Two of the angles of a triangle are of measures 30 degree and 35 degree each. the triangle is #1 an acute angled triangle. #2 an obtuse angled triangle. #3 a right angled triangle. #4 (cannot be determined because measures of all the three angles are not known)

The third angle = 180 - 30 - 35 = 115 degrees

so its obtuse

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.