Answer:
step 1. The vertex is when x = -b/2a (by definition)
step 2. a = -16, b = 15. x(vertex) = -15/2(-16) = 15/32
step 3. y(vertex) = -16(15/32)^2 + 15(15/32) = 225/64 = 3 33/64
step 4. since the ball started at a height of 5 feet you add 5.
step 5. answer: 3 33/64 + 5 = 8 33/64.
12x -11 = -179
To solve for X you need to isolate the variable.
First add 11 to each side:
12x -11 + 11 = -179 + 11
Simplify:
12x = -168
Now divide both sides by 12:
12x / 12 = -168 / 12
Simplify:
x = -14
Answer: 25x^2 + 40x + 16
Explanation: Apply perfect square formula
(5x)^2 + 2 * 5x * 4 + 4^2
Simplify
Answer:
Distribute the 3 to x + 2, and distribute the 5 to (2x – 3).
Step-by-step explanation:
Given
Required
Reasonable first step
The reasonable first step is to open the brackets; i.e. distribute 3 to its bracket and 5 to its bracket.
This gives:
<em>Then the solution can be continued</em>
Answer:
x=0 x=2
Step-by-step explanation:
4x=y
2x^2-y=0
If y=4x you can use substitution
2x^2-4x=0
2x(x-2)=0
2x=0 x-2=0
x=0 x=2