Answer:
b is the answer
Step-by-step explanation:
Slope-intercept form is y = mx + b, so to turn that equation into slope-intercept you'll need to get y alone
4x - 8y = 8 --- subtract 4x
-8y = 8 - 4x --- divide by -8
y = -1 + (1/2)x --- reorder to match "mx + b"
y = (1/2)x - 1
in y = mx + b, "m" is the slope and "b" is the y-intercept. so for part B, your slope is (1/2) and your y-intercept is (-1). take the sign with you.
for part C, you'll need to know point-slope form: (y - y1) = m(x - x1)
you'll also need to be aware that "perpendicular" lines have a slope that is the opposite reciprocal of the original line.
the original slope is (1/2). change the sign to negative and form a reciprocal: your new slope is -2. plug that into your point-slope form
(y - y1) = m(x - x1)
(y - y1) = (-2)(x - x1)
and lastly, plug in your given point: (1, 2)
y - 2 = (-2)(x - 1)
so, just to look a little neater without all of the work:
A) y = (1/2)x - 1
B) m = (1/2), b = -1
C) y - 2 = (-2)(x - 1)
The scale factor is 0.6. Then the area of the actual garage is 19.44 m². And dimensions are 3.6 m and 5.4 m.
<h3>What is the scale factor?</h3>
Scale factor means the changing of the size of the object without changing the shape. The size of the object may be increased or decreased based on the scale factor.
Given
A scale model drawing of a garage is 6 centimeters wide and 9 centimeters long.
The scale model uses a scale in which 3 centimeters represent 1.8 meters.
The scale factor will be
m
Then the dimension of the actual garage will be
Length = 0.6 x 6 = 3.6 m
Width = 0.6 x 9 = 5.4 m
Then the area of the actual garage will be
Area of garage = Length x Width
Area of garage = 3.6 x 5.4
Area of garage = 19.44 m²
Thus, the area of the actual garage is 19.44 m². And dimensions are 3.6 m and 5.4 m.
More about the scale factor link is given below.
brainly.com/question/22644306
12.
7, 14, 14pi, 7^2pi
13.
13, 26, 26pi, 13^2pi
14.
9, 18, 18pi, 9^2pi
15.
10, 20, 20pi, 10^2pi
Answer:
9
Step-by-step explanation:
3
3 x
=
14 42
3