To solve this problem, let us first assign some
variables. Let us say that:
x = pigs
y = chickens
z = ducks
From the problem statement, we can formulate the
following equations:
1. y + z = 30 --->
only chicken and ducks have feathers
2. 4 x + 2 y + 2 z = 120 --->
pig has 4 feet, while chicken and duck has 2 each
3. 2 x + 2 y + 2 z = 90 --->
each animal has 2 eyes only
Rewriting equation 1 in terms of y:
y = 30 – z
Plugging this in equation 2:
4 x + 2 (30 – z) + 2 z = 120
4 x + 60 – 2z + 2z = 120
4 x = 120 – 60
4 x = 60
x = 15
From the given choices, only one choice has 15 pigs. Therefore
the answers are:
She has 15 pigs, 12 chickens, and 18 ducks.
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The answer should be A which is:
<span>
If the measure of an angle is 90, then it is a right angle.
Original: true
Converse: true
</span><span>p is angel is right
</span><span> q is its measure is 90
</span><span>the statement is p then q
so the converse is q then p </span>
Answer:
Step-by-step explanation:
Answer:
ans: The line passes through the point (0,13)
Step-by-step explanation:
(0,13) is Y-intercept
