Answer:
Step-by-step explanation:
A perfect square is a number that can be expressed as the product of two equal integers. To determine that a trinomial is a perfect square we use the the discriminant given by:
b^2-4ac
where a,b and c have been obtained from the trinomial given by:
ax^2+bx+c;
if the value of the discriminant is a perfect square then the trinomial is a perfect square trinomial
4/5 as a decimal would be 0.8. This is because 5 x 20 = 100, so then if you multiply 5 by 20, then you need to do the same for 4. 4 x 20 = 80. the new fraction is 80/100. Then, that simplifies to 8/10, which is equivalent to eight tenths, which is written as 0.8.
Answer:
1
Step-by-step explanation:
The average rate of change is the gradient _
Gradient = Rise / Run = (y2 - y1) / (x2 - x1)
From the table ;
x2 = 4 ; x1 = - 1 ; y2 = 5 ; y1 = 0
Gradient = (y2 - y1) / (x2 - x1) = (5-0) / (4 - - 1) = 5/5 = 1
