HHHELP PLEASE

its 31.5

Step-by-step explanation:

first use the law of cosines to find the largest angle

since 13 is the longest side then angle C is the largest angle

so

so its

then ÷ the equation by -131.6 and find the cos inverse of the angle to get C=76

after that use the law of sines

then u get sinA =0.52

and again use sin inverse

so A= 31.5

it is b)

hope this : )

step-by-step explanation:

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.