250 balls are numbered from 1 to 250 and placed in a box. A ball is picked random. What is a probabilty of picking ball with three- digit number?

150/250 or 3/5 or a 60% chance

Step-by-step explanation:

Why?

because you need to calculate the number of balls that are a three-digit number and they will not be a three-digit number up until you get to 100 so what is 250-100? its 150  so your fraction is  150/250 or 3/5 if you need it simplified. To get a percent you need to divide 150 by 250 to get 0.6 and then you multiply by 100.

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x

5: 20

step-by-step explanation: