Answer:
45, 36
Step-by-step explanation:
let x y minutes be the time for pipes to fill the tank, let n be the water needed to fill the tank.
x-y=9
(n/x)*20+(n/y)*20=n
n is removed by dividing the 2nd equation by n
here u get:
(1/x+1/y)*20=1
you sub x=9+y into the above equation
1/y+1/(9+y)=1/20
((9+y)+(y))*20=(9+y)(y)
180+40y=9y+y2
y2-31y-180=0
then use the quadratic formula and u will find y=36 or -5
-5 is rejected because it is negative
x=36+9=45
therefore it is 36 mins and 45 mins
Answer:
6m√5
Step-by-step explanation:
√(12m)·√(15m) = √(180m²) = √(5·(36m²)) = √5·√(6m)²
= 6m√5 . . . . . . for m ≥ 0
Ax^2 = bx Divide by x
ax^2/x = b
ax^(2 -1) = b
ax = b Divide by a
x = b/a
5 <<<< Answer.
x≠0
a≠0
Answer:
Follows are the solution to the given point:
Step-by-step explanation:
please find the correct question:
In choice a:
The smallest square line would be from the production.
Purchases of Cosmetics & Makeup Demo Clips are the factors used in the calculation.
In choice b:
The proportions of its variance of maquillage sales reveal by it's a linear relation to maquillage video tutorials is 
.
In choice c:
Because the vector Cosmetics Demonstration videos are critical with 5.11E-07 p-value, which is less than 0.05 and
. It may assume that increasing making-up purchases is attributed to tutorials for online makeup.
