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
balandron [24]
3 years ago
13

4) The area of a piece of pie in the shape of a sector is 7.1 in. The angle of the sector is 40°. Find the diameter of

Mathematics
1 answer:
elixir [45]3 years ago
4 0

Answer:

Step-by-step explanation:

Area of sector = angle/360 * pi * r^2

7.1 = 40/360 * 22/7 * r^2

7.1 = 1/9 * 22/7 * r^2

63.9 = 22r^2/7

r^2 = (7 * 63.9)/22

r^2 = 20.331818181818

r = square root of 20.331818181818

r = 4.51

d = r * 2 = 4.51 * 2 = 9.02

You might be interested in
You guys are life savers but does anyone know the answers to these questions? I’m so confused rn
timofeeve [1]

Answer:

The third choice

Step-by-step explanation:

We need to find the slope and y-intercept of the line and then put it into y = mx = b form. To find the slope, pick a point on the line; I will use (-2, 5); count how many units up you need to go to get to the next point on the line, which in this case it would be 3. The count how many to the right or left you would need to go, which is 1 to the left. Moving left means a negative, so it is -1. Your slope fraction would be \frac{3}{-1} , since slope is rise over run. You can sub this fraction in for m in y = mx + b, which will give you a revised equation of y = -3x = b. To find the y intercept, or b, just find the point where the line crosses the y-axis, which is -1. So, the equation is now y = -3x - 1.The correct answer is third choice.

6 0
3 years ago
Triangle ABC has vertices A (1,1), B (3,2) and C (0,-2), It is dilated by a scale factor of 1/2 about the origin to create trian
Ghella [55]

Answer:

The length is 2.5 units

Step-by-step explanation:

Before we find the value of the length of the side, we need the measure of the coordinates after dilation

B’ = 1/2 B = 1/2(3,2) = (1.5, 1)

C’ = 1/2 C = 1/2( 0,-2) = (0,-1)

The measure of the length is the distance between the two points

Mathematically, that would be;

D = √(x2-x1)^2 + (y2-y1)^2

D = √(0-1.5)^2 + (-1-1)^2

D = √(2.25 + 4)

D = √6.25

D = 2.5 units

8 0
2 years ago
QUICK MATH EVERY DAY ON THE.....................................................................................................
r-ruslan [8.4K]

Answer:

noo why ;c *cries in deep suffer and pain*

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The set of types of matter<br>well difined or not​
Tresset [83]

Answer:

It is not well defined.

Step-by-step explanation:

Because set is a collection of well defined objet. And matter contains of solid, liquid and gas

3 0
3 years ago
Which of the following expressions is not equivalent to -4.5 • -8?
strojnjashka [21]

Answer: (8)(-4.5)

Step-by-step explanation: If you were to multiply -4.5 • -8 it would be a positive number but if you multiply (8)(-4.5) that would equal a negative number

5 0
3 years ago
Other questions:
  • The variable Z is directly proportional to X. When X is 5, Z has the value 55.
    11·2 answers
  • What is the perimeter of a triangle with the side lengths of 2, 5, and 10x?
    9·1 answer
  • What is the answer of 7 copies of the sum of 8/5 + 4
    15·1 answer
  • Please help answer this <br><br> Thank you 20 points :)
    7·1 answer
  • Question 2
    7·2 answers
  • Which of the following equations has only one solution?
    12·2 answers
  • Max travels to see his brother's family by car. He drives 216 miles in 4 hours. What is his rate in miles per house? Use a doubl
    11·2 answers
  • Can somebody please help me with this question?
    12·2 answers
  • U
    11·1 answer
  • A water sample must be taken from water at least 20 feet deep. Find the depth of the water 50 feet from shore.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!