the principal of a local middle school arranged for 5 buses to take 140 students on a field trip. of the 5 buses, 4 buses were completely full. only 12 students rode on the 5th bus. if b represents the maximum number of students who can ride on each bus, which equation can you use to find the value of b?

a) b+12=140

b)140-12b=4

c)4b+12=140

d)140+4b=12

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.  

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

b is the correct answer