Can someone help me with these questions please?

1st one is one solution

2nd one is one solution

Step-by-step explanation:

The first one is infinite solutions and the second one is no solution.

Step-by-step explanation:

If you graphed the first one, the lie on the same line. When you graph and it's on the same line there would be many solutions.

The second one should form parallel lines. When the lines are parallel there is no solution.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.