Answer:
3/1/4
That's the expression represents Lena's speed in miles per hour
If x< -5 then x+5 < 0
but the absolute value of x+5 > 0
The quadratic formula is:

and

Let's identify our a, b, and c values:
a: -1
b: 1
c: 12
Plug in the values for a, b, and c into the equation. Let's do the first equation:

Simplify everything in the radical:

Simplify the radical:

Combine like terms:

Simplify:

This is one solution, now, let's solve for the other equation:
Since when simplified, everything is the same except the subtraction sign, we can skip the simplification again and change the sign to subtraction:

Combine like terms:

Simplify:

Your final answers are:


Answer:
Step-by-step explanation:
<em>Refer to attached picture.</em>
<u>The grazing area of the goat is 3/4 of area of circle with 12 ft radius:</u>
- A = 3/4(πr²) = 3/4(π*12²) = 108π or 339.29 ft²
Answer:
y = -8
Step-by-step explanation:
If the equation is parallel to y = 9, the you already know that the equation must be y = some value. It passes through the point (3,-8). Just put that y value into the equation to get y = -8