By "y = −9x2 − 2x" I assume you meant <span>y = −9x^2 − 2x (the "^" symbol represents exponentiation).
Let's find the first derivative of y with respect to x: dy/dx = -18x - 2. This is equivalent to the slope of the tangent line to the (parabolic) curve. Now let this derivative (slope) = 0 and solve for the critical value: -18x - 2 = 0, or
-18x = 2. Solving for x, x = -2/18, or x = -1/9.
When x = -1/9, y = -9(-1/9)^2 - 2(-1/9). This simplifies to y = -9/9 + 2/9, or
y = -7/9.
The only point at which the tangent to the curve is horiz. is (-1/9,-7/9).</span>
Answer:
She gives 16 ounces to her neighbor
Step-by-step explanation:
How much did you use to make sauce
6 * 3/4 = 18/4 =9/2 = 4.5 lbs
That leaves 6-4.5 = 1.5 lbs
She give 2/3 of this to her neighbor
1.5 * 2/3
Changing the decimal to a fraction
3/2 * 2/3 = 1
She gives 1 pound to her neighbor, but we want it in ounces
16 ounces equals 1 pound
She gives 16 ounces to her neighbor
Answer:
c
Step-by-step explanation:
(3x)ex2
Answer: on the number line put -1.50 (1 and a half (1 1/2))
Step-by-step explanation:
$1.50 more than his account is $200.
the balance should be $-1.50
on the number line put -1.50
Answer:
a. parallelgram
Step-by-step explanation:
