Answer:the company bought 12 computers and 4 printers.
Step-by-step explanation:
Let x represent the number of computers that the company bought.
Let y represent the number of printers that the company bought.
The company buys a total of 16 machines. It means that
x + y = 16
Each computer costs $550 and each printer costs $390. If the company spends $8160 for all the computers and printers that was bought, it means that
550x + 390y = 8160 - - - - - - - - - - 1
Substituting x = 16 - y into equation 1, it becomes
550(16 - y) + 390y = 8160
8800 - 550y + 390y = 8160
- 550y + 390y = 8160 - 8800
- 160y = - 640
y = - 640/ - 160
y = 4
Substituting y = 4 into x = 16 - y, it becomes
x = 16 - 4
x = 12
Let's rewrite each equation in the Slope-Intercept Form of the Equation of a Line. First, let's start with the main equation:

Then, our options are the following:

For two perpendicular lines it is true that the product of its slopes is:


According to this, only A) B) and D) might be the perpendicular lines we are looking for. Notice that these lines are the same. The other condition is that the line must pass through the point (5, -4). By substituting this point in the equation, we have:

Finally, the right answer are:

Answer:
<h3>1)m+5q=1+5x5 =26</h3><h3>2)(y-x^3)=3-1^3 =3-1 =2</h3><h3>3)q(p+2)=3(3+2) =3(5) =15</h3><h3>4)y+y-x=5+5-6 =10-6 =4</h3><h3>5)(z+y)÷6=6+6÷6 =2</h3><h3>6)h(j-h)=3(6-3) = 3x3=9</h3><h3>7)x+y+y = 5+2+2=9</h3><h3>8)z^2-y =9-4=5</h3><h3>9)b(4+a)=2(4+6) =2x10 =20</h3><h3>10)m-n+m =5-1+5 = 4+5 =9</h3><h3>11)(h+j)÷6 = (2+4)÷6 = 1</h3>
<h3>mark as brainliast plz</h3>
13. 0.0000000228
14. 1 over 15
15. one-third
16. point three repeating
17. 2two and five eighths
18. -0.59
19. 2.25
20.
21. -0.25
22. 0.6
23. 3
24. 4 and 4 over 9