Will mark brainliest answer correct : )

which statement is true?

a.

–10 + (–9) > 3 + (–25)

b.

–18 + 21 = –15 + 12

c.

13 + (–7) > 21 + (–14)

d.

7 + (–6) < –14 + 12

Solve for n? [tex]z = \frac{3}{4} mn[/tex]

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120

Fill in the missing exponents in each box and show how you found the answer. (4 points: 2 points for each correct answer with work shown) c. (9^4)^? =9^1 d.(5^? )^3=5^1 *question marks represent the boxes