Brainliest and 20 points! what is the multiplicative inverse of 5 ?

The multiplicative inverse of a number is the reciprocal of the number.

For a whole number this would be making it a fraction with 1 as the numerator.

The  multiplicative inverse of 5 is 1/5

Multiplicative inverse means that the numerator and denominator switch places. Remember that all non fraction numbers can be turned into a fraction by making the denominator 1 like so...

Now you can take the multiplicative inverse of 5/1 to get...

^^^That is equal to 0.2

Hope this helped!

~Just a girl in love with Shawn Mendes

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

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.