Answer:
b^2-4b+3=0
b²-3x-b+3=0
b(b-3)-1(b-3)=0
(b-3)(b-1)=0
either
b=3 or b=1
.
2n^2 + 7 = -4n + 5
2n²+4n+7-5=0
2n²+4n+2=0
2(n²+2n+1)=0
(n+1)²=0/2
:.n=-1
.
x - 3x^2 = 5+ 2x - x^2
0=5+ 2x - x^2-x +3x^2
0=5+x+2x²
2x²+x+5=0
comparing above equation with ax²+bx +c we get
a=2
b=1
c=5
x={-b±√(b²-4ac)}/2a ={-1±√(1²-4×2×5)}/2×1
={-1±√-39}/2
Answer:
58.8
Step-by-step explanation:
multiply 16% by 70 then substract your answer by 70
Answer:
24
Step-by-step explanation:
red is most popular with 33 votes. silver is least popular with 9 votes.
33 - 9
24
Answer:graph a
Step-by-step explanation:
bc if you subtract 3
from 2 you find the one you line your numbers up with
Answer:
h less-than 2
Step-by-step explanation:
Let
h ---> the number of hours
y ---> the total charge in dollars
we know that
The linear equation is slope intercept form is equal to

where
m is the slope or unit rate of the linear equation
b is the y-intercept or initial value of the linear equation
we have
<em>Grayson</em>
The slope is equal to 
The y-intercept is 
so
The total charge is equal to
----> equation A
<em>Ian</em>
The slope is equal to 
The y-intercept is 
so
The total charge is equal to
----> equation B
For what number of hours does Grayson charge more than Ian?
The inequality that represent this situation is

solve for x
Group terms


Divide by 10 both sides

Rewrite the expression
----> h less than 2 hours