Answer:
1368
Step-by-step explanation:
First you chang top fractions into decimal add and divide that by 4 which is equal to 0.375 hope it helps.
1. 87.5 you have to multiply
2. Its 35 because you have to multiply
N = {15 +- root of ( 225 + 64) } / 2
= {15 +- root of 289 } / 24
= 15 + 17 } / 2 or { 15 -17 } /2
= 16 or -1
