the answer for the question is b! :)
Answer:10
Step-by-step explanation:
2+4+6+.....+20- (1+3+5+7+...+19)=(2-1)+(4-3)+(6-5)+....+(20-19)=1+1+...+1 ( de 10 ori= 10 times)
=10
Let x be the time she ran and y be the time she walked
then distance ran = 25x and distance walked = 5y
so 15x + 5y = 42
and x + y = 4
* second equn. by -5:-
-5x - 5y = -20
add this to the first equn:0
10x = 22
x = 2.2
distance she ran = 2.2 * 15 = 33 km
Given data:
The given equation is 5x^2= -11x-2.
The given equation can be written as,
Thus, the values of x are x=-1/5, and x= -2.
Mid point elasticity formula
[change in price] / [average price] ÷ [change in quantity] / [average quantity]
change in price = $6 - $4 = $2
average price = [$ 6 +$4] / $2 = 10/ 2 = 5
[change in price] / [average price] = 2/5
change in quantity = 1000 boxes - 600 boxes = 400 boxes
average quantity = [1000 boxes + 600 boxes] / 2 = 1600 boxes / 2 = 800
boxes
change in quantity / average quantity = 400/800 = 1/2
midpoint elasticity = 2/5 ÷ 1/2 = 4/5 = 0.8
0.8 < 1 => inelastic demand (the change is demand is less than proportional to the change in price)
