Answer:
x ∈ {-5, 3}
Step-by-step explanation:
The vertex form of the equation for a parabola with vertex (h, k) and vertical scale factor "a" is ...
... y = a(x -h)^2 +k
Your vertex and y-intercept allow us to find the value of "a" by putting these numbers into this equation.
... -15 = a(0 -(-1))^2 +(-16)
.. -15 = a -16 . . . . simplify
... 1 = a . . . . . . . . add 16
Then the vertex form of the equation of the parabola is ...
... y = (x+1)^2 -16
The x-intercepts occur where y = 0:
... 0 = (x +1)^2 -16
... 16 = (x +1)^2 . . . . . . . . . add 16
... ±√16 = ±4 = x +1 . . . . . take the square root
... -1 ±4 = x . . . . . . . . . . . . these are the x-intercepts: -5, +3
Answer: 45oz
Step-by-step explanation:
Please give me a heart and a brainliest ;)
Answer:
I. x = -1
II. y = 1
Step-by-step explanation:
Given the following algebraic expressions;
9x + 10y = 1 .......equation 1
9x - 6y = -15 ......equation 2
To solve using the elimination method, we would subtract eqn 1 from eqn 2.
(9x - 9x) + (-6y - 10y) = (-15 - 1)
0x - 16y = -16
-16y = -16
16y = 16
y = 16/16
y = 1
Next, we would find the value of x;
From eqn 1;
9x + 10y = 1
Substituting the value of y, we have;
9x + 10(1) = 1
9x + 10 = 1
9x = 1 - 10
9x = -9
x = -9/9
x = -1
Answer: Based on the median, A has 5 more chocolate chips on average than B
Step-by-step explanation: The median for brand A is 20 and the Median for brand B is 15
Anything divided by 5 is the same as multiplying by 0.2, so double it and divide it by ten -2.4