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
mylen [45]
3 years ago
15

Find the area of a 7-gon with side length 10. Round to a whole number.

Mathematics
1 answer:
Alja [10]3 years ago
7 0
Answer:
n = 7
a = 10 m
r = 10.3826 m
R = 11.5238 m
A = 363.391 m2
P = 70 m
x = 128.571 °
y = 51.4286 °
You might be interested in
10 POINTS (PLEASE PLEASE I BEG YOU HELP ME)
yulyashka [42]

Answer:

give me points an d i will give u points

Step-by-step explanation: yufikdx

8 0
3 years ago
Read 2 more answers
Using the remainder theorem which quotient has a remainder of 20?
stealth61 [152]

Answer:

D

Step-by-step explanation:

When a polynomial f(x) is divided by (x - a) then remainder is f(a)

A

divided by (x + 4 ), then a = - 4

(-4)^{4} - 8(- 4)² + 16 = 256 - 128 + 16 = 144 ≠ 20

B

divided by (x - 2), then a = 2

3(2)³ + 7(2)² + 5(2) + 2

= 3(8) + 7(4) + 10 + 2

= 24 + 28 + 12 = = 64 ≠ 20

C

divided by (x + 5) , then a = - 5

(- 5)³ + 5(- 5)² - 4(- 5) + 6

= - 125 + 125 + 20 + 6 = 26 ≠ 20

D

divided by (x - 2), then a = 2

3(2)^{4} - 5(2)³ + 5(2) + 2

= 3(16) - 5(8) + 10 + 2

= 48 - 40 + 12 = 20 ← Remainder of 20

3 0
2 years ago
Solve this quadratic equation by completing the square.
erastova [34]

Answer:

C

Step-by-step explanation:

x² + 6x = 18

To complete the square, take the coefficient of the x term, halve it, square the result, then add to both sides.

(6/2)² = 3² = 9

x² + 6x + 9 = 18 + 9

(x + 3)² = 27

x + 3 = ±√27

x = -3 ± √27

5 0
2 years ago
The radius of a circle is 2.9 in. Find the circumference to the nearest tenth.
ELEN [110]

Answer:

\bf \large 20 \: inches

Step-by-step explanation:

<h2>Given that :</h2>

  • The radius of a circle is 2.9 in.

<h2>to find :</h2>

  • Find the circumference to the nearest tenth.

<h2>formulas used :</h2>

  • circumference = 2 × π × r

where,

  • π = 22/7
  • r = 2•9 inches

<h2>explanation :</h2>

⟼ c = 2πr

⟼ c = 2 × 22/7 × 2•9 inches

⟼ c = 2 × 3•14 × 2•9 inches

⟼ c = 6•28 × 2•9 inches

⟼ c = 18•21 inches.

<h2>Round to the nearest tenth :</h2>

⟼ c = 18•21 inches

⟼ c = 20 inches

∴ circle circumference is 20 inches .

3 0
3 years ago
A circle has a circumference of 25.12 inches what is the diameter of the circle
BigorU [14]

Answer:

8

Step-by-step explanation:

Recall these two equations for circumference and diameter.

Circumference = 2*pi*radius

Diameter = radius*2

25.12 = 2*pi*radius

Radius = 4

Diameter = 4*2 => 8

Thus the diameter is 8

4 0
3 years ago
Other questions:
  • I need a answer please
    11·1 answer
  • Determine whether the function is a linear transformation. T: P2 → P2, T(a0 + a1x + a2x2) = (a0 + a1 + a2) + (a1 + a2)x + a2x2.
    13·1 answer
  • In how many different ways can you answer a multiple choice test that has 5 questions and 3 choices for each answer?
    5·2 answers
  • What is the order of rotational symmetry for a mombus?<br> 0<br> 1
    7·1 answer
  • What is the GCF of these 2 numbers : 120 and 60
    7·2 answers
  • 2x(x+4)+7+=(x+8)+ 2x(x+1)+12=
    11·1 answer
  • Long time since doing math forgot how to add factions 1/3 + 1/4
    5·2 answers
  • What is the solution to the equation fraction 1 over 6 x = 2? A. x = fraction 1 over 12 B. x = fraction 1 over 3 C. x = 3 D. x =
    9·1 answer
  • Whats the length of the wire
    14·1 answer
  • I number line from -5 to 5 with the plot of -3 and so on i dont want links
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!