Answer:
$40 / x ; $10 / y
Step-by-step explanation:
1.)
For the question, the number of girls aren't given ;
Assume the number of girls = x
The total amount they agreed to spend between themselves = $40
Amount spent on average :
Total amout to be spent / number of girls
Amount spent on average by each girl = $40 / x
2.)
The cost of ice cream isnt given;
Assume, cost per ice cream $y
Amount to be spent on on ice-cream = $10
Number of ice creams that can be purchased :
Amount to be spent on ice-cream / cost per ice cream
$10 / y
Answer:
the first selection (see below)
Step-by-step explanation:
The average rate of change (m) on the interval [x1, x2] is given by ...
... m = (g(x2) -g(x1))/(x2 -x1)
For g(x) = -x²-4x and (x1, x2) = (6, 8), the expression is the one attached.
Since this is a 45-45-90 triangle, n = 9 and m = x
