Step-by-step explanation:
1 km = 1000 m
(hence the term "kilo" which means 1000).
so. he runs 1000 m at the rate of 3 minutes per km, that means 3 minutes per 1000 m.
now, we can see the solution already with our eyes.
but let's do it formally :
the rate or ratio between time and distance must be the same for the same speed.
so,
3 min / 1000 m = x min / 500 m
500 m × 3 min / 1000 m = x min
1/2 × 3 min = x min
3/2 = 1.5 min = x min
so, it takes him 1.5 minutes (90 seconds) to run 500 m.
Answer:
- 2.25/3
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given
Required
Find a and b
Substitute for x and y in
Rewrite as:
The above implies that (a) is correct;
Hence:
So, the equation is:
Answer:
7×6×5×4×3×2×1+5 can be written as 5*[7*6*5*4*3*2*+1] or 5*(1009). So, other than the number and 1, it has 5 and 1009 as its factors too. So it is a composite number.
Step-by-step explanation:
A composite number is a positive integer that has a factor other than 1 and itself.
Answer:
12
Step-by-step explanation:
u have to mutypl and div it up sum and k/=+56+8=90/h=+5689-097/p=11+y=1+11=12
