Use rounding or compatible numbers to estimate the sum 52+39

The sum of 9 + 2 would be 11 and the sum of 50 + 30 would be 80. The total sum is 91.

- If you try to estimate, you first sum 50 + 30 and so you can estimate that the number will be somewhere close to 80.

- Now you can add the 9 form 39 to this number, and you can get even a more precise estimative saying the number will be approximately 89.

- Finally you add two to that number and you get the final correct answer.

Hope it helped,

BioTeacher101

ad = ae + ed = y + 7

similar triangles therefor

ac/ab = ad/ae

6/4 = (y + 7) / y

cross multiply

6y = 4(y + 7)

6y = 4y + 28

2y = 28

y = 14

step-by-step explanation:

answer: 1475

step-by-step explanation:

becuase you have to know what they are asking you