Before a show, there are 8 people in a theater. five groups of 4 people enter, and then three groups of 2 people leave. evaluate the expression 8+5(4)−3(2) to find how many people are in the theater.

 22

Step-by-step explanation:

Given : Before a show, there are 8 people in a theater. Five groups of 4 people enter, and then three groups of 2 people leave.

The expression to find how many people are in the theater is given as :

Using BODMAS (Bracket , Of , Divide , Multiplication, Add, Subtract), we first open brackets .

Now again using BODMAS , first we solve addition operation, then subtraction.

Hence, the number of people are in the theater= 22

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.  

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.