Answer:
6
Step-by-step explanation:
We want to expand this; (x + y)⁴
This can be written as;
(x + y)² × (x + y)²
This gives;
(x² + 2xy + y²) × (x² + 2xy + y²)
This gives;
x²(x² + 2xy + y²) + 2xy(x² + 2xy + y²) + y²(x² + 2xy + y²) = x⁴ + 2x³y + x²y² + 2x³y + 4x²y² + 2xy³ + x²y² + 2xy³ + y⁴
Simplifying gives;
x⁴ + 4x³y + 4xy³ + 6x²y² + y⁴
Thus, the coefficient of x²y² is 6
Answer:
see below
Step-by-step explanation:
In decimal, the values of the fractions are ...
-0.2 = -0.200
-3/7 = -0.429
-2/8 = -0.250
So, in a, b, c order, they are ...
a = -3/7
b = -2/8
c = -0.2
Answer:
x=8,RS=12*8-32=64,PR=6*8+16=64
Step-by-step explanation:
PR=PS
6x+16=12x-32
6x=48
x=8
Answer:
its c
Step-by-step explanation:
hope this helps !
F = 1/2 J = 2M
J = 4M
M + F + J = $280
M + 2M + 4M = $280
7M = $280
M = $280/7 = $40
J = 4M = 4x40 = $160
F = 1/2 (160) = $80
40 + 160 + 80 = $280
Mary saved $40
Fred saved $80
John saved $160
