Paulo has a job printing some certificates on a5, 148 x 210 mm size paper. he then has to post the certificates to the client. paulo does not want to fold the certificates when he posts them. what is the smallest envelope size that paulo can use so that he does not have to fold the certificates when he posts them?
c 3 324 x458, c4 229 x 324, c5 162 x 229, c6 114 x 162

The answer is : C5 162 x 229

Step-by-step explanation:

Paulo has a job printing some certificates on A5, 148 x 210 mm size paper.

Paulo also posts the certificates to the client and does not want to fold the certificates when he posts them.

So, the smallest envelope size that Paulo can use is - A standard C5 envelope measures 162mm x 229mm.

This is designed to fit A5 paper unfolded and A4 paper folded in half. A standard A5 paper size is 148mm x 210mm.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a