Answer:
Y=-4x-5
Step-by-step explanation:
-21=-4(4)+b
-21=-16+b
b=-5
y=-4x-5
Answer:
40 mph
Step-by-step explanation:
20 miles in 1/2 hour
1/2 times 2 is 1, so 20 times two is 40 mph
Answer:
450miles
Step-by-step explanation:
Because she is riding at 20 miles per houre means that she ride 450 miles in 5 houre.
Answer:
x=-1/2
Step-by-step explanation:
2(4x + 2) = 4x – 12(x - 1)
8x+4=4x-12x+12
8x+4=-8x+12
-4 -4
8x=-8x-8
+8x +8x
16x=-8
16x/16=-8/16
x=-1/2