Questions138

22.04.2020 • 

Mathematics

J(5,3) and K( 7,3) are the endpoints of a chord of a circle. Which
information is needed to prove that is a diameter of the circle?
O A. (6, 3) is the center of the circle and the midpoint of JK
O
B. (1, 0) is the center of the circle and the midpoint of JK
C. (-1,0) is the center of the circle and the midpoint of
O
D. (-6,3) is the center of the circle and the midpoint of JK.

Ответ:

rsimmons696

27.12.2020

Mathematics

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Let x be the number of apples 
Let y be the number of oranges 

x+y≤20 
0.24x+0.8y≤12

x≤20-y 

0.24(20-y)+0.8y≤12
4.8-0.24y+0.8y≤12
0.56y≤7.2
y=12.9 (you can choose 12 here, since you can't have a fraction of an orange sold) 

x= 7.14 (again, rounding this off to 7) 

Therefore, Darcy got 12 oranges and 7 apples. 

Hope I helped :) 

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