Answer:
since 2 out of every 5 marbles is blue, 4 tenths of the marbles are blue so 40% is blue. not 50
Answer:
Step-by-step explanation:
Acute angle
This doesn’t make sense
You say 28 did biology, but then 15 did maths and biology, and 16 did physics and biology
15 + 16 is 31 ??
I'm sorry but I'm not into square roots yet :(