Armando read 20 pages of his 200-page book in 4 hours. at this rate, how long will it take him to read the entire book? (5 points)

a: 20 hours
b: 40 hours
c: 4 hours
d: 5 hours

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil