Which expressions are equivelent to 3 1/4 - (-5/8)

Fraction form=31/8 Decimal form=3.875

Step-by-step explanation:

Convert the mixed numbers to improper fractions, then find the Least common denominator and combine  

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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