You must use quadratic formula for each.
The term in front of the
is the "a" value in the quadratic formula. The term in front of the
is the "b" value. And the constant term (no x's) is the "c" value. Now you must simply substitute these values into the quadratic formula for each question.
1.)
and
2.)
and
3.)
and
4.)
and
Hope this helps!
Answer:
(-2,-10)
Step-by-step explanation:
So if y=5x and if y=9x+8 then those should be able to equal each other (substitution):
5x=9x+8
Subtract 5x from both sides:
0=4x+8
Subtract 8 from both sides:
-8=4x
Divide both sides by 4:
x=-2
If x=-2, then we can just plug it back into the first equation:
y=5(-2)
Simplify:
y=-10
Answer:
He can make 18 pieces. Observe:
22.5/1.25=18
Step-by-step explanation:
$21 - $3 = $18
$18 - $4.75 = $13.25
$13.25 - $4.75 = $8.50
$8.50 - $4.75 = $3.75
Which means that she played 3 games, and has $3.75 left over.
But if you were to divide 4.75 from 21 it would equal 4 games and $2 left over.
21 - 4.75 = 16. 25
16.25 - 4.75 = 11.50
11.50 - 4.75 = 6.75
6.75 - 4.75 = 2
4 games and $2 dollars left over.
Answer - 3
Answer:
(-1.5,0) (0,0.5)
Step-by-step explanation:
I graphed it
