Answer:
9.76
Step-by-step explanation:
area of a rectangle = length * breadth
length = (2x + 3)
breadth = x
given area is 220 sq. inches.
thus,
220 = x * (2x+3)
220 = 2x² +3x
2x² + 3x -220 = 0
x = (-b + √ ( b²-4ac) ) ÷ 2a
x = ( -3 + √ ( 3² - 4*2*220) ) ÷ 2*2
x =9.76
Answer:
12a^3+30a^2
Step-by-step explanation:
6a^2(2a+5)
12a^3+30a^2
0.6 as a fraction would be 6/10
Answer:
110 = points possible
Step-by-step explanation:
The points received equals the points possible times the percent
99 = points possible * 90%
Changing this to decimal form
99 = points possible * .90
Divide each side by .90
99/.90 = points possible *.90/.90
110 = points possible
