-2x+y. You have to distribute 1/2 to -4x and 2y which will get -2x+ y as a expanded version
Answer:
Total yards = 19.685 yards
Total cost = $442.9125
Step-by-step explanation:
Fabrics per dress = 1.5 meters
Number of dresses = 12
Total fabrics needed = 1.5 meters × 12
= 18 meters
Convert 18 meters of fabrics into yards
18 meters = 19.685 yards
Cost of fabric per yard = $22.50
Total cost of fabrics in yards = 19.685 yards × $22.50
= $442.9125
Let the two numbers be x and y.
The difference between the numbers is 4. Therefore
x - y = 4 (1)
The sum of one-half of each number is 18, therefore
x/2 + y/ 2 = 18
x + y = 36 (2)
Add equations (1) and (2).
(x - y) + (x + y) = 4 + 36
2x = 40
x = 20
From (2), obtain
y = 36 - x = 36 - 20 = 16.
Answer: The two numbers are 16 and 20.
Answer:
29.79
Step-by-step explanation:
3 (1-7) = 3*1+3*-7
I really just used the distributive property for this.
