Answer:
f(x) = 1/2x
Step-by-step explanation:
When x = -4 the output is -2
We are dividing by 2
When x = -2 the output is -1
f(x) = 1/2 x
Check when x = 2
f(2) = 1/2 (2) =1
Answer:
j = 0 or j = 30
Step-by-step explanation:
j² - 30j = 0
Factorise j out of both terms on the left side.
j (j-30) = 0
Apply zero product rule.
j = 0 or j-30 = 0
Find the value of j.
j = 0 or j = 30
Answer:
79% decrease
Step-by-step explanation:
Subtract 6400-1344=5056
Find percent decrease (5056/6400)x100=79
79% decrease is our final answer
X^2 = 6+5x => x^2 - 5x - 6 = 0 => (x-6)(x+1)=0
This riddle has two solutions:
x=6 or x=-1
indeed 6*6 = 36 = 5*6+6
indeed -1*-1 = 1 = 5*-1 + 6
The -1 is kind of a surprise, isn't it?
