Answer choice A
(5x^2-9x+3)-(-4x^2+3x-5)
Distribute the negative, (4x^2-3x+5)
Group Like terms 5x^2+4x^2=9x^2, -9x-3x=-12x, 3+5=8
9x^2-12x+8
Answer:
Step-by-step explanation:
We want to simplify the algebraic expression:
We can rewrite this as:
We convert to equivalent fractions to get::
We can now add the numerators and keep one of the denominators.
We rewrite as:
The volume of a room = length * width * height
=12z³-27z
And by the analysis:
The volume = 12z³-27z
= ( 3z ) ( 4z²-9 ) ⇒ by taking (3z) common
= ( 3z )( 2z+3 )( 2z-3 ) ⇒ <span>the difference between two squares
So </span><span>the dimensions of the room will be 3z , 2z+3 , 2z-3
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Answer:
The correct option is D) 47.1 mm³
V = πr²
= π × 3² ×
≈ 47.1 (rounded 1 DP)