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Elina [12.6K]
3 years ago
15

What angle in radians is subtended by an arc 1.50 m long on the circumference of a circle of radius 2.50 m? what is this angle i

n degrees? (b) an arc 14.0 cm long on the circumference of a circle subtends an angle of 128°. what is the radius of the circle? (c) the angle between two r?
Mathematics
1 answer:
Evgen [1.6K]3 years ago
3 0
Working on the same question
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ABC is dilated by a scale factor of 3 with the origin as the center of dilation, resulting in the image A'B'C'. If the slope of
uysha [10]

Answer:

The slope of A'B' = -1.2 ⇒ answer A

Step-by-step explanation:

* Lets talk about dilation

- A dilation is a transformation that changes the size of a figure.  

- It can become larger or smaller, but the shape of the

 figure does not change.  

- The scale factor, measures how much larger or smaller  

  the image will be

- If the scale factor greater than 1, then the image will be larger

- If the scale factor between 0 and 1, then the image will be smaller

- If the center of the dilation is the origin then multiply each coordinate

 by the scale factor

* In the problem

∵ Δ ABC is dilated by a scale factor of 3 with the origin as the center

  of dilation

- Let point A is (a , b) and point B is (c , d)

∵ The slope of the line which passes through points (x1 , y1) and (x2 , y2)

  is m = (y2 - y1)/(x2 - x1)

∴ The slope of AB = (d - b)/(c - a) = -1.2

∵ Point A' is (3a , 3b) and point B' is (3c , 3d)

∴ The slope of A'B' = (3d - 3b)/(3c - 3a)

- Take 3 as a common factor from up and down

∴ The slope of A'B' = 3(d - b)/3(c - a) ⇒ cancel 3 up with 3 down

∴ The slope of A'B' = (d - b)/(c - a) = the slope of AB

∵ The slope of AB = -1.2

∴ The slope of A'B' = -1.2

* The slope of A'B' = -1.2

3 0
3 years ago
A piece of paper is in the shape of a rectangle. The piece of paper is 1 5/8 inches (in.) wide and 8 3/4 in. long
Alexandra [31]

Answer:

.403645833 square inches

Step-by-step explanation:

1 5/8-1 equals 5/8

8.75-1 equals 7.75

7.75/12 equals .6458

.6458 times 5/8 equals .4 square inches

3 0
3 years ago
What is the best estimate for the product of 289 and 7
iVinArrow [24]
I would say about 41.29
3 0
3 years ago
Read 2 more answers
Write the equation 12 − y = 2x − 5 in slope-intercept form. What are the slope and y-intercept? A. y=2x−17,m=2, y-intercept (0,−
MrRissso [65]

Answer:

D

Step-by-step explanation:

12-y=2x-5

+5        +5  ( add 5 to both sides)

17-y=2x

-17    -17  (Subtract 17 to get y by itself)

-y=2x-17

divide by -1 because y cant be negative

y=-2x+17

m=-2 and y-intercept= 17

I hope thats right :)  

8 0
2 years ago
A __ fraction is a fraction whose denominator is 10,100,or some other multiple of 10.
Alexxandr [17]

Answer: A decimal fraction is a fraction whose denominator is 10,100,or some other multiple of 10.

Step-by-step explanation:

8 0
3 years ago
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