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Answer:
17
Step-by-step explanation:
because 19 students for the other in total (you add the ones who study biology and the ones who study both, then you minus the group of students by 19)
Answer:
B
Step-by-step explanation:
The result says y=-x+5 which can be rearrange d to x+y=5
1/9 of the aquarium was filled with 1/7 liter
1 whole fraction of the aquarium will be filled = 1/7 ÷ 1/9
= 1/7 * 9/1 = 9/7
9/7 liters or 1 2/7 liters will be needed.
Answer:
A(-1,3),B(2,-2),C(4,5),D(-2,-5)