Let x = smaller number
Let y = bigger number
y = 7x + 4
x + y = 92
x + (7x + 4) = 92
8x + 4 = 92
8x = 88
x = 11
y = 7x + 4
y = 81
Answer:
its 3.6
Step-by-step explanation:
Answer:
6 years
Step-by-step explanation:
Convert feet to inches: 3 feet = 36 inches, 7 feet = 84 inches
Set two equations equal to each other:
First equation, Type A has a slope of 12 (grows 12 inches per year) and a y-intercept of 36 (it starts 36 inches (or 3 feet) tall)
Second equation, Type B has a slope of 4 (grows 4 inches per year) and a y-intercept of 84 (starts at 84 inches (or 7 feet) tall)
12x + 36 = 4x + 84
subtract 36 from both sides
12x = 4x + 48
subtract 4x from both sides
8x = 48
divide by 8 on both sides
x = 6
It will take the tree types 6 years to be the same height
Hope that helps!
Answer:
i believe its 12.55
Step-by-step explanation:
if you add both number, 12.90 and 12.20, then divide by 2.
you'll will gain the same result
