(x-y)^2 +4xy = (x+y)^2
FOIL
x^2 -2xy+y^2 +4xy = (x+y)^2 x^2 -2xy
Combine like terms
x^2 +2xy +y^2 = (x+y)^2 x^2 +2xy
Factor
(x+y)^2 = (x+y)^2 (x+y)^2
Ok, so if he walks 4 miles per 64 minutes, or 4 miles/64 min which will
reduce to 1 mile/ 16 min, then the numbers of miles he walks in a given
number of minutes would be
1/16 * number of minutes
The question states we represent miles with y and number of minutes with x, so...
y = 1/16x
So let's check it...
How many miles (y) in 64 minutes (x)
y = 1/16x
y = 1/16 * 64
y = 64/16 = 4 miles
Yep! It checks!
Answer:
p= $10,000
Step-by-step explanation:
Write out the equation: 5500/p = 55/100
Cross multiply: 55p = 550,000
Divide: 550,000/55
Solve: 10,000
Mrs. Merson paid $10K for the car
Hope this helped!
Answer:
Step-by-step explanation:
To solve this, you need to find the unit price by dividing the cost by the amount. For Mike, divide $2 by 2 to get 1. So, Mike sells hot dogs for $1. Next, divide 2.25 by 3 to get $0.75. So, Sue sells hot dogs for $0.75.
Joe: $1.50
Mike: $1
Jen: $1.25
Sue: $0.75
So, the best deal is Sue because it is the cheapest per unit. Hope this helped!
Answer:
l=24in
Step-by-step explanation:
P=2(l+w)
l=P
2﹣w=68
2﹣10=24in
