X= 6
5x-10 = 20
5x=20+10
5x=30
x= 6
9 values for each digit, order matters: 123 is different than 321, and no repetion
9*8*7 = 504
Look at a simpler example, with 1, 2, 3:
123
132
213
231
312
321
6 numbers
3*2*1 = 6
So what you have is this:
y = -65x + 1000
this is a form of

,
where

is the slope and

is the y-intercept of the linear relationship.
so, -65 is

and 1000 is the

It should be a piece of cake from there :D
Answer:
136.2
Step-by-step explanation:
Plugin x = 18 in the polynomial.
P(x) = 0.02x³ + 0.04x² + 0.3x + 1.2
P(18)= 0.02*(18)³ + 0.04*(18)² + 0.3*18 + 1.2
= 0.02 * 5832 + 0.04*324 + 5.4 + 1.2
= 116.64 + 12.96 + 5.4 + 1.2
= 136.2
Answer:
<h2>12 computers = 24 students</h2>
Step-by-step explanation:
<h2>3 computers = 6 students</h2><h2>X computers = 24 students</h2><h2>cross multiply</h2><h2>6x = 3 × 24</h2><h2>6x = 72</h2><h2>divide both sides by 6</h2><h2>X = 12</h2>