The depth of a river changes by 7/10 foot on friday , 7/8 foot on saturday and -11/15 on sunday. on which day does the river depth decrease the most

Answer is on Sunday the river depth decreases the most.

Step-by-step explanation:

Given that the depth of river changes

It is not given increase or decrease

But by convention, normally if positive sign for change means increase and negative sign means decrease.

Since Friday and Saturday show change by positive values namely 7/10 and 7/8 feet. we can say that change is increase

But On Sunday, the change is negative =-11/15

This implies 11/15 feet decreases

Hence this is the highest of all the three

Answer is on Sunday the river depth decreases the most.

(Because it is the only day where decrease takes place)

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

answer:

a=9

step-by-step explanation: lmk if you need a explanation