Answer:
(0.118, 4.882)
Step-by-step explanation:
If a motorist drives for m hours at 120km/hr, then the Distance of the motorist is expressed as;
Distance = Speed * time
da = 120m
If he drives n hours at 18km/hr;
db = 18 * n
db = 18n
Speed of the motorist altogether is expressed as;
Speed =78km/5hrs
Speed = 15.6km/hr
SInce the total distnce is 78km
120m + 18n = 78 ....1 ..... * 1
If total time is 5hrs
m + n = 5....2 ...*18
Solve simultaneously
120m + 18n = 78
18m + 18n = 90
Subtract
120m - 18m = 78-90
102m = -12
m = 0.118 hrs
m =
Since m + n = 5
n = 5 - m
= 5 - 12/102
n = 4.882
Hence (m,n) is (0.118, 4.882)
Answer:
Part A: Carie is not correct
Part B: D(2 ,1)
Step-by-step explanation:
I need more details
Answer:
Step-by-step explanation:
1) y - 6 = -12(x + 4)
y = -12x - 48 + 6 = -12x - 42
Answer is (C)
2) y + 4 = -5(x - 3)
Only the point (3,-4) would be located on this line
Answer is (C)
Here is the answer:
if you need step by step let me know
