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
(5.4×10^2)(2.5×10^8)
= (5.4 x 2.5) (10^2 × 10^8)
= 13.5 x 10^10
= 1.35 x 10^11
I think it is 63 because 1/8 multiplied by 8 gives you 1 cup then multiply by 7 to give you the amount the company can sell
3x - y = 14
-9x + 3y = -42...divide by -3
3x - y = 14...same as first equation....means same line...means infinite solutions
answer is : 3rd answer choice
Answer: Diameter = 4 cm
Step-by-step explanation:
20π = (π)(r^2)(5)
divide by 5 * π
4 = r^2
find the square root of both sides
2 = r
2 * 2 = d
4 = d