6+3n≤40
Use inverse operations i.e.
4x+2<10
-2 -2
4x<8
4*x/4<8/4
x<2
Answer:
20
Step-by-step explanation:
We have two simultaneous equations.
(1) y = 2x + 50
(2) y = 4.5x
1. Subtract (1) from (2)
0 = 2.5x - 50
2. Add 50 to each side
2.5x = 50
3. Divide each side by 2.5
x = 20
Pilar must sell 20 items to break even.
The equation in option a is not a polynomial.
Answer:
There are 48 marbles in the bag
Step-by-step explanation:
red: blue : total
3 8
there are 18 red
18/3 = 6
Multiply everything by 6
3*6 8*6
18 48
There are 48 marbles in the bag
<em>9:10</em>
<em />
<em>That's nine to ten</em>
<em>-Northstar</em>
