Katie is comparing the prices of packages of paper cups. One brand costs c dollars and contains 80 cups per package. Another brand costs d dollars and contains 100 cups per package. Which expression cannot be used to find the difference in the cost of 1 paper cup between the two brands? A. begin mathsize 18px style 100 d minus 80 c end style B. begin mathsize 18px style open parentheses c divided by 80 close parentheses minus open parentheses d divided by 100 close parentheses end style
C. begin mathsize 18px style 1 over 80 c minus 1 over 100 d end style D. begin mathsize 18px style c over 80 minus d over 100 end style

answer: a. 13/44

step-by-step explanation: judging by the information given to us, we are looking for experimental probability. we can see that 13 males have chosen chocolate ice cream. there are 44 ice creams in total (remember that the total is always the denominator). so our answer is 13/44.

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is

sas (side angle side)

aa(angle angle)

sss(side side side)

sas you have to find two sides with an angle in between

aa you find two angles because it will always add up to 180

sss find all sides

step-by-step explanation: