Convert 5 11 to a decimal using long division. a) 0.45 b) 2.1 c) 2.2 d) 2.5

The correct option is A.

Step-by-step explanation:

The given number is

Where 5 is dividend and 11 is divisor.

Since dividend is less than divisor we add a decimal place and the first zero. Notice the decimal point which has appeared on the answer line and by the dividend. It does not appear anywhere else.

Now the dividend is 50. Divide the number by divisor.

Subtract 44 from 50.

Therefore remainder is 6. Place a zero after 6.

Now the new dividend is 60. Divide the number by divisor.

Subtract 55 from 60.

Therefore remainder is 5.

Therefore option A is correct.

answer: kljdcdhjbdlchjad oac apoich a

step-by-step explanation:

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.