Answer:
C. 60
Step-by-step explanation:
9 is 3 times 3, so you have to multiply 20 by 3 as well
Answer:
-6 because its lower than 0
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
Answer:
1. y = 4x - 27
2. y = -4x - 15
Step-by-step explanation:
If two lines are parallel, then they have the same slope. So, the slope of the line we are looking for needs to be 4. We can start by writing a point-slope equation:
y - y1 = m(x - x1)
We can substitute the values we have, the point we are using is (8, 5) because it needs to be on the line:
y - 5 = 4(x - 8)
We can distribute:
y - 5 = 4x - 32
y = 4x - 27
We are not given the slope-intercept form, so we must divide both sides by two to get it:
y = 1/4 x + 8
A perpendicular line has the slope that is the negative reciprocal of the one that is given. So, the slope of the line would be - 4. We can start by writing a point-slope equation:
y - y1 = m(x - x1)
We can substitute the values we have, the point we are using is (-5, 5) because it needs to be on the line:
y - 5 = -4(x + 5)
We can distribute:
y - 5 = -4x - 20
y = -4x - 15
Answers are
a. 32 m
(2x6 + 2x10)
b. 45.2 cm
(4 x 11.3)
c. 23 in.
(6 + 7 + 10)
d. 34.6 cm
(2x 5.3 + 2 x 12)
e. 8 cm
(4 x 2)
f. 29 ft
(4 + 13 + 12)
Perimeter of each of these figures is found by adding the total of the sides.