Answer:
x=a²+ab+b²/a+b , y=-ab/a+b
Step-by-step explanation:
The system of the given equation may b written as:
ax+by-a²=0
bx+ay-b²=0
Here,
a1=a,b1=b,c1= -a²
a2=b,b2=a and c2= -b²
By cross multiplication we get
x/b*(-b²)-(-a²)*a = -y/a*(-b²)-(-a²)*b = 1/a*a-b*b
x/-b³+a³ = -y/-ab²+a²b = 1/a²-b²
Now
x/-b³+a³ = 1/a²-b²
x=a³-b³/a²-b²
x=(a-b)(a²+ab+b²)/(a-b)(a+b)
x=a²+ab+b²/a+b
And,
-y/-ab²+a²b = 1/a²-b²
-y=a²b -ab²/a²-b²
y=ab²-a²b/a²-b²
y=ab(b-a)/(a-b)(a+b)
y= -ab(a-b)/(a-b)(a+b)
y= -ab/a+b
Hence x=a²+ab+b²/a+b , y=-ab/a+b....
Answer:
90
54
Step-by-step explanation:
Step-by-step explanation:
Solve for
k
by simplifying both sides of the equation, then isolating the variable.
Exact Form:
k
=
327
4
Decimal Form:
k
=
81.75
Mixed Number Form:
k
=
81
34
Answer:
just trying to get some more points
Step-by-step explanation:
lol
There are 60 minutes in 1 hr, so in 1 hour, her heart beats 65(60)
24 hours in 1 day, so it beats in 1 day 24(65 * 60)
365 days in 1 year, so it beats in 1 year, 365(24 * 65 * 60)
how much will it be in 10 years then? 10(365 * 24 * 65 * 60).