Answer:
0.275
Step-by-step explanation:
Separate the 1st 2 terms from the 3rd term:
y = x^2 - 8x + 7
Next, take half of the coefficient of x (that is, half of -8).
In this case that'd come out to -4.
Square this -4 and add the result (16) to x^2 - 8x: x^2 - 8x + 16; subtract -16 from 7:
x^2 - 8x + 16 7 - 16
Write the trinomial as
a perfect square:
(x-4)^2 -9
The answer is (x-4)^2 - 9.
This approach is very useful. Note that the vertex of the parabola represented by the given polynomiql is (4,-9).
3/2 ÷ 1/4= n
n(3/2) (4/1) = n
n= 12÷2
Which gives you six.
Answer:
Step-by-step explanation:
Satish is making school spirit key chains, which consist of a sequence of n beads, that are blue and golden.
Also given, there are k ≤ n blue beads.
So, the number of unique key chains that can be made is :
;
Answer:
y = -15x + 250
Step-by-step explanation:
Slope: I see two distinct points: <em>(14, 40) and (10, 100)</em>.
Using the slope equation, I get: <em>(100 - 40)/(10 - 14) = </em><em>-15</em>.
The slope is -15, so in a point-slope formula, it will go before the x.
Y-intercept: on the graph, when x = 0, y is 250. That goes after the x +.