221 256 - 229 = 221 227
4m2-256 = 0 Add 256 to both sides: 4m2 = 256 Divide both sides by 4: m2 = 64 Square root both sides to find the value of m: m = 8 Alternatively, if 4m is to be squared, and not just the m: (4m)2 - 256 = 0 16m2 - 256 = 0 16m2 -256 + 256 = 256 16m2 = 256 16m2/16 = 256/16 m2 = 16 √m2 = √16 m = ±4
There is only one solution: 44 = 256.
0.9846
You need 256 litres.
1 times 256.
64
Half of 256 is 128 - whether to a division problem or any other.
A fraction is essentially a division problem:256/1000= 256 ÷ 1,000 = 0.256
221 256 - 229 = 221 227
4m2-256 = 0 Add 256 to both sides: 4m2 = 256 Divide both sides by 4: m2 = 64 Square root both sides to find the value of m: m = 8 Alternatively, if 4m is to be squared, and not just the m: (4m)2 - 256 = 0 16m2 - 256 = 0 16m2 -256 + 256 = 256 16m2 = 256 16m2/16 = 256/16 m2 = 16 √m2 = √16 m = ±4
There is only one solution: 44 = 256.
0.0312
down 4531 across 256
0.9846
Let x be the amount of the 30% acid solution needed. The total amount of acid in the final solution is 0.62*400L. Since the amount of acid from the 30% solution is 0.3x and from the 80% solution is 0.8(400-x), you can set up and solve an equation to find x. Solving x = 240L, we need 240L of the 30% solution.
You need 256 litres.