Algebra Answers

A sample of people consists of twice as many females as males. If there are a total of 261 people in the
sample, how many are male?

Every day of the week, Aaron walks to his school which is 6/10 of a kilometre away from his house. On Friday, he is 5/6 of the way to school when he realises that he forgot his Programming textbook at home and turns back to get it. Once Aaron picks up his textbook from home, he walks straight to school. How far will Aaron have walked in total that morning when he reaches the school? Write the answer in km.

Ronna bought some cans of paint and 5/8 of a liter of special paint additive formulated to reduce mildew. Before painting her house, she used all of the additive to put 1/8 of a liter of additive in each can. How many cans of paint did Ronna buy?


Please tell me how to do this

If a=phi, b={1,2}, c={-1,-2}, then a×b×c has 4 elements.
Is the statement true or false? Justify your answer.

If 2x/3-1=11 what does x=?

|x1-x2|= |x1|-|x2| for all x1,x2€R.
Is the statement true or false? Justify your answer.

a>=b implies and is implied by -a<=-b is an absolute inequality.
Is the statement true or false? Justify your answer.

What percentage is 40 of 50 and what percentage is 50 of 40.
What do you notice about your answers and explain your answer.

Calculate 250% of 100 and calculate 100% of 250.
What do you notice about your answers. Explain your answers.

what is 50% of 50%. Write your answer as:
1.A percentage
2.a decimal
3.A common fraction