago
7 0

Answer:

r=9

Step-by-step explanation:

45/360=1/8

1/8*2=2/8

2/8=1/4

1/4*pi*r=(9pi)/4

Divide both sides by 1/4 (the fours cancel each other out)

Pi*r=9*pi

Pi cancels each other out

R=9

Hope this helps

You might be interested in
Let v = 3i + 2j and w = 2i + 3j. Sketch v, w, v + w, 2w, and v − w in the plane
Nimfa-mama [501]

Answer:

Step-by-step explanation:

In the argand plane for plotting points of complex numbers we take i coefficient as x and j coefficient as y and plot as we plot regular points on the graph.

v=3i+2j

Point is (3,2) A

w =2i+3j , Point is (2,3) B

v+w = 5i +5j Point is (5,5) C

2w = 4i+6j , point is (4,6)

v-w = i-j Point (1,-1)

Please find enclosed the above points plotted on the graph.

5 0
3 years ago
How many three-digit positive integers <img src="https://tex.z-dn.net/?f=x" id="TexFormula1" title="x" alt="x" align="absmiddle"
Anastaziya [24]

Answer:

  40

Step-by-step explanation:

Any solution x will mod 23 will also have x+23n as a solution, for some integer n. Since 900/23 = 39 3/23, we know there are 39 or 40 three-digit integers of this form.

As it happens, 100 is the smallest 3-digit solution. So, there are 40 three-digit numbers that are of the form 100 +23n, hence 40 solutions to the equation.

_____

The equation reduces, mod 23, to ...

  10x = 11

Its solutions are x = 23n +8.

3 0
3 years ago
What is the solution of the system? Use the elimination method. 2x+y=206x−5y=12 . Enter your answer in the boxes.
worty [1.4K]
2x+y=206x-5y=12
y+204x-5y=12
6y=204x=12
8 0
3 years ago
Read 2 more answers
Tod begins piano practice at 4:15 p.M. And ends at 5:50 p.M. How long does he practice
nikdorinn [45]

Answer:

95 minutes/1 hour and 35 minutes.

Step-by-step explanation:

Since there are 60 minutes in a hour you could convert it. Or you could just subtract 550 minutes by 415 minutes and get 95 minutes which is also 1 hour and 35 minutes.

Hope this helps

:)

5 0
3 years ago
Solve for x in the equation 3 x squared minus 18 x + 5 = 47.
ryzh [129]

Answer:

x= 3 +\sqrt{23}, 3 -\sqrt{23}

Step-by-step explanation:

You use the quadratic formula to get x= \frac{18+6\sqrt{23} }{6} ,\frac{18-6\sqrt{23} }{6}

Then you simplify and get the answers x= 3 +\sqrt{23}, 3 -\sqrt{23}

​​  

​​  

6 0
3 years ago
Read 2 more answers
Other questions:
  • The expression 3x^2-33x-180 can be factored into the form a(x+b)(x+c) where a, b, and c are constants, to reveal the zeros of th
    13·1 answer
  • Is Math 1 the same thing as Algebra 1?
    6·1 answer
  • The ratio of the prices of Emma's phone to Sophie's phone is 7:8. If Sophie's phone costs $640, how much should the prices of th
    8·1 answer
  • I need help ASAP. Thank you (:
    14·1 answer
  • If the sum of the interior angle measures of a polygon is 3600°, how many sides does the polygon have? A. 22 sides B. 20 sides C
    5·1 answer
  • 4/7=24/a proportion
    13·2 answers
  • A bag contains two coins, one for which the probability of heads is equal to 1 and one for which the probability of heads is equ
    12·1 answer
  • PLEASE HELP! I ONLY NEED TO DO 3 MORE ASSIGMENTS AND I'M STUCKKK!
    13·2 answers
  • Simplify the expression using the distributive property.<br><br><br><br> 6(3x + 4y)
    13·2 answers
  • Please confirm that this awnser is right please only awnser if you are 100% sure it’s right ( I will brainlist)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!