
Hope you could get an idea from here.
Doubt clarification - use comment section.
Answer:
D. 5(x^2+5)
Step-by-step explanation:
5x^2+25
Viewing the two terms 5 is divisible by both
5X^2/5 +25/5
X^2+5
Therefore the equation will be represented by
5(x^2+5)
<u>Bus:</u>
40 min = 36 miles
1 min = 36 ÷ 40 = 0.9 mile
<u>Car:</u>
1 min = 0.9 x 1.4 = 1.26 miles
<u>Total distance covered by both vehicles in 1 min: </u>
1.26 + 0.9 = 2.16 miles
<u>Time needed for both of them to cover 36km:</u>
36 ÷ 2.16 = 16 2/3 min
Answer: They will meet 16 2/3 mins after they have started.
A=b/c -b/d
a+b/d=b/c
(da+b)/d=b/c
db=(da+b)c
c=db/da+b