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
Vanyuwa [196]
3 years ago
8

Find the area of the shaded region:

Mathematics
2 answers:
koban [17]3 years ago
6 0

Find the area of the circle:

Area = PI x r^2

Area = 3.14 x 9^2

Area = 3.14 x 81

Area = 254.34 square cm

Now multiply the area of the circle by the shaded portion which is the fraction of the degree over 360 degrees:

254.34 x 80/360 = 20,347.2/360 = 56.52

The shaded area is 56.52 square cm.

Dmitriy789 [7]3 years ago
3 0

Area of circle formula: A = πr²

A = π(9)²

A = 81π

A = 254.34cm²

The ratio of degrees in the shaded region to total degrees in a circle:

80/360 = 40/180 = 20/90 = 10/45 = 2/9

Multiply:

254.34/1 * 2/9

508.68/9

56.52

Therefore, the area of the shaded region is 56.52cm²

Best of Luck!

You might be interested in
Need help on this too​
Alexxandr [17]
The answer is B
Deductive reasoning
8 0
3 years ago
Compare the decimals 7,231.60 and 7,231.6. Which comparison is correct? A. 7,231.60 < 7,231.6 B. 7,231.60 = 7,231.6 C. 7,231.
Ilia_Sergeevich [38]
B. 7,231.60 = 7,231.6
3 0
3 years ago
Read 2 more answers
ASAP WILL MARK BRAINLYEST TO FIRST PERSON WHO ANSWERS!!!
Flura [38]
15x + 7y + 45x + 22y
= 60x + 29y

answer
A.  60x + 29y
6 0
3 years ago
Find the vertex of y=-x^2+6x-12
Debora [2.8K]
You find the x coordinates using x = -b/2a  = -6/2(-1) = 3

Substitute 3 in the equation and find y

y = -(3^2) + 6(3) - 12 = -9 + 18 - 12 = -3

Vertex (3,-3)
8 0
3 years ago
2. Solve the system of equations. Write your answer in parametric vector notation. X, +5x2 + 4x3 + 3x4 +9xs = 18 2x, +6x2 + 4x3
ratelena [41]

Answer:

The system is inconsistent.

Step-by-step explanation:

The system is

x_1+5x_2+4x_3+3x_4+9x_5=18\\2x_1+6x_2+4x_3+6x_4+6x_5=28\\3x_1+7x_2+4x_3+10x_4+x_5=41\\4x_1+6x_2+2x_3+7x_4+4x_5=29

The associated matrix to the system is

\left[\begin{array}{cccccc}1&5&4&3&9&18\\2&6&4&6&6&28\\3&7&4&10&1&41\\4&6&2&7&4&29\end{array}\right]

Now we use row operations to find the echelon form of the matrix:

1. We substract to row 2, two times the row 1.

We substract to row 3, three times the row 1.

We substract to row 4, four times the row 1 and obtain the matrix

\left[\begin{array}{cccccc}1&5&4&3&9&18\\0&-4&-4&0&-12&-8\\0&-8&-8&1&-26&-13\\0&-14&-14&-5&-32&-43\end{array}\right]

2. We multiply the second row of the preview step by -1/4. We obtain the matrix

\left[\begin{array}{cccccc}1&5&4&3&9&18\\0&1&1&0&3&2\\0&-8&-8&1&-26&-13\\0&-14&-14&-5&-32&-43\end{array}\right]

3.

We add to row 3, eight times the row 2.

We add to row 4, fourtheen times the row 2 and obtain the matrix

\left[\begin{array}{cccccc}1&5&4&3&9&18\\0&1&1&0&3&2\\0&0&0&1&-2&3\\0&0&0&-5&10&-155\end{array}\right]

4. We add to row 4 of the preview step, five times the row 3 and obtain the matrix

\left[\begin{array}{cccccc}1&5&4&3&9&18\\0&1&1&0&3&2\\0&0&0&1&-2&3\\0&0&0&0&0&-140\end{array}\right]

Using backward substitution we have that

0x_5=-140, then 0=-140 and this is absurd. Then The system is inconsistent.

4 0
4 years ago
Other questions:
  • Hello please help on number 3
    10·1 answer
  • Write an equation of a line in slope-intercept form given slope= 6 and passes through the point (-3,7).
    10·1 answer
  • A bus can hold 40 passengers. How many buses will be needed for 170 passengers?
    5·2 answers
  • On a menu, each item from column A costs $2.25, each item from column B costs $4.50, and each item from column C costs $5.25.
    8·2 answers
  • A standard paper clip is 1 1/4
    15·2 answers
  • Which of the following mathematical operations can be used with functions? Select all that apply.
    13·1 answer
  • How do arithmetic sequences and series differ?
    15·2 answers
  • The triangular prisms shown below are<br> similor. Whet are the values of x and y?
    15·1 answer
  • A windshield wiper is 50 cm long. In one sweep it turns through an angle of 115°. Calculate the distance (length) it covers in o
    10·1 answer
  • Cost of Bikes ($) at Bike Shop
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!