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
beks73 [17]
3 years ago
5

The sum of the areas of two circles is 80 pi square meters find the length of the radius of a radius of each circle if one of th

em is twice the orher
Mathematics
1 answer:
Leno4ka [110]3 years ago
3 0
Let x=small circle
2x = bigger circle

πx^2 + π(2x)^2 = 80π
x^2 + 4x^2 = 80
5x^2 = 80
x^2 = 16
x = +/- 4
but we need the positive one because there's no negative measurement so
the answers are:
4m and 8m
You might be interested in
Given Δ XYZ ≅ Δ EGF, find the measurements of the unknown sides and angles.
mamaluj [8]
The two triangles are similar and equal therefore; It means the corresponding sides are equal and the corresponding angles are equal. Hence;
 ZX=EF, thus,ZX = 1.3 in. 
EG = XY, thus, EG = 3.0 in.
m∠ X = m∠E, thus m ∠X = 48°
m∠ G = m∠Y, and angles in a triangle add up to 180 thus;
  m ∠ G=180- (107 +48) = 25°

6 0
3 years ago
Read 2 more answers
Rent-A-Swag has a 9% late fee each day your rentals are overdue. What is the fee for a $39 rental that is 13 days late?
kirill [66]

Answer:

3.51 for 1 day 45.63 for 13 days u could also look up what's 9% of 39 then just times it by 13

7 0
3 years ago
Read 2 more answers
The volume of a rectangular prism is 948.6 m3. The prism has a base that is 3.1 m by 5.1 m. Find the height of the prism.
saveliy_v [14]
Just divide 948.6 m^3 by 3.1 m and 5.1 m to get 60 m
6 0
3 years ago
What is the perimeter of rectangle with vertices located at (- 3, - 1), (5, - 1), (5, 9) and (- 3, 9) on the coordinate ?
xxMikexx [17]

Answer:

32 units^2

Step-by-step explanation:

Finding the width and the length:

One side = √[(-1 - (-1)^2 + (5 - (-3))^2]

= √(0 +  64)

= 8.

The adjacent side = √(9-9)^2 + (-3-5)^2

= 8.

Perimeter - 4 *8 = 32 units^2.

3 0
3 years ago
A 56 yard loss in football game
o-na [289]
56 yard loss is -56yds
4 0
3 years ago
Other questions:
  • A.
    9·1 answer
  • What do you think could reduce the difference? That's the question...Please help me I've been stuck here for hours!
    9·1 answer
  • Solve a=9y+3xy for y
    11·1 answer
  • Triangle NOP is similar to triangle QRS. Find the measure of side RS. Round your answer to the nearest tenth.
    8·1 answer
  •  help please with these 2 !!!! i’ll give brainliest !
    12·2 answers
  • PLEASE HELP IT'S DUE IN 15 MINUTES!! WILL GIVE BRAINLIEST!!!!
    7·1 answer
  • 9.36 as an improper fraction
    6·2 answers
  • . How many lines of symmetry does the letter “B” have? (remember: a line of symmetry divides something up into mirror images)
    6·2 answers
  • A line passes through the point (1, 5) and has a slope of -9.​
    10·1 answer
  • What is 9/16 x 2/3 (show ur work) thanks
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!