Answer:
r=2
Step-by-step explanation:
y = k x^r is the formula for a direct variation
y = k x^ -r is the formula for a indirect variation
20= 5 (1/2)^ -r
Divide each side by 5
4 = (1/2) ^ -r
Rewriting
2^2 = 2^ -1 ^ -r
2^2 = 2 ^ r
The bases are the same so
2 =r
3.14(3(2) + 3(4))
3.14( 6 + 12)
3.14(18)
=56.52
5.9 • 10^4
just add the two numbers because the exponents are equal.
Answer:
c vbnnbvgh3456789okjhgc
Step-by-step explanation:
Answer:
x = 4
Step-by-step explanation:
The parallel segment divides the 2 sides of the triangle proportionally, that is
= 
( cross- multiply )
12x = 48 ( divide both sides by 12 )
x = 4
