X: y= 5: 3 and x+y =56

workout the value of x-y

x - y = 14

Step-by-step explanation:

sum the parts of the ratio, 5 + 3 = 8 parts

Divide 56 by 8 to find the value of one part of the ratio.

56 ÷ 8 = 7 ← value of 1 part of the ratio, thus

x = 5 × 7 = 35

y = 3 × 7 = 21

Thus x - y = 35 - 21 = 14

pls ask

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.