Answer:
2069.
Step-by-step explanation:
Let Devyani's age in 2073= x years and y be her fathers age Then:
y = 7x
- and in 8 years time ( 2081) we have:
y + 8 = 3(x + 8)
y = 3x + 24 - 8
y = 3x + 16. Eliminating y from the 2 equations:
7x = 3x + 16
4x = 16
x = 4.
So in 2073 she was 4 years old
Therefore she was born in 2069.
Answer:
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Step-by-step explanation:
Substitute y = x + 2 into y = 3x - 2
x + 2 = 3x - 2
Solve for x in x + 2 = 3x - 2
x = 2
Substitute x = 2 into y = x + 2
y = 4
Therefore,
<u>x = 2</u>
<u>y = 4</u>
First, we got to know the formula, which is:


represents the side length, while

represents the height.
Let's plug in the values.


Let me know if you have any questions regarding this problem!
Thanks!
-TetraFish
2x16=32. 4x17=68. 32+68=100. so 2 boxes kf the 16 pounds and 4 boxes of the 17 pounds makes an even 100 pounds