2x^2+20x = -38
2x^2 + 20x + 38 = 0
Divide both sides by 2.
x^2 + 10x + 19 = 0
The quadratic formula works very well here.
Let a = 1, b = 10 and c = 19
x = [-b +- sqrt{b^2 - 4ac}]/(2a)
Plug those values into the formula to find two answers for x.
One is negative and the other positive.
Good luck.
<span>Amount of
emails which are sent = 12,000
Amount of emails which are opened = 300
the question asked the open rate as a percentage. </span>
<span>Hence, we can write
open rate as,
Open rate = (number of opened emails / number
of sent emails) x 100%
= (300 / 12,000) x
100%
= 2.5 %</span>
<span> </span>
Answer:
is a
Step-by-step explanation:
be i know ever thing in the world
Answer: 4 hours
Step-by-step explanation:
4 Hours
Explanation:
Make h = hours
You add the $55 extra cost for the assistant
$125h + $55 = $555
Use additive inverse to isolate the term with the variable
$125h + $55 - $55 = $555 - $55
Use multiplicative inverse to isolate the variable
=
Hours would be: 4 Hours.
I hope this helps! Please mark brainliest.