Where did mathematics come from

Area of rectangle with diagonal of 5 in but length not given

James bought 5 boxes of cookies and 2 cakes at the store for his party. The cakes cost $4 each and his total bill was $28.50, how much was each box of cookies?

If six orange cost 534 how much one orange cost

Choose the true statement about the graph of x < 4. A) closed circle on 4 and all numbers to the left shaded B) open circle on 4 and all numbers to the right shaded C) open circle on 4 and all numbers to the left shaded

How many four digit numbers can be formed from the numbers 1,3,4,6,8 and if repetition of number is not allowed?

What is 8-p/2 is less than or equal to 4?

Convert 3,200,000 to a scientific notation

Lulu bought 2 blouses for $24 each and 3 pairs of socks for $7 each, tax included. How much change would she receive if she paid with bills totaling $80? Choose exactly two answers that are correct. A. division B. multiplication C. subtraction

2y + 5x - z = 4y + 6x solve for y

I'm not quite sure how to do this question: - 2 (35-5y)