Step-by-step explanation:
The slope of a line connecting two points is:
m = (y₂ − y₁) / (x₂ − x₁)
The slope of line 1 is:
m = (4 − 0) / (7 − 1)
m = 2/3
The slope of line 2 is:
m = (6 − 0) / (3 − 7)
m = -3/2
Parallel lines have equal slopes.
Perpendicular lines have opposite inverse slopes.
2/3 and -3/2 are opposite inverses, so the lines are perpendicular.
Answer:
420,000 J/Kg
Step-by-step explanation:
energy= temperature change* mass* specific heat capacity
energy= 20*5*4200
energy= 420,000
Answer:
A
Step-by-step explanation:
Times 3/8 by two and get the 6/16, which has the same denominator as 7/16. Then, add 6/16 and 7/16, and you'll get an answer of 13/16.
Hope this helped, have a wonderful rest of your week! :)
Answer:
I think b, but I may be wrong
