Wich number is not a scientific notation

This is not in scientific notation because 42.5 is greater than 10. The correct answer is 4.25 x 106. Correct. This is scientific notation.

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NumberScientific Notation?Explanation

nois not an integer

0.82 x 1014no0.82 is not ≥ 1

10 x 103no10 is not < 10

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.