Answer:
It's gonna be C and good luck!
15376
/ I
961 16
/ I / I
31 31 4 4
31 × 4 = 124
The square root of 15376 is 124
600,000 because the place value 6 is greater than 5, so you round up.
Sung drove to the mountains
s₁=speed when Sung drove to the mountains.
t=10 hour.
d=distance.
s₁=d/t
s₁=d/10 hour ⇒s₁=d/10 (1)
Sung drove home:
s₂=speed when Sung drove home.
t=7 hour
s₂=s₁+18 miles/hour
s₂=d/7 hour ⇒s₁+18 miles/h=d/7 hour ⇒ s₁+18=d/7 (2)
Whit the equations (1) and (2) make a system of equations:
s₁=d/10
s₁+18=d/7
we can solve this system of equations by substitution method.
d/10+18=d/7
least common multiple=70
7d+1260=10d
7d-10d=-1260
-3d=-1260
d=-1260/-3=420
Answer: distance= 420 miles.
Answer:
a) 1/10 x 5/10 = 1/20
b) 1/10 x 5/9 = 1/18
Step-by-step explanation:
