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
Leni [432]
2 years ago
8

Find the area of the region shaded in green. Use 3.14 to approximate pi.

Mathematics
1 answer:
8090 [49]2 years ago
3 0

Answer:

254 cm² (to 3 s.f.)

Step-by-step explanation:

Area of shaded region

= area of large circle -area of smaller circle

\boxed{area \: of \: circle = \pi {r}^{2} }

Radius of large circle= 15cm

Radius of smaller circle= 12cm

Area of shaded region

= π(15²) -π(12²)

= 225π -144π

= 81π

= 81(3.14)

= 254.34

= 254 cm² (3 s.f.)

You might be interested in
Solve the Quadratic Equation.
vichka [17]

Answer:

x = ± 2i

Step-by-step explanation:

The equation has no real roots, gut has complex roots

Given

x² = - 4 ( take the square root of both sides )

x = ± \sqrt{-4}

  = ± \sqrt{4(-1)}

[ Note that \sqrt{-1} = i ]

  = ± \sqrt{4} × \sqrt{-1} = ± 2i

7 0
3 years ago
Solve the system of equations. -5x+2y=9. y=7x
il63 [147K]

- 5x + 2y = 9 \\ y = 7x \\  \\  - 5x + 2 \times 7x = 9 \\  - 5x + 14x = 9 \\ 9x = 9 \\ x = 1 \\  \\ y = 7 \times 1 = 7 \\

Answer: (1; 7)

7 0
2 years ago
Which expression does not factor?<br><br> m3 + 1<br> m3 – 1<br><br> m2 + 1<br><br> m2 – 1
Luda [366]

Answer:

m^2 +1

Explanation:

All the other expressions can be factorized. Let's see why:

1) m^3 +1

This is the sum of the cubes, and this can be factorized as follows:

a^3+b^3=(a+b)(a^2-ab+b^2)

In this case, a=m and b=1, so we can factorize as

m^3+1=(m+1)(m^2-m+1)

2) m^3-1

This is the difference between two cubes, and this can be factorized as follows:

a^3-b^3=(a-b)(a^2+ab+b^2)

In this case, a=m and b=1, so we can factorize as

m^3-1=(m-1)(m^2+m+1)

3) m^2-1

This is the difference between two square numbers, and it can be factorized as follows

(a^2-b^2)=(a+b)(a-b)

In this case, a=m and b=1, so we can factorize as

m^2-1=(m+1)(m-1)

4 0
3 years ago
Read 2 more answers
Hi, can someone help with my geometry homework?
hammer [34]
The answer is letter C.
8 0
3 years ago
Can someone please give me the (Answers) to this? ... please ...<br><br> I need help….
Blizzard [7]

Step-by-step explanation:

hope it's helpful please let me know

6 0
2 years ago
Other questions:
  • Which expressions simplifies to a negative number? (-1) three times , (-1) two times, (-1) four times, or (-1) five times??​
    12·2 answers
  • Jake and Hannah wash windows Jake charges $50 plus $2 per window hannah charges $20 plus $5 per window for how many windows wash
    12·1 answer
  • Kurt is taking a roadtrip and has of his total distance left to travel. He plans to travel the remaining distance in 5 hours. Wh
    13·2 answers
  • Number one. Find the measure of ef. It will be in degrees. Correct answer will get brainliest.
    6·1 answer
  • What is the area of the trapezoid?<br> 6 feet<br> 8 feet<br> 10 feet
    13·2 answers
  • a bundle of shingles is 12 inches high, if a shingle is 1/4 inch thick, how many shingles are in the bundle?
    8·1 answer
  • Solve the equation for the given variable <br> x + y = z ;x
    10·1 answer
  • Please help, i need to raise my grade
    11·1 answer
  • I NEED HELP PLEASE :( I DONT UNDERSTAND! LINKS WILL BE REPORTED
    15·2 answers
  • Point M is located at (-2,7). If point N is 10 units away from point M, how many possible cordinate pairs
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!