645 rounded to the nearest tenth is 640, because 5 rounds up.
Answer:
12x+15,13x+1
Step-by-step explanation:
ABC=4x+8+4x+4x+7=12x+15
PQR=4x+5x+1+4x=13x+1
First put it in standard form:
<span>x^2 −14x -15 =0
a =1 b =-14 c=-15
Then use the quadratic formula:
x = [-b +-sq root (b^2 - 4ac)] / 2a
x = [--14 +- sq root (14^2 -4*1*-15] / 2*1
x = [14 +-sq root (196 +60)] / 2
</span><span>x = [14 +- 16] / 2
x1 = 15
x2 = -1
</span>
Why did the person above me say ok for an answer
Hey there!
We are given the points 
. To find the slope 
of such a line, we use the slope formula which is the following:
⇢Now, by plugging in our values, we get :
Therefore, the slope of the line is 
