Ok lol I was going to put 180 but if you got it than that’s fine.
Given:
The point is B(2,5) and its image is B'(1,2.5).
To find:
The scale factor.
Solution:
If a figure is dilated by the scale factor k and (0,0) is the center of then the scale factor is defined as

x-coordinate of point B' is 1 and the x-coordinate of point B is 2. So, the scale factor is

Therefore, the scale factor is
and the correct option is D.
Domik weights 30 pounds more than his sister
Together they weigh 330 pounds
Let "x" represent the weight of Dominik's sister, then his weight can be expressed as "x+30"
And their total weight can be calculated as:

From this expression you can calculate the value of x:

x=150 pounds
x+30=150+30=180 pounds
Dominik weights 180pounds and his sister 150 pounds
The slope of the parallel line is -6/7
the slope of the perpendicular line is 7/6
the slope of the line = -6/7
the gradient of two parallel lines are equal
the product of the gradient of two perpendicular lines is -1
: the gradient m1*m2 = -1
m2= -1(-6/7)
m2= 7/6
The sum of all three angles of a triangle is always 180 degrees.
Step-by-step explanation:
4)
45 + 35.8 = a
180 - a = ?
5)
100 + 40.7 = a
180 - a = ?
6)
90 + 16.5 = a
180 - a = ?
ANSWER:
4) x = 99.2 (a is 80.8)
5) x = 39.3 (a is 140.7)
6) x = 73.5 (a is 106.5)