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
arsen [322]
3 years ago
5

Given the figure, if ∠ABC is 20° and C is the center of the circle, what is the measure of the central angle ∠ACB? A) 40° B) 70°

C) 100° D) 140°
Mathematics
2 answers:
WINSTONCH [101]3 years ago
8 0

Answer:

140

Step-by-step explanation:

kramer3 years ago
7 0

Answer:

D) 140°

Step-by-step explanation:

The total number of degrees in a triangle is 180. Since both sides of the triangle are the radius of the circle, the triangle is isosceles. Therefore the two opposite angles are equal. Thus, the central angle is 180° − 2(20°) = 140°.

You might be interested in
What happens to the volume of a cone when the radius is doubled ?
jarptica [38.1K]
It is multiplied by to because the raidouis is double.
4 0
3 years ago
Find the multiplier that should be used and the initial value, then write and exponential equation in the form f(x)=ab to the po
astra-53 [7]
Hdhdhdhdhdbdbdjhdddd
4 0
3 years ago
Use quadratic formula solve .7x^2 - 28x - 7​
beks73 [17]

Answer:

x = 2 + sqrt(5) or x = 2 - sqrt(5)

Step-by-step explanation using the quadratic formula:

Solve for x over the real numbers:

7 (x^2 - 4 x - 1) = 0

Divide both sides by 7:

x^2 - 4 x - 1 = 0

Add 1 to both sides:

x^2 - 4 x = 1

Add 4 to both sides:

x^2 - 4 x + 4 = 5

Write the left hand side as a square:

(x - 2)^2 = 5

Take the square root of both sides:

x - 2 = sqrt(5) or x - 2 = -sqrt(5)

Add 2 to both sides:

x = 2 + sqrt(5) or x - 2 = -sqrt(5)

Add 2 to both sides:

Answer:  x = 2 + sqrt(5) or x = 2 - sqrt(5)

6 0
3 years ago
If two 10-sided number cubes are rolled, which of the following sample space tools should be used to best show all of the outcom
yanalaym [24]

Answer:

A table

Step-by-step explanation:

you can start with one and have all the numbers that can land with one than two then three etc.

123

1 1 1

222

333

444

555

666

.........

8 0
3 years ago
Write the slope-intercept form of the equation of the line.<br> slope = 1, y, int = -2
choli [55]

Answer:

y = x - 2

General Formulas and Concepts:

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

Slope <em>m</em> = 1

y-intercept <em>b</em> = -2

<u>Step 2: Write linear function</u>

y = x - 2

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which table correctly shows all the sample spaces for tossing a coin and rolling an even number on a six-sided number cube?
    5·1 answer
  • Which division fact corresponds to the problem of 8×9 equals 72
    11·1 answer
  • Coffee cost $18.96 for 3 pounds was the cost of per pound of coffee let X be the number of pounds of coffee if I buy the total o
    8·2 answers
  • Use a calculator to solve the equation on the interval [0, 2π). Round to the nearest hundredth of a radian. sin 2x - sin x = 0 :
    13·2 answers
  • (Day 8) Find the value of each variable. The dot represents
    7·1 answer
  • Here is a map of the Missouri Botanical Garden. Clare walked all the way around the garden
    5·1 answer
  • Suppose that on the average, 7 students enrolled in a small liberal arts college have their automobiles stolen during the semest
    12·1 answer
  • Given a sphere with radius r, the formula 4pi r^2 gives
    12·1 answer
  • What is the converse of the statement? if p then q
    12·1 answer
  • An ice cream truck sells ice cream between 2 pm and 10 pm each night in the summer. At the end of the night the driver calculate
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!