algebra check please
posted by sara .
a=2 b=5 c=4 d=6
question is
b^22bc+c^2
see if i did the steps right please
(5^2)(2*5*4)+(4^2)
(5^2)(10*4)+(4^2)
(5^2)(40)+(4^2)
5^2(40)4^2
25(40)4^2
25+404^2
25+4016
6516
49
No. Minus four squred is positive sixteen.
eighty percent of 280 is what number?
draw a diagram of the problem

23

2/3 (7/8  4x)  5/8 = 3/8
multiply 2/3 by 7/8  4x
2/3 x 7/8 = 7/12
2/3 x 4x = 8/3x
7/12  8/3x  5/8
1/24  8/3x = 3/8
add 1/24 to both sides
8/3x = 3/8 + 1/24
8/3x = 5/12
x = 5/12 / 8/3
x = 15/96 or
answer: x = 5/32 
9x6=30

2x3y=14 2x+y=10
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