Answer:
$900
Step-by-step explanation:
Here we need to find the "unit cost" of the laptops. In this case, divide the $3,600 total by (4 laptops), obtaining:
$3,600
--------------- = $900 per laptop
4 laptops
Given:
The ratio of the cost of a shirt to the cost of a jacket is 2:5.
The jacket cost $240 more than the shirt.
To find:
The cost of the shirt and the cost of the jacket.
Solution:
Let x be the cost of the shirt.
The jacket cost $240 more than the shirt. So, the cost of Jacket is (x+240).
The ratio of the cost of a shirt to the cost of a jacket is 2:5. So,



Subtract 2x from both sides.


Divide both sides by 3.


So, the cost of shirt is $160.
Now, the cost of jacket is:

Therefore, the cost of shirt is $160 and the cost of jacket is $400.
Answer:
3/4, 0.76, 4/5, 0.82
Step-by-step explanation:
Hope this helps <3
Answer:
Answer: x<7.1
Step-by-step explanation:

Answer:
C) They are perpendicular lines.
Step-by-step explanation:
We first need to find the slope of the graph of the lines passing through these points using:

The slope of the line that passes through (−12, 15) and (4, −5) is


The slope of the line going through (−8, −9) and (16, 21) is



The product of the two slopes is

Since

the two lines are perpendicular.