Step-by-step explanation:
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
X ÷ 2 - 13 = 1
Write the division as a fraction
Multiple both sides of the equation by 2
Reduce the number with greatest common divisor 2
Multiply the numbers
Then u will have
Move constant to the right by adding its opposite sides
Eliminate the opposites
Then you have
Add the numbers
Answer:
15.60 times 100 divided by 390=4%
Step-by-step explanation:
Answer:
A because 72 divided by 8 is 9 and Henry earns $12 per hour and mike get $9 per hour so there is a $3 difference
Step-by-step explanation: