Pizza dough doubles in volume every 3 minutes and reaches its maximum size in 30 minutes. how many minutes does it take for the pizza to reach half its maximum volume?
(a) 3
(b) 10
(c) 15
(d) 24
(e) 27

solution: 30/3 = 10 times.

20^10/ 2^1 = 2^9

9 x 3 = 27

why though? can someone explain the steps?

step-by-step explanation:

26 is 33.33% of 78

step-by-step explanation:

26 is what percent of 78?

26 is p% of 78

equation: y = p% * x

solving our equation for p

p% = y/x

p% = 26/78

p = 0.3333

convert decimal to percent:

p% = 0.3333 * 100 = 33.33%

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

step-by-step explanation:

formula

x = x1 + p/w(x2 - x1)

let the line segment ab with a(x1,y1) and b(x2,y2)

a point(x,y) divide ab in the ratio, 2: 3 the x coordinate can be written as

x = x1 + p/w(x2 - x1)

here p=2 and w = 2+3

therefore,

x coordinate can be written by using the formula, x= x1 + 2/5(x2 - x1)

similarly y coordinate y = y1 + 2/5(y2 - y1)

thus, the first answer choice, y = sec x, is the correct one