Question

If the two shapes at the right are similar, calculate the value of x

Answer 1

x = 15

Explanation:

Answer 2

So we can see that these are similar shapes. So we can get a ratio for this'

21:51 is our ratio now we just need to compare to our second ratio

2x+3:34. So now we just need to get our multiplier which will be 34/51 because we're getting smaller. So we just need to multiply it by 21

21*34/51 = 14. So now we know that 14 = 2x+3

14 = 2x+3. Do simple algebra and get x = 11/2.

11/2 or 5 1/2 or 5.5 is answer