A bag contains yellow marbles and red marbles, 55 in total the number of yellow marbles is 5 less than 2 times the number of red marbles how many yellow

35 marbles

Step-by-step explanation:

5 x 2 x2 = 20

55-20 is 35

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.

6(h+1)/2=a

a=area

step-by-step explanation:

its the same thing as a square or rectangle but after multiplying two sides you need to divide it by two.