Number of months that Lance lived in Portugal: x
Number of months that Lance lived in Brazil: y
<span>Lance lived in Portugal and Brazil for a total of 14 months to learn Portuguese:
</span>(1) x+y=14
<span>He learned an average of 130 words per month when he lived in Portugal:
</span>Number of words that Lance learned in Portugal: 130x
<span>and an average of 150 new words per month when he lived in Brazil:
</span>Number of words that Lance learned in Brazil: 150y
<span>In total, he learned 1920 new words:
(2) 130x+150y=1920
</span><span>Write a system of equations to represent this situation:
(1) x+y=14
(2) 130x+150y=1920</span>
Answer:
-6+6=0
Step-by-step explanation:
mark me as brainlist
Answer:
Step-by-step explanation:
Expression; coefficient, variable; constant; substitute, though I think it should be substitute 7 for x, not 3 for x; and simplify
Product of two polynomials can be done by distribution of multiplication over addition. The product of
is 
<h3>What is distributive property of multiplication over addition?</h3>
Suppose a, b and c are three numbers. Then we have:

(a(b+c) means a multiplied to (b+c). The sign of multiplication is usually hidden when using symbols and both quantities which are in multiplication are written together without space)
The product result of the given expression is obtained as:

Thus,
The product of
is 
Learn more about polynomial product here;
brainly.com/question/9106484
Answer:2 ft
Step-by-step explanation:
Area of circle = pi x r^2 = 4 pi
So r^2 = 4
r =2