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
uysha [10]
3 years ago
12

Two circles have areas of 16π and 25π. Find the ratio of their circumferences.

Mathematics
1 answer:
adelina 88 [10]3 years ago
5 0

Answer:

4:5

Step-by-step explanation:

A=πr^{2}

16π =πr^{2}

r^2 = 16 & r^2 = 25

You might be interested in
Simplify the expression using trigonometric identities: sec (–θ) – cos θ.
ololo11 [35]

Answer:

sin θ . tan θ

Step-by-step explanation:

Note : -

sec ( - θ ) = sec θ

Formula / Identity : -

sec θ = 1 / cos θ

sec ( - θ ) - cos θ

= [ 1 / cos θ ] - cos θ

{ LCM = cos θ }

= [ 1 / cos θ ] - [ cos²θ / cos θ ]

= [ 1 - cos²θ ] / cos θ

{ 1 - cos²θ = sin²θ }

= sin²θ / cos θ

{ sin²θ = sin θ . sin θ }

= sin θ . sin θ / cos θ

{ sin θ / cos θ = tan θ }

= sin θ . tan θ

Hence, simplified.

4 0
2 years ago
Please help in finding x.
inna [77]

Answer:

x=20

Step-by-step explanation:

Square both sides

4+x/6=4

4+x=4*6

x=24-4

x=20

5 0
3 years ago
Read 2 more answers
What is five fourths of a right angle
MrRa [10]
A right angles is 90 degrees
if you mean 5/4 of the MEASURE of a right angle then
90 times 5/4 (because in math 'of' means multiply)
90 tmes 5/4=450/4=225/2=112.5 degrees
7 0
3 years ago
Read 2 more answers
Barry and Robin walk to Dunkin' Donuts each Saturday to meet for coffee and donuts. Barry walks the 2 miles from his house in 30
lbvjy [14]

Answer:

Barry travels 4mph. Robin travels 5mph. Therefore Robin is walking faster.

Step-by-step explanation:

2x2=4

36/60=0.6

0.2=1

0.2x5=1

1x5=5

6 0
2 years ago
The answer is not as follows about this PI PROBLEM:
Tema [17]

Answer:19.625

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • 12=a+5b solve for a. I think the answer is 12-5b=a but that's probably wrong
    14·1 answer
  • Elise took all of her cans and bottles from home to the recycling plant. The number of cans was one more than four times the num
    9·1 answer
  • Rosario works for a small medical practice. Only three employees work in the office, so Rosario is often asked to take on additi
    11·2 answers
  • In a probability experiment, Eric flipped a coin 39 times. The coin landed on heads 26 times. What is the ratio of heads to tail
    10·1 answer
  • A grocery store steak sells $6.00 per pound. What would be the cost of 2.6 pounds of steak?
    15·1 answer
  • A recipe for pizza dough calls for 3 teaspoons of salt for every 4 cups of flour how many teaspoons of salt will be needed for 2
    7·1 answer
  • A 2013 study by pediatrician investigates whether it in better to give children the diphtheria, tetanus and pertussis (DTaP) vac
    11·2 answers
  • Is anyone bored, and just wants to play some imessage games?<br>solve for x: x2 + 9x + 14 = 0
    7·1 answer
  • What is the antecedent for the pronoun "they" in the following passage?
    12·2 answers
  • Some cones are mathematically similar. Two of the cones have radii in the ratio 2:3. Write down the ratio of their masses.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!