Which expression is equivalent to 4 – (2m – 3)?
4 – 2m – 3
4 – 2m + 3
–8m + 3
–8m + 12

(B)

Step-by-step explanation:

The given expression is:

which can be simplified as:

Firstly, open the brackets in order to simplify the given expression, we have

=

=

which is the required simplified expression.

Thus, the simplified expression is equivalent to the option B, Hence option B is correct.

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.

christopher is 272,195 year old

step-by-step explanation: