Name this triangle ABC, where A is the angle divided into equal parts by bisector AD and point B lies under the bisector AD and point C lies over the bisector AD.
According to the bisector theorem:
.
On the picture CD=q and BC=16, then BD=16-q.
The previous ratio becomes:
.
Answer: q=9
Since quadratic coefient is 1 (term in front of x^2)
take 1/2 of linear cofient (12) and square it
12/2=6, 6^2=36
add that to both sides
x^2+12x+36=-11+36
factor perfect square
(x+6)^2=25
sqrt both sides and take positiv and negative roots
x+6=+/-5
minus 6 both sides
x=-6+/-5
x=-6+5 or x=-6-5
x=-1 or -11
answer is {-11,-1}
Answer:
No one can answer unless you include the money per hour or day or week
Step-by-step explanation:
Answer: x=2
Step-by-step explanation:
20+4(3x-5)+2x=28
We move all terms to the left:
20+4(3x-5)+2x-(28)=0
We add all the numbers together, and all the variables
2x+4(3x-5)-8=0
We multiply parentheses
2x+12x-20-8=0
We add all the numbers together, and all the variables
14x-28=0
We move all terms containing x to the left, all other terms to the right
14x=28
x=28/14
x=2