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3 years ago

Triangle ABC is inscribed in the circle, mA=50, and AB=BC. Find arch AC.

Mathematics

1 answer:

Karolina [17]3 years ago

3 0

The answer is C) 160.

We know this because if mA = 50, we know that mC must also be 50. This is due to the fact that AB = BC. This leaves us with mB as 80 since the angles of a triangle always have to equal 180.

Now knowing this, it is easy to find the arc lengths in degrees. When you have a transcribed triangle, all we are going to do here is double the angle of the triangle to get the arc measure.

mB = 80

80*2 = 160

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Ju Chan solved the previous question by finding the expression 4(-15). Which addition problem would give the same result? Choose

Umnica [9.8K]

Answer:

C. (-1)(15+15+15+15)

D. (-15)+(-15)+(-15)+(-15)

Step-by-step explanation:

The original expression: 4(-15)=-60

Let's try choice A: 15+15+15+15=60(not a negative number, so does not work)

Let's try choice B: 4+4+4+4=16(nowhere near -60)no

Let's try choice C: (-1)(15+15+15+15)=(-1)(60)=-60--yes

Let's try choice D: (-15)+(-15)+(-15)+(-15)=-60--yes

Only choices C and D work.

3 0

3 years ago

SOMEONE PLEASE HELP MATH

klio [65]

Circumference = 2πr
3π=2πr
r=3π÷2π
r=3/2
area of a circle= πr²
=π×(3/2)²
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5 0

3 years ago

Read 2 more answers

8x+11=14-1x how does it work

Alenkinab [10]

Answer:

x = 1/3

Step-by-step explanation:

Step 1: Write equation

8x + 11 = 14 - 1x

Step 2: Solve for x

Simplify: 8x + 11 = 14 - x
Add x to both sides: 9x + 11 = 14
Subtract 11 on both sides: 9x = 3
Divide both sides by 9: x = 3/9
Simplify: x = 1/3

Step 3: Check

Plug in x to verify it's a solution.

8(1/3) + 11 = 14 - 1(1/3)

8/3 + 11 = 14 - 1/3

41/3 = 41/3

3 0

3 years ago

Read 2 more answers

Find a number that when decreased by 15 is 4 times its opposite

ohaa [14]

The number three (3) when decreased by fifteen (15) is four (4) times its opposite.

In this exercise, you're required to solve for an unknown number by using a variable to represent the number in relation to the known variables (constants) and representing it as an algebraic expression.

Let the number be x.

Translating the word problem into an algebraic expression, we have;

$x \; - 15 = -4x$

Rearranging the algebraic expression by (collecting like terms), we have;

$x \; + \;4x = 15\\\\5x = 15$

Dividing both sides by 5, we have;

$x = \frac{15}{5}$

x = 3

Therefore, number three (3) when decreased by fifteen (15) is four (4) times its opposite.

Find more information: brainly.com/question/15605874

6 0

3 years ago

Answers ASAP simplify the ratio answer both questions

ruslelena [56]

Answer:

The answers are 40 : 1 and 16 : 5

Step-by-step explanation:

3. ) 400 : 10

Cancel out two of the zeros to get-

40 : 1

6. ) 1600m : 5km

1 km = 100 m, Therefore-

1600 : 500

Cancel out the zeros to get-

16 : 5

4 0

3 years ago