4 + y = 19
y = 19 - 4
y = 15
$9.75 because one taco is 0.75 and 13 x 0.75 is $9.75
The Neolithic Revolution allowed people to live in permanent settlements.
<u>Explanation:</u>
The Neolithic Revolution is the phase of transition in which many of the human cultures in the world shifted their lifestyle to permanent settlement and agriculture from hunting and gathering.
This era is also named as First Agricultural Revolution or Neolithic Demographic Transition. The agricultural practices led the cultures to develop the knowledge of domestication of animals and they began to observe and experiment with the plants (to learn or know how they grow and develop).
Neolithic period is named as revolution because this period changed the way of life of most of the communities. This first occurred in so-called "Fertile Crescent" or Mesopotamia (modern Iraq).
Answer:
-6 is the answer
Step-by-step explanation:
common sense
13
−
3
+
2
i
Multiply by
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3
−
2
i
−
3
−
2
i
to make the denominator of
13
−
3
+
2
i
real.
13
−
3
+
2
i
−
3
−
2
i
−
3
−
2
i
Combine.
13
(
−
3
−
2
i
)
(
−
3
+
2
i
)
(
−
3
−
2
i
)
Expand
(
−
3
+
2
i
)
(
−
3
−
2
i
)
using the FOIL Method.
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13
(
−
3
−
2
i
)
−
3
⋅
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3
−
3
(
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2
i
)
+
2
i
⋅
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3
+
2
i
(
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2
i
)
Simplify.
Tap for more steps...
13
(
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3
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2
i
)
9
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4
i
2
Simplify each term.
Tap for more steps...
13
(
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3
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2
i
)
9
+
4
Reduce the expression by cancelling the common factors.
Tap for more steps...
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3
−
2
i
