Answer:
On solving 
The value of x = 
Step-by-step explanation:
Solve:
Subtraction property of Equality states that Subtract the same number from both sides of the equation.
Subtract 
from both sides of the above equation:
On simplify we get;
⇒ 
or we can write it as 
Therefore, the value of x =
Write two ratios equal to each other :
12/5 = 8/x(second speed)
Cross multiply:
12x = 40
Divide both sides by 12:
X = 3.333 or 3 1/3 km/h
second speed = 3.33 ( as a decimal) or 3 1/3 ( as a fraction) km/h
Monomial binomial trinomial and quadratic
Answer:
x = 16
Step-by-step explanation:
(b)
Since the triangles are similar then the ratio of corresponding sides are equal, that is
= 
, substitute values
= 
( cross- multiply )
10x = 160 ( divide both sides by 10 )
x = 16
