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
kumpel [21]
3 years ago
11

Please!! I have to do this by tonight!!

Mathematics
1 answer:
Aneli [31]3 years ago
4 0

Answer:

Prob.3

Denote r: radius of circle O

Formula for calculating AOB sector:

Area = pi*r^2*angle/360

Area = pi*r^2*45/360 = 18 pi

=> r^2 = 18*360/45 = 144

=> r = 12

For prob.4, give it a try, follow the formula I gave. Good luck !

(answer : r = 6)

You might be interested in
Change 2/7% to a ratio
andre [41]
(2/7)% = 

<span>(2 / 7) / 100 = </span>

<span>2 / 700 </span>

<span>2 : 698 </span>

<span>1 : 349</span>
7 0
3 years ago
URGENT!!<br> The difference between the roots of the quadratic equation x2−12x+q=0 is 2. Find q
Tasya [4]

Answer:

-24

Step-by-step explanation:

substitute by 2

2²-12×2+q=0

q=-24

8 0
3 years ago
Which of the following is a way that scientific advancements have benefited society? a. increased energy efficiency b. increased
PilotLPTM [1.2K]

The answer is a. increase energy efficiency.  This means that we now use less energy to do more thanks to many advances in technology.  It could also be due to the use of alternative sources of power such as the sun or win.  These new sources provide energy without causing pollution.

tbh google

7 0
3 years ago
What is 560 miles in 7 hours ?
Natali [406]

Answer:

It would be 80 miles in 1 hour

Step-by-step explanation:

You divide 560/7  

7 goes into 56, 8 times and into 0, 0 times.

560/7=80

8 0
3 years ago
What is the value of the expression 2 + 32 ⋅ (5 − 1)? 31 32 37 38
zvonat [6]

Answer:

38

Step-by-step explanation:

Pemdas

P = Parentheses

E = Exponents

M = Multiplication

D = Division

A =  Addition

S = Subtraction

5 0
3 years ago
Other questions:
  • Consider Akelia’s sequence 5, 8, 11, 14, 17, ….
    9·1 answer
  • What's The slope intercept form of: x - y = 7
    12·1 answer
  • Factorize using middle term:<br> m²+3m+2
    15·1 answer
  • What is the square root of 24 ​
    8·2 answers
  • Will give the brainliest answer,
    5·2 answers
  • You walk into a tall building and take the elevator up an appointment you have on the 7th floor they send you down two floors to
    15·1 answer
  • Meghan needs to board her cats and dogs at a kennel while she's on vacation. Pet Hotel charges $42.50 for a cat and $64.00 for a
    10·2 answers
  • Find 25.1 ft in the radius circle
    5·1 answer
  • Please answer both questions, thanks!
    10·2 answers
  • Given f(x)=5x-3, find f(-3)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!