Answer:
middle term = 7x
Step-by-step explanation:
in order to find the middle term, we will expand the bracket on the left hand side and compare the expressions on both sides.
(x + 2) (3x + 1) = 3x² + ___ + 2
let the unknown expression = y
(x + 2) (3x + 1) = 3x² + y + 2
Expanding the bracket on the left hand side by multiplication:
x + 2( 3x + 1) = (x × 3x) + (x × 1) + (2 × 3x) + ( 2 × 1)
= 3x² + x + 6x + 2
= 3x² + 7x + 2
Comparing with the expression on the right hand side:
3x² + 7x + 2 = 3x² + y + 2
∴ y = 7x
middle term = 7x
Answer:
x=44/43
Step-by-step explanation:
Subtract 1 from both sides
Simplify
Divide both sides by the same term
Cancel terms that are in both the numerator and the denominator
Bethany says, Using these exchange rates, £1 is worth 1.17 euros.
<u>Step-by-step explanation</u>
1 euro = 1.07 dollars
£1 = 1.25 dollars
Now ,
⇒ £1 = 1.25 dollars
⇒ £1 = 
⇒ £1 = 
⇒ £1 = 
⇒ £1 = 
⇒ £1 =1.17 euros
Therefore , Bethany says, Using these exchange rates, £1 is worth 1.17 euros.
<span>A) y=-2x+19
B) y=x+7
Multiplying B) by -1
B) -y = -x -7 then adding it to A)
A) y = -2x + 19
3x = 12
x = 4
y = 11
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