The standard form of a quadratic equation is :
ax² + bx + c = 0
And the quadratic formula is:
x=\frac{-b\pm\sqrt{b^2-4ac}}{2a} .
So, first step is to compare the given equation with the above equation to get the value of a, b and c.
So, a = -1, b = 2 and c = 1.
Next step is to plug in these values in the above formula. Therefore,







So, x =
Answer:
B. First term = 5, Common difference = -3
Step-by-step explanation:
The first term is f(1) = 8 - 3(1) = 8 - 3 = 5.
The common difference is the coefficient of n. Another way to see this is to compute the second term, f(2) = 8 - 3(2) = 8 - 6 = 2. The second term is 3 less than the first. The common difference is -3.
The sequence goes 5, 2, -1, -4, ...
Answer:
1.4 hours: 1 lawn
Step-by-step explanation:
it it took me 7 hours to mow 5 lawns then the ratio is
1.4 hours per lawn