If 85% are men, then (100 - 85), 15% are not men
so, 15% are not men which means that 15% are 360 = 15% of x = 360
(x = total no. of workers)
so, x = 360 × 
= 2400
The total number of people = <em><u>2400</u></em>
<em><u>( </u></em><em>sorry I didn't use pencil...</em><em><u>)</u></em>
OK. These problems are easy if you know the quadratic formula,
and they're impossible if you don't.
Here's the quadratic formula:
When the equation is in the form of Ax² + Bx + C = 0
then x = [ -B plus or minus √(B²-4AC) ] / 2A
I'm sure that formula is in your text or your study notes,
right before these questions. You should cut it out or
copy it, and tape it inside the cover of your notebook.
Then, you'll always have it when you need it, until
you have it memorized and can rattle it off.
The first question says 3x² + 5x + 2 = 0
Is this in the form of Ax² + Bx + C = 0 ?
Yes ! A=3 B=5 C=2
so you can use the quadratic formula to solve it.
x = [ -B plus or minus √(B²-4AC) ] / 2A
= [ -5 plus or minus √(5² - 4·3·2) ] / 2·3
= [ -5 plus or minus √(25 - 24) ] / 6
= [ -5 plus or minus √1 ] / 6
x = -4 / 6 = -2/3
and
x = -6 / 6 = -1 .
_______________________________________
The second question says
4x² + 5x - 1 = 0
Is this in the form of Ax² + Bx + C = 0 ?
Yes it is ! A=4 B=5 C= -1
so you can use the quadratic formula to solve it.
x = [ -B plus or minus √(B²-4AC) ] / 2A
Now, you take it from here.
Answer:
x=2
Step-by-step explanation:
Hopefully these steps will help u!!!
Leave a thanks to let me know this helped u:))
Answer:
is there another point or a y intercept for the Grand River valley if not then i only know the first part for the equation which would be: y= -3/8 x but I dint know the y intercept so I can't finish the equation
