Answer:
-1.70588235294
1. X3, 15x - 10y = 80 15x - 7y = 51
-17y = 29
2. 8 = 1/60 + a. 8 - 1/60 = 7.98333333333
6 = 1/80 + b. 6 - 1/80 = 5.9875
13.9708333333
3. I genuinely dont know sorry.
4. Pencil = $0.05. Pen = $1.05
Step-by-step explanation:
By dividing it by a number that = to it
Here, Length = 14 - 4 = 10 units
Width = 10 - 5 = 5 units
Now, P = 2(l + w)
P = 2(10 + 5)
P = 2(15)
P = 30 units
In short, Your Answer would be Option C
Hope this helps!
