Which of the following terms are like terms? A. 2xy and -6xy
B. x and x2
C. 4x and 3xy
D. 3a and 3x

A. 2xy and -6xy

Step-by-step explanation:

Because the variables are the same so they are like terms

A

Step-by-step explanation:

Like terms have to have the same powers or variables

this is answer of 144 cubic meters

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.