This is a ratio problem
6 / 800 = 9 / n (can say as 6 is to 800g as 9 is to n grams)
6n = 800(9) --- by multiplying means and extremes
n = 7200 / 6 divide by 6 to isolate n
n = 1200g
plug in to check 6 / 800 = 0.0075 9 / 1200 = 0.0075
Answer:
(1,3)
Step-by-step explanation:
recall the vertex of a quadratic graph is simply the location where the graphs makes a u-turn.
in this case, the graph clearly makes a u-turn at x = 1 and y = 3
or the coordinates (1,3)
.Answer:
3.65
Step-by-step explanation:
if 6 apples = $1.99, if you divide $1.99 by 6, you get the cost for one, then if you multiply that by 11, you get the amount for 11 apples. The real total is $3.64833333333 but if you round it, it goes to $3.65
Answer:
Below in bold.
Step-by-step explanation:
10x² + 3x -2 = -1
10x^2 + 3x - 1 = 0 Taking 10 out from the first 2 terms:-
10(x^2 + 0.3) - 1 = 0 Completing the square:
10[(x + 0.15)^2 - 0.15^2] - 1 = 0
10[(x + 0.15)^2 - 0.0225] - 1 = 0
10(x + 0.15)^2 - 0.225 - 1 = 0
10(x + 0.15)^2 - 1.225 = 0 is vertex form.
The vertex (turning point is at (-0.15, -1.225).
y- intercept is at the point where x = 0,
- that is at y = 10(0.15)^2 - 1.225 = -1
So at (0, -1).
Solving for x:
10(x + 0.15)^2 - 1.225 = 0
(x + 0.15)^2 = 0.1225
x + 0.15 = +/- sqrt 0.1225
x = -0.15 +/- sqrt 0.1225
The roots are -0.5, 0.2
It seems that 1 might be A or B and 2 might be C or D. Hope this helps. :-)