2x^2+20x=-38 divide both sides by 2
x^2+10x=-19, halve the linear coefficient, square it, than add that value to both sides of the equation, in this case add (10/2)^2=25...
x^2+10x+25=6 now the left side is a perfect square
(x+5)^2=6 take the square root of both sides
x+5=±√6 subtract 5 from both sides
x=-5±√6 (so answer c.)
Answer:
<h2>A. y = 5</h2>
Step-by-step explanation:
A horizontal line has an equation: y = a (a - any real number).
Each point on a horizontal line y = a, has coordinates (x, a) (x - any real number).
We have the point (-7, 5) → y = 5
Answer:
2 1/8 mph.
Step-by-step explanation:
Distance= time x speed
Same way, Distance divided by time=speed.
In this situation, just divide 5 2/3 by 2 2/3.
Hope this helps!
Answer:
yes
Step-by-step explanation:
2.20 because 13.20/6=$2.20
