Answer:
x = 200
Step-by-step explanation:
1/5x – 2/3y = 30
substitute in y
1/5x - 2/3(15) = 30
multiply
1/5x - 10 = 30
isolate the variable
1/5x = 40
multiply each side by 5
x = 200
45 minutes = 3/4 hours
so his speed = 6 / 3/4 kph
= 8 km / h Answer
Answer:
d) x+y = 4
Step-by-step explanation:
(−1, 5) and (1, 3)
y = mx + b
m = (3 - 5) / (1 - (-1)) = -2 / 2 = -1
b = y - mx = 3 - ((-1) x 1) = 4
equation: y = -x + 4
62
×22
=124
+1240
=1364
her answer is not responsible because how can 124+1240=1,042
