Answer:
x = days he reads for 4.5 hours = 1 day
y = days he reads for 3.5 hours = 6 days
Step-by-step explanation:
Let
x = days he reads for 4.5 hours
y = days he reads for 3.5 hours
x + y = 7 (1)
4.5x + 3.5y = 25.5 (2)
From (1)
x = 7 - y
Substitute x = 7 - y into (2)
4.5x + 3.5y = 25.5 (2)
4.5(7 - y) + 3.5y = 25.5
31.5 - 4.5y + 3.5y = 25.5
- 4.5y + 3.5y = 25.5 - 31.5
-y = -6
y = 6
Substitute y = 6 into (1)
x + y = 7 (1)
x + 6 = 7
x = 7 - 6
x = 1
x = days he reads for 4.5 hours = 1 day
y = days he reads for 3.5 hours = 6 days
The absolute value of 4/13 is 4/13 because when you put something in absolute value it becomes positive and sense this is already positive it stays. hope this helps :))))
Answer:104
Step-by-step explanation:
Answer:
164 in^2
Step-by-step explanation:
length = 10 in
breadth = 3 in
height = 4 in
surface area = 2(lb + bh + hl)
=2(10*3 + 3*4 + 4*10)
=2(30 + 12 + 40)
=2*82
=164 in.^2
Answer:
6>x<10
Step-by-step explanation:
also put a line under both > <
