Answer:
The answer is below
Step-by-step explanation:
The slope of a line (m) is given by:
Two lines are parallel if they have the same slope and perpendicular if the product of their slope is -1.
1)
Since the product of their slope is -1, they are perpendicular
2)
Since the slope is not the same or product of their slope is not -1, they are neither parallel or perpendicular
3)
Since the slopes are the same, they are parallel
4)
Since the slopes are the same, they are parallel
5)
Since the product of their slope is -1, they are perpendicular
She walked 11.25 miles because she walked 3.5 mi. the first day, 3.75 mi. the second day, and 4 mi. the third day.
Answer:
-4
Step-by-step explanation:
when the signs are different the result is negative
(+ )*( - )= ( -)
Answer:
x = 6 1/4
y = 3 3/4
Step-by-step explanation:
let 'x' = gallons of 6% nitrogen
let 'y' = gallons of 30% nitrogen
system of equations:
x + y = 10; let y = 10-x
6x + 30y = 10(15)
substitute '10-x':
6x + 30(10-x) = 150
6x + 300 - 30x = 150
-24x = -150
x = 6 1/4
y = 3 3/4
Recall that all three angles in a triangle equals 180.
Knowing this, we just have to add up all the angles and figure out what the value 'x' is.
(x-22 + x-17 + 3x+19) = 180
Simplify:
5x - 20 = 180
Add 20 to both sides:
5x = 200
Divide both sides by 5:
x = 40
Now that we found the value for x, we need to solve for angle A.
Simply input the value of 'x' into angle A's equation:
40 - 22 = 18
Angle A = 18 degrees
Good luck! If you need me to explain anything, just ask :))
-T.B.