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
Elden [556K]
3 years ago
7

15 POINTS- ITS DUE TONIGHT

Mathematics
2 answers:
Alex3 years ago
8 0
Ok this isn’t my answer i found it on quora but it answers ur question u have

We can write a system to solve this problem

Let x= the radius of Circle A

Let y=the diameter of Circle B

x=2y-3

2x+y=49

since we are trying to find the area and the circumference of circle A, we only have to find what x is

x=2y-3 → y=1/2x+3/2

next, we plug in 1/2x+3/2 for y:

2x+1/2x+3/2=49

we can then multiply all the numbers by 2 to get rid of the fractions:

4x+x+3=98

5x+3=98

5x=95

x=19

Circle A radius=19ft

Finally, we solve for the area and circumference:

Area:

A=pi*r^2

A=3.14*19^2

A=1133.54 feet^2

Circumference:

C=2*pi*r

C=2*3.14*19

C=119.32 feet
NeX [460]3 years ago
7 0

Step-by-step explanation:

r=2x-3\\\\d=4x-6\\\\dA+dB=49\\\\\4x-6+x=49\\\\5x=49+6\\\\ \frac{5x}{5} =\frac{55}{5} \\\\x=11\\\\

radius of OA

⇒2 (11) -3\\\\

⇒22-3

⇒19

C=2\pir

= 2\pi(19)

<u>C=38</u>\pi<u> ft</u>

Area=\pi²

⇒\pi (19)^{2}

Area=36=361 ft²

<u>hope this helps </u>

<u />

You might be interested in
What is 80% more than 20.00
AlekseyPX
Answer is 36.
20 * 80/100 = 16
20+16=36
5 0
3 years ago
Read 2 more answers
(x+1)(x+8)=<br><br><br> can somebody help me on this
goblinko [34]
X^2+8x+x+8 simplifies to x^2+9x+8
8 0
3 years ago
Find the volume of this rectangular pyramid.
Ivahew [28]
Volume is just length x width x height. 5 x 6 x 7 is 210. 210cm
3 0
2 years ago
Please help<br><br> Combine like terms.<br> 9y + 5y - 3 = [? ]y + [ ]
almond37 [142]

Answer:

= 14y + ( – 3 )

I hope I helped you^_^

7 0
2 years ago
Which statement best describes the area of Triangle ABC shown below?
KatRina [158]

Answer:

Would be the 3rd one I believe

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Is 0.3/0.9 rational or irrational
    9·2 answers
  • Using the change of base formula, evaluate log312 (round to the nearest hundredth).
    15·1 answer
  • What is the product of 4/5×2/3? Draw a model to support your answer. Explain how the model shows the product.
    8·1 answer
  • What is the approximate volume of the small truck? length 11 1/3 ,width 7 5/12 ,height 6 3/4?
    8·1 answer
  • Find the explicit formula for an arithmetic sequence with a common
    10·1 answer
  • What is the solution set of y = x2 + 2x + 7 and y = x + 7? A. {(0, 7), (-1, 6)} B. {(0, 7), (-7, 0)} C. {(0, 7), (1, 8)} D. {(-2
    8·1 answer
  • HELP!! 25 POINTS!! don’t mind this sentence ansjjsjsjsjdjejejejekekekekekdjd
    11·1 answer
  • The simple interest charged on a 12-month loan of $82,000 is $631. Find the simple interest rate. (Round your answer to one deci
    10·1 answer
  • the temperature in london is -5 at midnight at midday the temperature is 10c how much did the tempeture increase by?
    15·1 answer
  • Do all these angles equal 360 degrees?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!