What is the sign of 3x y3xy3, x, y when x>0x>0x, is greater than, 0 and y<0y<0y, is less than, 0?
1 answer:
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Answer:
Carrots cost $ 1.75 a pound which is more than potatoes cost.
Step-by-step explanation:
Let,
Carrots cost $ x per pound and potatoes cost $ y per pound.
Buying 2 pounds of carrots and 3 pounds of potatoes will cost her
$
and
Buying 4 pounds of carrots and 4 pounds of potatoes will cost her
$
According to the question,
-----(1)
-----(2)
multiplying (1) by 2 we get,
-----(3)
Deducting (2) from (3) we get,
⇒ ------------------(4)
Putting value of y in (1) we get,
⇒ ------------(5)
A=1/2h(b+c)
times both sides by 2/1
2A=h(b+c)
divide both sides by h
=b+c
minus c from both sides
-c=b
times both sides by 2/1
2A=h(b+c)
divide both sides by h
minus c from both sides