Answer:
<h2>y = 8</h2>
Step-by-step explanation:




Answer:
(a) 1.4 hours or 1 hour 24 minutes.
(b) 15 miles.
(c) (5/6)t miles.
(d) 70 - (5/6 t miles.
Step-by-step explanation:
(a) speed = distance / time
50 = 70 / t
t = 70/50
t = 7/5
t = 1.4 hours.
(b) 18 minutes = 18/60 = 0.3 hours.
50 = distance / 0.3
distance = 50 * 0.3
= 15 miles.
(c). 50 = d / (t/60)
50 = 60d / t
60d = 50t
d = (5/6) t miles.
(d) Number of miles remaining after t minutes = 70 - (5/6) t miles.
Answer:
n=20
Step-by-step explanation:
5/10 equals 1/2 when simplified since 5÷5=1 and 10÷5=2
Half of 40 equals 40÷2 = 20 so n=20
Another way to do it is
Since the denominator is multiplied by 4 to get to 40
We must multiply 5 by 4 to get the numerator:
5×4=20
So n=20
Answer:
x = 21
eliminate the denominator of 4
you can do this buy multiplying both sides by 4
x -9 = 12
x = 21